1

                                                                  EXHIBIT (A)(1)

                           OFFER TO PURCHASE FOR CASH

                     ALL OUTSTANDING SHARES OF COMMON STOCK
                                       OF
                     WAVE TECHNOLOGIES INTERNATIONAL, INC.
                                       AT

                              $9.75 NET PER SHARE
                                       BY

                          WTI ACQUISITION CORPORATION
                     AN INDIRECT WHOLLY OWNED SUBSIDIARY OF

                            THE THOMSON CORPORATION

         THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT,
  NEW YORK CITY TIME, ON TUESDAY, APRIL 18, 2000, UNLESS THE OFFER IS EXTENDED

    THE OFFER IS BEING MADE PURSUANT TO THE TERMS OF AN AGREEMENT AND PLAN OF
MERGER DATED AS OF MARCH 10, 2000 (THE "MERGER AGREEMENT") AMONG THOMSON US
HOLDINGS, INC. ("PARENT"), WTI ACQUISITION CORPORATION ("PURCHASER") AND WAVE
TECHNOLOGY INTERNATIONAL, INC. (THE "COMPANY").
                            ------------------------

    THE BOARD OF DIRECTORS OF THE COMPANY HAS UNANIMOUSLY DETERMINED THAT THE
MERGER AGREEMENT (AS DEFINED HEREIN) AND THE TRANSACTIONS CONTEMPLATED THEREBY,
INCLUDING EACH OF THE OFFER AND THE MERGER (EACH AS DEFINED HEREIN) ARE FAIR TO,
AND IN THE BEST INTEREST OF, THE HOLDERS OF SHARES, HAS APPROVED, ADOPTED AND
DECLARED ADVISABLE THE MERGER AGREEMENT AND THE TRANSACTIONS CONTEMPLATED
THEREBY INCLUDING EACH OF THE OFFER AND MERGER AND HAS RESOLVED TO RECOMMEND
THAT THE HOLDERS OF SHARES ACCEPT THE OFFER AND TENDER SHARES PURSUANT TO THE
OFFER.
                            ------------------------

    THE OFFER IS CONDITIONED UPON, AMONG OTHER THINGS, (I) THERE HAVING BEEN
VALIDLY TENDERED AND NOT WITHDRAWN PRIOR TO THE EXPIRATION OF THE OFFER AT LEAST
THE NUMBER OF SHARES THAT SHALL CONSTITUTE TWO-THIRDS OF THE THEN OUTSTANDING
SHARES ON A FULLY DILUTED BASIS (INCLUDING, WITHOUT LIMITATION, ALL SHARES
ISSUABLE UPON THE CONVERSION OF ANY CONVERTIBLE SECURITIES OR UPON THE EXERCISE
OF ANY OPTIONS, WARRANTS, OR RIGHTS (OTHER THAN THE RIGHTS ISSUED PURSUANT TO
THE RIGHTS AGREEMENT, DATED AS OF SEPTEMBER 17, 1998 (THE "RIGHTS AGREEMENT")
BETWEEN THE COMPANY AND CHASEMELLON SHAREHOLDER SERVICES, L.L.C., AS RIGHTS
AGENT AND OTHER THAN ANY SHARES ISSUABLE UPON THE EXERCISE OF ANY OPTIONS IN
RESPECT OF WHICH THE PURCHASER HAS RECEIVED AN AGREEMENT FROM THE OPTION HOLDER
NOT TO EXERCISE SUCH OPTION UNTIL AFTER THE RECORD DATE FOR ANY MEETING OF THE
STOCKHOLDERS OF THE COMPANY FOR THE PURPOSE OF CONSIDERING AND TAKING ACTION ON
THE MERGER AGREEMENT, THE OFFER AND THE MERGER) (THE "MINIMUM CONDITION") AND
(II) ANY APPLICABLE WAITING PERIOD UNDER THE HART-SCOTT-RODINO ANTITRUST
IMPROVEMENTS ACT OF 1976, AS AMENDED (THE "HSR ACT"), HAVING EXPIRED OR BEEN
TERMINATED, PRIOR TO THE EXPIRATION OF THE OFFER (THE "HSR CONDITION"). THE
OFFER IS ALSO SUBJECT TO CERTAIN OTHER CONDITIONS CONTAINED IN THIS OFFER TO
PURCHASE. SEE SECTIONS 1 AND 14, WHICH SET FORTH IN FULL THE CONDITIONS TO THE
OFFER.
                            ------------------------

                                   IMPORTANT

    Any stockholder desiring to tender all or any portion of such stockholder's
Shares should either (i) complete and sign the accompanying Letter of
Transmittal (or a manually signed facsimile thereof) in accordance with the
instructions in the Letter of Transmittal and mail or deliver it together with
the certificate(s) evidencing tendered Shares, and any other required documents,
to the Depositary or tender such Shares pursuant to the procedure for book-entry
transfer set forth in Section 3 or (ii) request such stockholder's broker,
dealer, commercial bank, trust company or other nominee to effect the
transaction for such stockholder. Any stockholder whose Shares are registered in
the name of a broker, dealer, commercial bank, trust company or other nominee
must contact such broker, dealer, commercial bank, trust company or other
nominee if such stockholder desires to tender such Shares.

    A stockholder who desires to tender Shares and whose certificates evidencing
such Shares are not immediately available, or who cannot comply with the
procedure for book-entry transfer on a timely basis, may tender such Shares by
following the procedure for guaranteed delivery set forth in Section 3.

    Questions or requests for assistance may be directed to the Information
Agent at its address and telephone number set forth on the back cover of this
Offer to Purchase. Additional copies of this Offer to Purchase, the Letter of
Transmittal and the Notice of Guaranteed Delivery may also be obtained from the
Information Agent or from brokers, dealers, commercial banks or trust companies.
                            ------------------------

                                 March 22, 2000
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                               TABLE OF CONTENTS



                                                                     PAGE
                                                                     ----
                                                               
SUMMARY OF THE OFFER...............................................    I
  INTRODUCTION.....................................................    1
  1.   Terms of the Offer; Expiration Date.........................    3
  2.   Acceptance for Payment and Payment for Shares...............    4
  3.   Procedures for Accepting the Offer and Tendering Shares.....    6
  4.   Withdrawal Rights...........................................    8
  5.   Certain Federal Income Tax Consequences.....................    9
  6.   Price Range of Shares; Dividends............................   10
  7.   Certain Information Concerning the Company..................   10
  8.   Certain Information Concerning Purchaser and Thomson........   12
  9.   Financing of the Offer and the Merger.......................   13
 10.   Background of the Offer; Contacts with the Company; the
       Merger Agreement; Interests of Certain Persons in the
       Merger......................................................   13
 11.   Purpose of the Offer; Plans for the Company After the Offer
       and the Merger..............................................   24
 12.   Dividends and Distributions.................................   26
 13.   Possible Effects of the Offer on the Market for Shares,
       Nasdaq Listing, Margin Regulations and Exchange Act
       Registration................................................   27
 14.   Certain Conditions of the Offer.............................   28
 15.   Certain Legal Matters and Regulatory Approvals..............   29
 16.   Fees and Expenses...........................................   31
 17.   Miscellaneous...............................................   31



                                                                          
SCHEDULES
  Schedule I.     Directors and Executive Officers of Thomson and Purchaser...    I-1
  Schedule II.    Additional Information Pursuant to Section 14(f) of the        II-1
                    Securities Exchange Act of 1934 and Rule 14f-1
                    Thereunder................................................
  Schedule III.   Missouri General and Business Corporation Law Section         III-1
                    351.455 Dissenter's Rights................................
  Schedule IV.    Schedule of Transactions in Shares During the Past 60          IV-1
                    Days......................................................

   3

                              SUMMARY OF THE OFFER

     This summary of the offer highlights selected information from this offer
to purchase, and may not contain all of the information that is important to
you. To better understand our offer to stockholders of Wave Technologies
International, Inc. and for a complete description of the legal terms of the
offer, you should read this entire offer to purchase carefully, as well as those
additional documents to which we have referred you. Questions or requests for
assistance may be directed to the Information Agent at its address and telephone
number on the last page of this offer to purchase.

PRINCIPAL TERMS OF OFFER:    - The Thomson Corporation ("Thomson"), through its
                               wholly owned subsidiary WTI Acquisition
                               Corporation ("WTI") is offering to purchase all
                               the shares of common stock, par value $0.50 per
                               share, of Wave Technologies International, Inc.
                               ("Wave") that are issued and outstanding, for
                               $9.75 per share. Tendering stockholders will not
                               have to pay brokerage fees or commissions.

                             - The offer is the first step in Thomson's plan to
                               acquire all the shares of Wave common stock that
                               are issued and outstanding. If the offer is
                               successful, Thomson will acquire any remaining
                               shares of Wave common stock as promptly as
                               practicable thereafter in a merger for $9.75 per
                               share, in cash. No appraisal rights are available
                               in connection with the offer; however,
                               stockholders may have appraisal rights in
                               connection with the merger. For a more detailed
                               discussion of appraisal rights, see Section 11.

                             - Unless WTI extends the offer, the offer will
                               expire at 12:00 midnight, New York City time, on
                               Tuesday, April 18, 2000.

                             - If WTI decides to extend the offer, WTI will
                               issue a press release giving the new expiration
                               date no later than 9:00 a.m., New York City time,
                               on the next business day after the previously
                               scheduled expiration date.

WAVE BOARD RECOMMENDATION:   - The Board of Directors of Wave has unanimously
                               determined that the merger agreement and the
                               transactions contemplated thereby, including each
                               of the offer and merger, are fair to, and in the
                               best interests of, the stockholders of Wave; has
                               approved, adopted and declared advisable the
                               merger agreement and the transactions
                               contemplated thereby, including each of the offer
                               and merger, and has resolved to recommend that
                               stockholders accept the offer and tender their
                               shares pursuant to the offer.

CONDITIONS TO THE OFFER:     - WTI is not required to complete the offer,
                               unless:

                                  - at least two-thirds of the then outstanding
                                    shares of Wave common stock are validly
                                    tendered and not withdrawn prior to the
                                    expiration of the offer; and

                                  - any applicable waiting period under the HSR
                                    Act has expired or been terminated prior to
                                    the expiration of the offer.

                             - See Sections 1 and 14 which set forth in full all
                               the conditions to the offer.

FINANCING OF THE OFFER AND
  MERGER:                    - WTI will obtain all necessary funds to purchase
                               the shares of Wave common stock from Thomson or
                               its affiliates. Thomson and its affiliates will
                               provide such funds from existing resources. For a
                               more

                                        I
   4

                               detailed description of the financing of the
                               offer and the merger, see Section 9.

EXTENSION OF OFFER:          - WTI may, without the consent of Wave, extend the
                               period of the offer as follows:

                                  - if any of the conditions to WTI's obligation
                                    to accept for payment shares of Wave common
                                    stock are not satisfied or waived on or
                                    prior to the scheduled expiration of the
                                    offer;

                                  - if any rule, regulation or interpretation of
                                    the SEC or its staff requires the offer to
                                    be extended;

                                  - on one or more occasions, for an aggregate
                                    period of not more than 10 business days
                                    beyond the latest applicable date that the
                                    offer may be extended, if, as of such date,
                                    all of the conditions to WTI's obligation to
                                    accept for payment the shares of Wave common
                                    stock are satisfied or waived, but the
                                    number of shares of Wave common stock
                                    validly tendered and not withdrawn pursuant
                                    to the offer equals 80% or more, but less
                                    than 90% of the outstanding shares of Wave
                                    common stock on a fully diluted basis; or

                                  - if, on the initial scheduled expiration date
                                    of the offer, the sole condition remaining
                                    unsatisfied is the failure of the waiting
                                    period under the HSR Act to have expired or
                                    been terminated, in which case, WTI may
                                    extend the offer from time to time until the
                                    earlier to occur of (i) June 30, 2000 and
                                    (ii) the fifth business day after the
                                    expiration or termination of the applicable
                                    waiting period under the HSR Act.

                             - During any such extension of the offer, all
                               shares of Wave common stock previously tendered
                               and not withdrawn will remain subject to the
                               offer and subject to your right to withdraw any
                               tendered shares of Wave common stock. See Section
                               4.

PROCEDURE FOR TENDERING
SHARES OF COMMON STOCK:      - In order for you to validly tender shares of Wave
                               common stock pursuant to the offer, you must
                               deliver the following documents to the Depositary
                               at one of its addresses listed on the back cover
                               of this offer to purchase, prior to the
                               expiration of the offer:

                                  - a letter of transmittal (or a manually
                                    signed facsimile thereof), properly
                                    completed and duly executed (and any other
                                    documents required by the letter of
                                    transmittal) and share certificates
                                    evidencing tendered shares of Wave common
                                    stock;

                                  - in the case of a book-entry transfer, an
                                    agent's message (and any other documents
                                    required by the letter of transmittal) and a
                                    book-entry confirmation (including an
                                    agent's message if you have not delivered a
                                    letter of transmittal); or

                                  - if your share certificates are not
                                    immediately available or you cannot deliver
                                    your share certificates and all other
                                    required documents to the Depositary prior
                                    to the expiration of the offer, or you
                                    cannot complete the procedure for delivery
                                    by book-entry transfer on a timely basis,
                                    you may still tender your shares of

                                       II
   5

Wave common stock if you comply with the guaranteed delivery procedures
described in Section 3 of this offer to purchase.

                             - For a detailed description of the procedures for
                               tendering shares of Wave common stock, see
                               Section 3.

WITHDRAWAL RIGHTS:           - You may withdraw any tender of shares of Wave
                               common stock at any time prior to the expiration
                               of the offer, and, unless WTI has previously
                               accepted them pursuant to the offer, you may also
                               withdraw any tender of shares of Wave common
                               stock at any time after May 20, 2000. See Section
                               4.

WITHDRAWAL PROCEDURE:        - If, after tendering shares of Wave common stock
                               in the offer, you decide to withdraw such
                               tendered shares, you may withdraw the tendered
                               shares by providing timely notice of such
                               withdrawal to the depositary. If you tendered
                               shares of Wave common stock by giving
                               instructions to a broker or bank, you must
                               instruct the broker or bank to arrange for the
                               withdrawal of the shares of Wave common stock.
                               For further details, see Section 4.

MARKET VALUE OF SHARES:      - On March 9, 2000, the last full trading day
                               before WTI announced its offer to purchase all
                               the shares of Wave common stock that are issued
                               and outstanding, the last reported closing price
                               per share of Wave common stock was $7.375. Before
                               deciding whether to tender, you should obtain a
                               current market quotation for the shares of Wave
                               common stock.

ADDITIONAL INFORMATION:      - Any questions or requests for additional
                               information or assistance may be directed to the
                               Information Agent at its address and telephone
                               number on the last page of this offer to
                               purchase.

                                       III
   6

To the Holders of Common Stock of
Wave Technologies International, Inc.:

                                  INTRODUCTION

     WTI Acquisition Corporation, a Delaware corporation ("Purchaser") and an
indirect wholly owned subsidiary of The Thomson Corporation, a corporation
organized under the laws of Ontario, Canada ("Thomson"), hereby offers to
purchase all the shares of common stock, par value $0.50 per share ("Shares"),
of Wave Technologies International, Inc., a Missouri corporation (the
"Company"), that are issued and outstanding for $9.75 per Share, net to the
seller in cash, without interest, upon the terms and subject to the conditions
set forth in this Offer to Purchase and in the related Letter of Transmittal
(which, together with this Offer to Purchase and any amendments or supplements
hereto or thereto, collectively constitute the "Offer"). See Section 8 for
additional information concerning Thomson and Purchaser.

     Tendering stockholders will not be obligated to pay brokerage fees or
commissions or, except as otherwise provided in Instruction 6 of the Letter of
Transmittal, stock transfer taxes with respect to the purchase of Shares by
Purchaser pursuant to the Offer. However, any tendering stockholder or other
payee who fails to complete and sign the Substitute Form W-9 that is included in
the Letter of Transmittal may be subject to a required back-up U.S. federal
income tax withholding of 31% of the gross proceeds payable to such stockholder
or other payee pursuant to the Offer. See Section 5. Purchaser or Thomson will
pay all charges and expenses of ChaseMellon Shareholder Services, L.L.C. (the
"Depositary") and Innisfree M&A Incorporated (the "Information Agent") incurred
in connection with the Offer. See Section 16.

     THE BOARD OF DIRECTORS OF THE COMPANY (THE "BOARD") HAS UNANIMOUSLY
DETERMINED THAT THE MERGER AGREEMENT (AS DEFINED BELOW) AND THE TRANSACTIONS
CONTEMPLATED THEREBY, INCLUDING EACH OF THE OFFER AND THE MERGER (EACH AS
DEFINED HEREIN) ARE FAIR TO, AND IN THE BEST INTEREST OF, THE HOLDERS OF SHARES,
HAS APPROVED, ADOPTED AND DECLARED ADVISABLE THE MERGER AGREEMENT AND THE
TRANSACTIONS CONTEMPLATED THEREBY, INCLUDING EACH OF THE OFFER AND MERGER, AND
HAS RESOLVED TO RECOMMEND THAT HOLDERS OF SHARES ACCEPT THE OFFER AND TENDER
SHARES PURSUANT TO THE OFFER.

     U.S. Bancorp Piper Jaffray Inc. has delivered to the Board its opinion to
the effect that the cash consideration to be paid for the Company common stock
in the Offer and the Merger is fair to the holders of Shares from a financial
point of view as of March 10, 2000. A copy of the written opinion of U.S.
Bancorp Piper Jaffray is contained in the Company's Solicitation/Recommendation
Statement on Schedule 14D-9 (the "Schedule 14D-9"), which has been filed with
the Securities and Exchange Commission (the "Commission") in connection with the
Offer and which is being mailed to stockholders concurrently herewith, and
stockholders are urged to read such opinion carefully in its entirety for a
description of the assumptions made, matters considered and limitations of the
review undertaken by U.S. Bancorp Piper Jaffray.

     THE OFFER IS CONDITIONED UPON, AMONG OTHER THINGS, (I) THERE HAVING BEEN
VALIDLY TENDERED AND NOT WITHDRAWN PRIOR TO THE EXPIRATION OF THE OFFER AT LEAST
THE NUMBER OF SHARES THAT SHALL CONSTITUTE TWO-THIRDS OF THE THEN OUTSTANDING
SHARES ON A FULLY DILUTED BASIS (INCLUDING, WITHOUT LIMITATION, ALL SHARES
ISSUABLE UPON THE CONVERSION OF ANY CONVERTIBLE SECURITIES OR UPON THE EXERCISE
OF ANY OPTIONS, WARRANTS, OR RIGHTS (OTHER THAN THE RIGHTS ISSUED PURSUANT TO
THE RIGHTS AGREEMENT, DATED AS OF SEPTEMBER 17, 1998 (THE "RIGHTS AGREEMENT")
BETWEEN THE COMPANY AND CHASEMELLON SHAREHOLDER SERVICES, L.L.C., AS RIGHTS
AGENT AND OTHER THAN ANY SHARES ISSUABLE UPON THE EXERCISE OF ANY OPTIONS IN
RESPECT OF WHICH THE PURCHASER HAS RECEIVED AN AGREEMENT FROM THE OPTION HOLDER
NOT TO EXERCISE SUCH OPTION UNTIL AFTER THE RECORD DATE FOR ANY MEETING OF THE
STOCKHOLDERS OF THE COMPANY FOR THE PURPOSE OF CONSIDERING AND TAKING ACTION ON
THE MERGER AGREEMENT, THE OFFER AND THE MERGER) (THE "MINIMUM
                                        1
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CONDITION") AND (II) ANY APPLICABLE WAITING PERIOD UNDER THE HART-SCOTT-RODINO
ANTITRUST IMPROVEMENTS ACT OF 1976, AS AMENDED (THE "HSR ACT"), HAVING EXPIRED
OR BEEN TERMINATED, PRIOR TO THE EXPIRATION OF THE OFFER (THE "HSR CONDITION").
THE OFFER IS ALSO SUBJECT TO CERTAIN OTHER CONDITIONS CONTAINED IN THIS OFFER TO
PURCHASE. SEE SECTIONS 1 AND 14, WHICH SET FORTH IN FULL THE CONDITIONS TO THE
OFFER.

     The Offer is being made pursuant to an Agreement and Plan of Merger, dated
as of March 10, 2000 (the "Merger Agreement"), among Thomson US Holdings Inc., a
Delaware corporation and a wholly owned subsidiary of Thomson ("Parent"),
Purchaser and the Company. The Merger Agreement provides, among other things,
that as promptly as practicable after the purchase of Shares pursuant to the
Offer and the satisfaction or, if permissible, waiver of the other conditions
set forth in the Merger Agreement and in accordance with the relevant provisions
of the General Corporation Law of the State of Delaware ("Delaware Law") and the
Missouri General and Business Corporation Law ("Missouri Law"), Purchaser will
be merged with and into the Company (the "Merger"). As a result of the Merger,
the Company will continue as the surviving corporation (the "Surviving
Corporation") and will become an indirect wholly owned subsidiary of Thomson. At
the effective time of the Merger (the "Effective Time"), each Share issued and
outstanding immediately prior to the Effective Time (other than Shares held in
the treasury of the Company and other than Shares held by stockholders who shall
have demanded and perfected appraisal rights under Missouri Law) shall be
canceled and converted automatically into the right to receive $9.75 in cash, or
any higher price that may be paid per Share in the Offer, without interest (the
"Merger Consideration"). Stockholders who demand and fully perfect appraisal
rights under Missouri Law will be entitled to receive, in connection with the
Merger, cash for the fair value of their Shares as determined pursuant to the
procedures prescribed by Missouri Law. See Section 11. The Merger Agreement is
more fully described in Section 10. Certain federal income tax consequences of
the sale of Shares pursuant to the Offer and the Merger, as the case may be, are
described in Section 5.

     The Merger Agreement provides that, promptly upon the purchase by Purchaser
of Shares pursuant to the Offer and from time to time thereafter, Purchaser
shall be entitled to designate up to such number of directors, rounded up to the
next whole number, on the Board as will give Purchaser representation on the
Board equal to the product of the total number of directors on the Board (giving
effect to the directors elected pursuant to this section) multiplied by the
percentage that the aggregate number of Shares then beneficially owned by
Purchaser or any affiliate of Purchaser following such purchase bears to the
total number of Shares then outstanding. In the Merger Agreement, the Company
has agreed, at such time, promptly to take all actions necessary to cause
Purchaser's designees to be elected as directors of the Company, including
increasing the size of the Board or securing the resignations of incumbent
directors, or both.

     The consummation of the Merger is subject to the satisfaction or waiver of
certain conditions, including the consummation of the Offer, and, if necessary,
the approval and adoption of the Merger Agreement and the Merger by the
requisite vote of the stockholders of the Company. For a more detailed
description of the conditions to the Merger, see Section 10. Under the Company's
Articles of Incorporation and Missouri Law, the affirmative vote of the holders
of at least two-thirds of the outstanding Shares is required to approve and
adopt the Merger Agreement and the Merger. Consequently, if Purchaser acquires
(pursuant to the Offeror otherwise) at least two-thirds of the outstanding
Shares, then Purchaser will have sufficient voting power to approve and adopt
the Merger Agreement and the Merger without the vote of any other stockholder.
SEE SECTIONS 10 AND 11.

     Under Missouri Law, if Purchaser acquires, pursuant to the Offer or
otherwise, at least 90% of the then outstanding Shares, Purchaser will be able
to approve and adopt the Merger Agreement and the Merger without a vote of the
Company's stockholders. In such event, Parent, Purchaser and the Company have
agreed to take, at the request of Purchaser, all necessary and appropriate
action to cause the Merger to become effective in accordance with Missouri Law
as promptly as reasonably practicable after such acquisition, without a meeting
of the Company's stockholders. If, however, Purchaser does not acquire at least
90% of the then outstanding Shares pursuant to the Offer or otherwise and a vote
of the Company's stockholders is

                                        2
   8

required under Missouri Law, a significantly longer period of time will be
required to effect the Merger. See Section 11.

     The Company has advised Purchaser that as of March 10, 2000, 4,265,845
Shares were issued and outstanding, and 596,392 Shares were reserved for
issuance pursuant to outstanding employee stock options and no Shares were held
in the treasury of the Company. As a result, as of such date, the Minimum
Condition would be satisfied if Purchaser acquired 3,241,492 Shares. Also, as of
such date, Purchaser could cause the Merger to become effective in accordance
with Missouri Law, without a meeting of the Company's stockholders, if Purchaser
acquired 3,839,261 Shares, plus 90% of all Shares issued upon exercise of
employee stock options prior to the Merger becoming effective.

     No appraisal rights are available in connection with the Offer; however,
stockholders may have appraisal rights in connection with the Merger regardless
of whether the Merger is consummated with or without a vote of the Company's
stockholders. See Section 11.

     THIS OFFER TO PURCHASE AND THE RELATED LETTER OF TRANSMITTAL CONTAIN
IMPORTANT INFORMATION WHICH SHOULD BE READ BEFORE ANY DECISION IS MADE WITH
RESPECT TO THE OFFER.

1.  TERMS OF THE OFFER; EXPIRATION DATE.

     Upon the terms and subject to the conditions of the Offer (including, if
the Offer is extended or amended, the terms and conditions of such extension or
amendment), Purchaser will accept for payment and pay for all Shares validly
tendered (and not withdrawn in accordance with the procedures set forth in
Section 4) on or prior to the Expiration Date. "Expiration Date" means 12:00
midnight, New York City time, on Tuesday, April 18, 2000, unless and until
Purchaser (subject to the terms and conditions of the Merger Agreement) shall
have extended the period during which the Offer is open, in which case
Expiration Date shall mean the latest time and date at which the Offer, as may
be extended by Purchaser, shall expire.

     The Offer is subject to the conditions set forth under Section 14,
including the satisfaction of the Minimum Condition and the HSR Condition.
Subject to the applicable rules and regulations of the Commission and subject to
the terms and conditions of the Merger Agreement, Purchaser expressly reserves
the right to waive any such condition in whole or in part, in its sole
discretion. Subject to the applicable rules and regulations of the Commission
and subject to the terms and conditions of the Merger Agreement, Purchaser also
expressly reserves the right to increase the price per Share payable in the
Offer and to make any other changes in the terms and conditions of the Offer;
provided, however, that the Purchaser may not decrease the price per Share
payable in the Offer, reduce the maximum number of Shares to be purchased in the
Offer or impose conditions to the Offer in addition to those set forth in
Section 14.

     The Merger Agreement provides that Purchaser may, without the consent of
the Company, (i) extend the Offer beyond the scheduled expiration date, which
shall be 20 business days following the commencement of the Offer, if, at the
scheduled expiration of the Offer, any of the conditions to Purchaser's
obligation to accept for payment Shares, shall not be satisfied or waived, (ii)
extend the Offer for any period required by any rule, regulation or
interpretation of the Commission, or the staff thereof, applicable to the Offer,
or (iii) on one or more occasions, extend the Offer for an aggregate period of
not more than 10 business days beyond the latest applicable date that would
otherwise be permitted under clause (i) or (ii) of this sentence, if, as of such
date, all of the conditions to Purchaser's obligations to accept Shares for
payment are satisfied or waived, but the number of Shares validly tendered and
not withdrawn pursuant to the Offer equals 80% or more, but less than 90% of
outstanding Shares on a fully diluted basis. The Merger Agreement also provides
that, if, on the initial scheduled expiration date of the Offer, the sole
condition remaining unsatisfied is the failure of the waiting period under the
HSR Act to have expired or been terminated, then Purchaser shall extend the
Offer from time to time until the earlier to occur of (i) June 30, 2000 and (ii)
the fifth business day after the expiration or termination of the applicable
waiting period under the HSR Act. During any such extension, all Shares
previously tendered and not withdrawn will remain subject to the Offer and
subject to the right of a tendering stockholder to withdraw such stockholder's
Shares. See Section 4. Under no circumstances will

                                        3
   9

interest be paid on the purchase price for tendered Shares, whether or not the
Offer is extended. Any extension of the Offer may be effected by Purchaser
giving oral or written notice of such extension to the Depositary.

     Purchaser shall pay for all Shares validly tendered and not withdrawn
promptly following the acceptance of Shares for payment pursuant to the Offer.
Notwithstanding the immediately preceding sentence and subject to the applicable
rules of the Commission and the terms and conditions of the Offer, Purchaser
also expressly reserves the right (i) to delay payment for Shares in order to
comply in whole or in part with applicable laws (any such delay shall be
effected in compliance with Rule 14e-1(c) under the Securities Exchange Act of
1934, as amended (the "Exchange Act"), which requires Purchaser to pay the
consideration offered or to return Shares deposited by or on behalf of
stockholders promptly after the termination or withdrawal of the Offer), (ii) to
extend or terminate the Offer and not to accept for payment or pay for any
Shares not theretofore accepted for payment or paid for, upon the occurrence of
any of the conditions to the Offer specified in Section 14, and (iii) to amend
the Offer or to waive any conditions to the Offer in any respect consistent with
the provisions of the Merger Agreement described above, in each case by giving
oral or written notice of such delay, termination, waiver or amendment to the
Depositary and by making public announcement thereof.

     Any such extension, delay, termination, waiver or amendment will be
followed as promptly as practicable by public announcement thereof, such
announcement in the case of an extension to be made no later than 9:00 a.m., New
York City time, on the next business day after the previously scheduled
Expiration Date. Subject to applicable law (including Rules 14d-4(c), 14d-6(d)
and 14e-1 under the Exchange Act, which require that material changes be
promptly disseminated to stockholders in a manner reasonably designed to inform
them of such changes) and without limiting the manner in which Purchaser may
choose to make any public announcement, Purchaser will have no obligation to
publish, advertise or otherwise communicate any such public announcement other
than by issuing a press release to the Dow Jones News Service or the Public
Relations Newswire.

     If Purchaser makes a material change in the terms of the Offer or the
information concerning the Offer, or if it waives a material condition of the
Offer, Purchaser will extend the Offer to the extent required by Rules l4d-4(c),
l4d-6(d) and 14e-1 under the Exchange Act. Subject to the terms of the Merger
Agreement, if, prior to the Expiration Date, Purchaser should decide to increase
the consideration being offered in the Offer, such increase in the consideration
being offered will be applicable to all stockholders whose Shares are accepted
for payment pursuant to the Offer and, if at the time notice of any such
increase in the consideration being offered is first published, sent or given to
holders of such Shares, the Offer is scheduled to expire at any time earlier
than the period ending on the tenth business day from and including the date
that such notice is first so published, sent or given, the Offer will be
extended at least until the expiration of such ten business day period.

     For purposes of the Offer, a "business day" means any day on which the
principal offices of the Commission in Washington, D.C. are open to accept
filings, or, in the case of determining a date when any payment is due, any day
on which banks are not required or authorized to close in The City of New York,
and consists of the time period from 12:01 a.m. through 12:00 midnight, New York
City time.

     The Company has provided Purchaser with the Company's stockholder list and
security position listings, including the most recent list of names, addresses
and security positions of non-objecting beneficial owners in the possession of
the Company, for the purpose of disseminating the Offer to holders of Shares.
This Offer to Purchase and the related Letter of Transmittal will be mailed by
Purchaser to record holders of Shares whose names appear on the Company's
stockholder list and will be furnished, for subsequent transmittal to beneficial
owners of Shares, to brokers, dealers, commercial banks, trust companies and
similar persons whose names, or the names of whose nominees, appear on the
stockholder list or, if applicable, who are listed as participants in a clearing
agency's security position listing.

2.  ACCEPTANCE FOR PAYMENT AND PAYMENT FOR SHARES.

     Upon the terms and subject to the conditions of the Offer (including, if
the Offer is extended or amended, the terms and conditions of any such extension
or amendment), Purchaser will accept for payment all Shares
                                        4
   10

validly tendered (and not properly withdrawn in accordance with Section 4) prior
to the Expiration Date promptly after the occurrence of the Expiration Date.
Purchaser shall pay for all Shares validly tendered and not withdrawn promptly
following the acceptance of Shares for payment pursuant to the Offer.
Notwithstanding the immediately preceding sentence and subject to applicable
rules and regulations of the Commission and the terms of the Merger Agreement,
Purchaser expressly reserves the right to delay payment for Shares in order to
comply in whole or in part with applicable laws. See Sections 1 and 15.

     In all cases, payment for Shares tendered and accepted for payment pursuant
to the Offer will be made only after timely receipt by the Depositary of (i) the
certificates evidencing such Shares (the "Share Certificates") or timely
confirmation (a "Book-Entry Confirmation") of a book-entry transfer of such
Shares into the Depositary's account at The Depository Trust Company (the
"Book-Entry Transfer Facility") pursuant to the procedures set forth in Section
3, (ii) the Letter of Transmittal (or a manually signed facsimile thereof),
properly completed and duly executed, with any required signature guarantees or
an Agent's Message (as defined below), in connection with the book-entry
transfer and (iii) any other documents required under the Letter of Transmittal.
The term "Agent's Message" means a message, transmitted by the Book-Entry
Transfer Facility to, and received by, the Depositary and forming a part of the
Book-Entry Confirmation which states that the Book-Entry Transfer Facility has
received an express acknowledgment from the participant in the Book-Entry
Transfer Facility tendering the Shares that are the subject of such Book-Entry
Confirmation, that such participant has received and agrees to be bound by the
Letter of Transmittal and that Purchaser may enforce such agreement against such
participant.

     On March 20, 2000, Thomson filed with the Federal Trade Commission (the
"FTC") and the Antitrust Division of the Department of Justice (the "Antitrust
Division") a Premerger Notification and Report Form under the HSR Act with
respect to the Offer. Accordingly, it is anticipated that the waiting period
under the HSR Act applicable to the Offer will expire at 11:59 p.m., New York
City time, on April 4, 2000. Prior to the expiration or termination of such
waiting period, the FTC or the Antitrust Division may extend such waiting period
by requesting additional information from Thomson with respect to the Offer. If
such a request is made, the waiting period will expire at 11:59 p.m., New York
City time, on the tenth calendar day after substantial compliance with such a
request. Thereafter, the waiting period may only be extended by court order. The
waiting period under the HSR Act may be terminated prior to expiration by the
FTC and the Antitrust Division. Thomson has requested early termination of the
waiting period, although there can be no assurance that this request will be
granted. See Section 15 for additional information regarding the HSR Act.

     For purposes of the Offer, Purchaser will be deemed to have accepted for
payment (and thereby purchased) Shares validly tendered and not properly
withdrawn as, if and when Purchaser gives oral or written notice to the
Depositary of Purchaser's acceptance for payment of such Shares pursuant to the
Offer. Upon the terms and subject to the conditions of the Offer, payment for
Shares accepted for payment pursuant to the Offer will be made by deposit of the
purchase price therefor with the Depositary, which will act as agent for
tendering stockholders for the purpose of receiving payments from Purchaser and
transmitting such payments to tendering stockholders whose Shares have been
accepted for payment. UNDER NO CIRCUMSTANCES WILL INTEREST ON THE PURCHASE PRICE
FOR SHARES BE PAID, REGARDLESS OF ANY DELAY IN MAKING SUCH PAYMENT.

     If any tendered Shares are not accepted for payment for any reason pursuant
to the terms and conditions of the Offer, or if Share Certificates are submitted
evidencing more Shares than are tendered, Share Certificates evidencing
unpurchased Shares will be returned, without expense to the tendering
stockholder (or, in the case of Shares tendered by book-entry transfer into the
Depositary's account at a Book-Entry Transfer Facility pursuant to the procedure
set forth in Section 3, such Shares will be credited to an account maintained at
such Book-Entry Transfer Facility), as promptly as practicable following the
expiration or termination of the Offer.

     Purchaser reserves the right to transfer or assign, in whole or from time
to time in part, to one or more of its affiliates, the right to purchase all or
any portion of the Shares tendered pursuant to the Offer, but any such transfer
or assignment will not relieve Purchaser of its obligations under the Offer and
will in no way prejudice

                                        5
   11

the rights of tendering stockholders to receive payment for Shares validly
tendered and accepted for payment pursuant to the Offer.

3.  PROCEDURES FOR ACCEPTING THE OFFER AND TENDERING SHARES.

     In order for a holder of Shares validly to tender Shares pursuant to the
Offer, the Letter of Transmittal (or a manually signed facsimile thereof),
properly completed and duly executed, together with any required signature
guarantees or, in the case of a book-entry transfer, an Agent's Message, and any
other documents required by the Letter of Transmittal, must be received by the
Depositary at one of its addresses set forth on the back cover of this Offer to
Purchase and either (i) the Share Certificates evidencing tendered Shares must
be received by the Depositary at such address or such Shares must be tendered
pursuant to the procedure for book-entry transfer described below and a
Book-Entry Confirmation must be received by the Depositary (including an Agent's
Message if the tendering stockholder has not delivered a Letter of Transmittal),
in each case prior to the Expiration Date, or (ii) the tendering stockholder
must comply with the guaranteed delivery procedures described below.

     THE METHOD OF DELIVERY OF SHARE CERTIFICATES AND ALL OTHER REQUIRED
DOCUMENTS, INCLUDING DELIVERY THROUGH THE BOOK-ENTRY TRANSFER FACILITY, IS AT
THE OPTION AND RISK OF THE TENDERING STOCKHOLDER, AND THE DELIVERY WILL BE
DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE DEPOSITARY. IF DELIVERY IS BY
MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, PROPERLY INSURED, IS
RECOMMENDED. IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY
DELIVERY.

     Book-Entry Transfer.  The Depositary will establish accounts with respect
to the Shares at the Book-Entry Transfer Facility for purposes of the Offer
within two business days after the date of this Offer to Purchase. Any financial
institution that is a participant in the system of the Book-Entry Transfer
Facility may make a book-entry delivery of Shares by causing the Book-Entry
Transfer Facility to transfer such Shares into the Depositary's account at the
Book-Entry Transfer Facility in accordance with the Book-Entry Transfer
Facility's procedures for such transfer. However, although delivery of Shares
may be effected through book-entry transfer at the Book-Entry Transfer Facility,
the Letter of Transmittal (or a manually signed facsimile thereof), properly
completed and duly executed, together with any required signature guarantees, or
an Agent's Message, and any other required documents, must, in any case, be
received by the Depositary at one of its addresses set forth on the back cover
of this Offer to Purchase prior to the Expiration Date, or the tendering
stockholder must comply with the guaranteed delivery procedure described below.
DELIVERY OF DOCUMENTS TO THE BOOK-ENTRY TRANSFER FACILITY DOES NOT CONSTITUTE
DELIVERY TO THE DEPOSITARY.

     Signature Guarantees.  Signatures on all Letters of Transmittal must be
guaranteed by a firm which is a member of the Security Transfer Agent Medallion
Signature Program, or by any other "eligible guarantor institution," as such
term is defined in Rule 17Ad-15 under the Exchange Act (each of the foregoing
being referred to as an "Eligible Institution"), except in cases where Shares
are tendered (i) by a registered holder of Shares who has not completed either
the box entitled "Special Payment Instructions" or the box entitled "Special
Delivery Instructions" on the Letter of Transmittal or (ii) for the account of
an Eligible Institution. If a Share Certificate is registered in the name of a
person other than the signer of the Letter of Transmittal, or if payment is to
be made, or a Share Certificate not accepted for payment or not tendered is to
be returned, to a person other than the registered holder(s), then the Share
Certificate must be endorsed or accompanied by appropriate stock powers, in
either case signed exactly as the name(s) of the registered holder(s) appear on
the Share Certificate, with the signature(s) on such Share Certificate or stock
powers guaranteed by an Eligible Institution. See Instructions 1 and 5 of the
Letter of Transmittal.

     Guaranteed Delivery.  If a stockholder desires to tender Shares pursuant to
the Offer and such stockholder's Share Certificates evidencing such Shares are
not immediately available or such stockholder cannot deliver the Share
Certificates and all other required documents to the Depositary prior to the

                                        6
   12

Expiration Date, or such stockholder cannot complete the procedure for delivery
by book-entry transfer on a timely basis, such Shares may nevertheless be
tendered, provided that all the following conditions are satisfied:

          (i) such tender is made by or through an Eligible Institution;

          (ii) a properly completed and duly executed Notice of Guaranteed
     Delivery, substantially in the form made available by Purchaser, is
     received prior to the Expiration Date by the Depositary as provided below;
     and

          (iii) the Share Certificates (or a Book-Entry Confirmation) evidencing
     all tendered Shares, in proper form for transfer, in each case together
     with the Letter of Transmittal (or a manually signed facsimile thereof),
     properly completed and duly executed, with any required signature
     guarantees or, in the case of a book-entry transfer, an Agent's Message,
     and any other documents required by the Letter of Transmittal are received
     by the Depositary within three Nasdaq National Market ("Nasdaq") trading
     days after the date of execution of such Notice of Guaranteed Delivery.

     The Notice of Guaranteed Delivery may be delivered by hand or mail or by
facsimile transmission to the Depositary and must include a guarantee by an
Eligible Institution in the form set forth in the form of Notice of Guaranteed
Delivery made available by Purchaser.

     In all cases, payment for Shares tendered and accepted for payment pursuant
to the Offer will be made only after timely receipt by the Depositary of the
Share Certificates evidencing such Shares, or a Book-Entry Confirmation of the
delivery of such Shares, and the Letter of Transmittal (or a manually signed
facsimile thereof), properly completed and duly executed, with any required
signature guarantees or, in the case of a book-entry transfer, an Agent's
Message, and any other documents required by the Letter of Transmittal.

     Determination of Validity.  ALL QUESTIONS AS TO THE FORM OF DOCUMENTS AND
THE VALIDITY, FORM, ELIGIBILITY (INCLUDING TIME OF RECEIPT) AND ACCEPTANCE FOR
PAYMENT OF ANY TENDER OF SHARES WILL BE DETERMINED BY PURCHASER, IN ITS SOLE
DISCRETION, WHICH DETERMINATION SHALL BE FINAL AND BINDING ON ALL PARTIES.
Purchaser reserves the absolute right to reject any and all tenders determined
by it not to be in proper form or the acceptance for payment of which may, in
the opinion of its counsel, be unlawful. Purchaser also reserves the absolute
right to waive any condition of the Offer to the extent permitted by applicable
law and the Merger Agreement or any defect or irregularity in the tender of any
Shares of any particular stockholder, whether or not similar defects or
irregularities are waived in the case of other stockholders. NO TENDER OF SHARES
WILL BE DEEMED TO HAVE BEEN VALIDLY MADE UNTIL ALL DEFECTS AND IRREGULARITIES
HAVE BEEN CURED OR WAIVED. NONE OF PURCHASER, THOMSON OR ANY OF THEIR RESPECTIVE
AFFILIATES OR ASSIGNS, THE DEPOSITARY, THE INFORMATION AGENT OR ANY OTHER PERSON
WILL BE UNDER ANY DUTY TO GIVE NOTIFICATION OF ANY DEFECTS OR IRREGULARITIES IN
TENDERS OR INCUR ANY LIABILITY FOR FAILURE TO GIVE ANY SUCH NOTIFICATION.
Purchaser's interpretation of the terms and conditions of the Offer (including
the Letter of Transmittal and the instructions thereto) will be final and
binding.

     A tender of Shares pursuant to any of the procedures described above will
constitute the tendering stockholder's acceptance of the terms and conditions of
the Offer, as well as the tendering stockholder's representation and warranty to
Purchaser that (i) such stockholder has the full power and authority to tender,
sell, assign and transfer the tendered Shares (and any and all other Shares or
other securities issued or issuable in respect of such Shares), and (ii) when
the same are accepted for payment by Purchaser, Purchaser will acquire good and
unencumbered title thereto, free and clear of all liens, restrictions, charges
and encumbrances and not subject to any adverse claims.

     The acceptance for payment by Purchaser of Shares pursuant to any of the
procedures described above will constitute a binding agreement between the
tendering stockholder and Purchaser upon the terms and subject to the conditions
of the Offer.

     Appointment as Proxy.  By executing the Letter of Transmittal as set forth
above, a tendering stockholder irrevocably appoints designees of Purchaser as
such stockholder's agents, attorneys-in-fact and proxies, each with full power
of substitution, in the manner set forth in the Letter of Transmittal, to the
full extent of such stockholder's rights with respect to the Shares tendered by
such stockholder and accepted for payment by Purchaser (and with respect to any
and all other Shares or other securities issued or issuable in

                                        7
   13

respect of such Shares on or after March 10, 2000). All such powers of attorney
and proxies shall be considered irrevocable and coupled with an interest in the
tendered Shares. Such appointment will be effective when, and only to the extent
that, Purchaser accepts such Shares for payment. Upon such acceptance for
payment, all prior powers of attorney and proxies given by such stockholder with
respect to such Shares (and such other Shares and securities) will be revoked,
without further action, and no subsequent powers of attorney or proxies may be
given nor any subsequent written consent executed by such stockholder (and, if
given or executed, will not be deemed to be effective) with respect thereto. The
designees of Purchaser will, with respect to the Shares for which the
appointment is effective, be empowered to exercise all voting and other rights
of such stockholder as they in their sole discretion may deem proper at any
annual or special meeting of the Company's stockholders or any adjournment or
postponement thereof, by written consent in lieu of any such meeting or
otherwise. Purchaser reserves the right to require that, in order for Shares to
be deemed validly tendered, immediately upon Purchaser's payment for such
Shares, Purchaser must be able to exercise full voting rights with respect to
such Shares (and such other Shares and securities).

     UNDER THE "BACKUP WITHHOLDING" PROVISIONS OF U.S. FEDERAL INCOME TAX LAW,
THE DEPOSITARY MAY BE REQUIRED TO WITHHOLD 31% OF ANY PAYMENTS OF CASH PURSUANT
TO THE OFFER. TO PREVENT BACKUP FEDERAL INCOME TAX WITHHOLDING WITH RESPECT TO
PAYMENT TO CERTAIN STOCKHOLDERS OF THE PURCHASE PRICE OF SHARES PURCHASED
PURSUANT TO THE OFFER, EACH SUCH STOCKHOLDER MUST PROVIDE THE DEPOSITARY WITH
SUCH STOCKHOLDER'S CORRECT TAXPAYER IDENTIFICATION NUMBER AND CERTIFY THAT SUCH
STOCKHOLDER IS NOT SUBJECT TO BACKUP FEDERAL INCOME TAX WITHHOLDING BY
COMPLETING THE SUBSTITUTE FORM W-9 IN THE LETTER OF TRANSMITTAL. SEE INSTRUCTION
10 OF THE LETTER OF TRANSMITTAL.

4.  WITHDRAWAL RIGHTS.

     Tender of Shares made pursuant to the Offer are irrevocable except that
such Shares may be withdrawn at any time prior to the Expiration Date and,
unless theretofore accepted for payment by Purchaser pursuant to the Offer, may
also be withdrawn at any time after May 20, 2000. If Purchaser extends the
Offer, is delayed in its acceptance for payment of Shares or is unable to accept
Shares for payment pursuant to the Offer for any reason, then, without prejudice
to Purchaser's rights under the Offer, the Depositary may, nevertheless, on
behalf of Purchaser, retain tendered Shares, and such Shares may not be
withdrawn except to the extent that tendering stockholders are entitled to
withdrawal rights as described in this Section 4, subject to Rule 14e-1(c) under
the Exchange Act. Any such delay will be by an extension of the Offer to the
extent required by law.

     For a withdrawal to be effective, a written or facsimile transmission
notice of withdrawal must be timely received by the Depositary at one of its
addresses set forth on the back cover page of this Offer to Purchase. Any such
notice of withdrawal must specify the name of the person who tendered the Shares
to be withdrawn, the number of Shares to be withdrawn and the name of the
registered holder of such Shares, if different from that of the person who
tendered such Shares. If Share Certificates evidencing Shares to be withdrawn
have been delivered or otherwise identified to the Depositary, then, prior to
the physical release of such Share Certificates, the serial numbers shown on
such Share Certificates must be submitted to the Depositary and the signature(s)
on the notice of withdrawal must be guaranteed by an Eligible Institution,
unless such Shares have been tendered for the account of an Eligible
Institution. If Shares have been tendered pursuant to the procedure for
book-entry transfer as set forth in Section 3, any notice of withdrawal must
specify the name and number of the account at the Book-Entry Transfer Facility
to be credited with the withdrawn Shares.

     ALL QUESTIONS AS TO THE FORM AND VALIDITY (INCLUDING TIME OF RECEIPT) OF
ANY NOTICE OF WITHDRAWAL WILL BE DETERMINED BY PURCHASER, IN ITS SOLE
DISCRETION, WHOSE DETERMINATION WILL BE FINAL AND BINDING. NONE OF PURCHASER,
THOMSON OR ANY OF THEIR RESPECTIVE AFFILIATES OR ASSIGNS, THE DEPOSITARY, THE
INFORMATION AGENT OR ANY OTHER PERSON WILL BE UNDER ANY DUTY TO GIVE ANY
NOTIFICATION OF ANY DEFECTS OR IRREGULARITIES IN ANY NOTICE OF WITHDRAWAL OR
INCUR ANY LIABILITY FOR FAILURE TO GIVE ANY SUCH NOTIFICATION.

     Withdrawals of Shares may not be rescinded. Any Shares properly withdrawn
will thereafter be deemed not to have been validly tendered for purposes of the
Offer. However, withdrawn Shares may be re-tendered at any time prior to the
Expiration Date by following one of the procedures described in Section 3.

                                        8
   14

5.  CERTAIN FEDERAL INCOME TAX CONSEQUENCES.

     The following is a summary of the principal federal income tax consequences
of the Offer and the Merger to holders whose Shares are purchased pursuant to
the Offer or whose Shares are converted into the right to receive cash in the
Merger (whether upon receipt of the Merger Consideration or pursuant to the
proper exercise of dissenter's rights). The discussion applies only to holders
of Shares in whose hands Shares are capital assets, and may not apply to Shares
received pursuant to the exercise of employee stock options or otherwise as
compensation, or to holders of Shares who are not citizens or residents of the
United States of America.

     THE TAX DISCUSSION SET FORTH BELOW IS INCLUDED FOR GENERAL INFORMATION
PURPOSES ONLY AND IS BASED UPON PRESENT LAW. BECAUSE INDIVIDUAL CIRCUMSTANCES
MAY DIFFER, EACH HOLDER OF SHARES SHOULD CONSULT SUCH HOLDER'S OWN TAX ADVISOR
TO DETERMINE THE APPLICABILITY OF THE RULES DISCUSSED TO SUCH STOCKHOLDER AND
THE PARTICULAR TAX EFFECTS OF THE OFFER AND THE MERGER, INCLUDING THE
APPLICATION AND EFFECT OF STATE, LOCAL AND OTHER TAX LAWS.

     The receipt of the offer price and the receipt of cash pursuant to the
Merger (whether as Merger Consideration or pursuant to the proper exercise of
dissenter's rights) will be a taxable transaction for federal income tax
purposes (and also may be a taxable transaction under applicable state, local
and other income tax laws). In general, for federal income tax purposes, a
holder of Shares will recognize gain or loss equal to the difference between
such holder's adjusted tax basis in the Shares sold pursuant to the Offer or
converted to cash in the Merger and the amount of cash received therefor. Gain
or loss must be determined separately for each block of Shares (i.e., Shares
acquired at the same cost in a single transaction) sold pursuant to the Offer or
converted to cash in the Merger. Such gain or loss will be capital gain or loss.
Individual holders will be subject to tax on the net amount of such gain at a
maximum rate of 20% provided that the Shares were held for more than 12 months.
Special rules (and generally lower maximum rates) apply to individuals in lower
tax brackets. The deduction of capital losses is subject to certain limitations.
Stockholders should consult their own tax advisors in this regard.

     Payments in connection with the Offer or the Merger may be subject to
backup withholding at a 31% rate. Backup withholding generally applies if a
stockholder (i) fails to furnish such stockholder's social security number or
taxpayer identification number ("TIN"), (ii) furnishes an incorrect TIN, (iii)
fails properly to report interest or dividends or (iv) under certain
circumstances, fails to provide a certified statement, signed under penalties of
perjury, that the TIN provided is such stockholder's correct number and that
such stockholder is not subject to backup withholding. Backup withholding is not
an additional tax but merely an advance payment, which may be refunded to the
extent it results in an overpayment of tax. Certain persons, including
corporations and financial institutions generally, are exempt from backup
withholding. Certain penalties apply for failure to furnish correct information
and for failure to include the reportable payments in income. Each stockholder
should consult with such stockholder's own tax advisor as to such stockholder's
qualifications for exemption from withholding and the procedure for obtaining
such exemption.

                                        9
   15

6.  PRICE RANGE OF SHARES; DIVIDENDS.

     The Shares are listed and principally traded on Nasdaq. The following table
sets forth, for the quarters indicated, the high and low sales prices per Share
on Nasdaq as reported by the Dow Jones News Service and the amount of cash
dividends paid per Share according to published financial sources.

                               SHARES MARKET DATA



                                                              HIGH          LOW       DIVIDENDS
                                                            ---------    ---------    ---------
                                                                             
1998:
  First Quarter...........................................  $ 8.12500    $ 5.87500      None
  Second Quarter..........................................    6.87500      3.68750      None
  Third Quarter...........................................    5.81250      2.56250      None
  Fourth Quarter..........................................    5.12500      2.56250      None
1999:
  First Quarter...........................................  $ 5.50000    $ 3.62500      None
  Second Quarter..........................................    5.96875      2.87500      None
  Third Quarter...........................................    5.25000      2.56250      None
  Fourth Quarter..........................................   12.50000      2.75000      None
2000:
  First Quarter (through March 9, 2000)...................  $ 9.50000    $3.375000      None


     On March 9, 2000, the last full trading day prior to the announcement of
the execution of the Merger Agreement and of Purchaser's intention to commence
the Offer, the closing price per Share as reported on Nasdaq was $7.375. On
March 21, 2000, the last full trading day prior to the commencement of the
Offer, the closing price per Share as reported on Nasdaq was $9.375. As of March
21, 2000, the approximate number of holders of record of the Shares was 250.

     STOCKHOLDERS ARE URGED TO OBTAIN A CURRENT MARKET QUOTATION FOR THE SHARES.

7.  CERTAIN INFORMATION CONCERNING THE COMPANY.

     Except as otherwise set forth in this Offer to Purchase, all of the
information concerning the Company contained in this Offer to Purchase,
including financial information, has been furnished by the Company or has been
taken from or based upon publicly available documents and records on file with
the Commission and other public sources. Neither Purchaser nor Thomson assumes
any responsibility for the accuracy or completeness of the information
concerning the Company furnished by the Company or contained in such documents
and records or for any failure by the Company to disclose events which may have
occurred or may affect the significance or accuracy of any such information but
which are unknown to Purchaser or Thomson.

     General.  The Company is a Missouri corporation with its principal
executive offices located at 10845 Olive Boulevard, Suite 250, St. Louis,
Missouri, and its telephone number is (314) 995-5767. The Company was
incorporated in Missouri in 1988. In June 1994 the Company made its initial
public offering of common stock, which trades on Nasdaq under the symbol "WAVT".
The Company designs, develops and delivers integrated training solutions
addressing technical certification, including computer programming, networking
and operating systems certifications. The Company delivers its certification
training by integrating Internet-based assessment, self-study materials,
Internet mentoring and intervention and live instructor led training, either
in-person or over the Internet. The Company produces and distributes course
books, self-study guides, training videos, CD-ROM and computer-based training
materials.

     Certain Projected Financial Data of the Company.  Prior to entering into
the Merger Agreement, Thomson conducted a due diligence review of the Company
and in connection with such review received certain projections of the Company's
future operating performance. The Company does not in the ordinary course
publicly disclose projections and these projections were not prepared with a
view to public disclosure.

                                       10
   16

The Company has advised Thomson and Purchaser that these projections were
prepared by the Company's management based on numerous assumptions including,
among others, projections of revenues, operating income, benefits and other
expenses, depreciation and amortization, capital expenditure and working capital
requirements. No assurances can be given with respect to any such assumptions.
These projections do not give effect to the Offer or the potential combined
operations of Thomson and the Company or any alterations Thomson may make to the
Company's operations or strategy after the consummation of the Offer. The
information set forth below is presented for the limited purpose of giving the
stockholders access to the material financial projections prepared by the
Company's management that were made available to Thomson and Purchaser in
connection with the Merger Agreement and the Offer.

                     WAVE TECHNOLOGIES INTERNATIONAL, INC.
                                INCOME STATEMENT
                                  FORECAST(*)



                    DESCRIPTION                       FY 2000   FY 2001   FY 2002   FY 2003   FY 2004
                    -----------                       -------   -------   -------   -------   -------
                                                                               
Total Revenue.......................................  39,150    47,700    60,102    78,133    101,572
Total Costs and Expenses............................  37,846    44,800    54,200    67,700     84,800
Operating Income....................................   1,304     2,900     5,902    10,433     16,772
Net Income after Taxes..............................     741     1,785     3,652     6,395     10,228


(*) All amounts in thousands.

     Certain matters discussed herein, including, but not limited to these
projections, are forward-looking statements that involve risks and
uncertainties. Forward-looking statements include the information set forth
above under "Certain Projected Financial Data of the Company". While presented
with numerical specificity, these projections were not prepared by the Company
in the ordinary course and are based upon a variety of estimates and
hypothetical assumptions which may not be accurate, may not be realized, and are
also inherently subject to significant business, economic and competitive
uncertainties and contingencies, all of which are difficult to predict, and most
of which are beyond the control of the Company. Accordingly, there can be no
assurance that any of the Projections will be realized and the actual results
for the years ending April 30, 2000, 2001, 2002, 2003 and 2004 may vary
materially from those shown above.

     In addition, these projections were not prepared in accordance with
generally accepted accounting principles, and neither the Company's nor
Thomson's independent accountants has examined or compiled any of these
projections or expressed any conclusion or provided any other form of assurance
with respect to these projections and accordingly assume no responsibility for
these projections. These projections were prepared with a limited degree of
precision, and were not prepared with a view to public disclosure or compliance
with the published guidelines of the Commission or the guidelines established by
the American Institute of Certified Public Accountants regarding projections,
which would require a more complete presentation of data than as shown above.
The inclusion of these projections herein should not be regarded as a
representation by Thomson and Purchaser or any other person that the projected
results will be achieved. These projections should be read in conjunction with
the historical financial information of the Company. None of Thomson, Purchaser,
or any other person assumes any responsibility for the accuracy or validity of
the foregoing projections. Forward-looking statements also include those
preceded by, followed by or that include the words "believes", "expects",
"anticipates" or similar expressions.

     Available Information.  The Company is subject to the informational filing
requirements of the Exchange Act and, in accordance therewith, is required to
file periodic reports, proxy statements and other information with the
Commission relating to its business, financial condition and other matters.
Information as of particular dates concerning the Company's directors and
officers, their remuneration, stock options granted to them, the principal
holders of the Company's securities and any material interest of such persons in
transactions with the Company is required to be disclosed in proxy statements
distributed to the Company's stockholders and filed with the Commission. Such
reports, proxy statements and other information should be available for
inspection at the public reference facilities maintained by the Commission at
Judiciary Plaza,

                                       11
   17

450 Fifth Street, N.W., Washington, D.C. 20549, and also should be available for
inspection at the Commission's regional offices located at Seven World Trade
Center, 13th Floor, New York, New York 10048 and the Northwestern Atrium Center,
500 West Madison Street, Suite 1400, Chicago, Illinois 60661-2511. Copies of
such materials may also be obtained by mail, upon payment of the Commission's
customary fees, by writing to its principal office at Judiciary Plaza, 450 Fifth
Street, N.W., Washington, D.C. 20549. The Commission also maintains a World Wide
Website on the Internet at http://www.sec.gov that contains reports and other
information regarding issuers that file electronically with the Commission.

8.  CERTAIN INFORMATION CONCERNING PURCHASER AND THOMSON.

     General.  Purchaser is a newly incorporated Delaware corporation organized
in connection with the Offer and the Merger and has not carried on any
activities other than in connection with the Offer and the Merger. The principal
offices of Purchaser are located at Metro Center, One Station Place, Stamford,
Connecticut, and its telephone number is (203) 969-8700. Purchaser is an
indirect wholly owned subsidiary of Thomson.

     Until immediately prior to the time that Purchaser will purchase Shares
pursuant to the Offer, it is not anticipated that Purchaser will have any
significant assets or liabilities or engage in activities other than those
incident to its formation and capitalization and the transactions contemplated
by the Offer and the Merger. Because Purchaser is newly formed and has minimal
assets and capitalization, no meaningful financial information regarding
Purchaser is available.

     Thomson is a corporation organized under the laws of Ontario, Canada. Its
principal offices are located at Suite 2706, P.O. Box 24, 66 Wellington Street
West, Toronto, Ontario, M5K 1A1, Canada. The principal activity of Thomson is
specialized information and publishing (IP) worldwide. In addition, Thomson has
important interests in newspaper publishing in North America and in leisure and
travel in the United Kingdom and in Sweden. Thomson is currently comprised of
four business groups: Thomson Corporation Publishing International (TCPI) and
Thomson Financial & Professional Publishing Group (TFPPG), Thomson's two IP
business groups, and Thomson Newspapers (TN) and Thomson Travel Group (TTG). The
common stock of Thomson is listed for trading on the Toronto Stock Exchange,
Montreal Stock Exchange and London Stock Exchange.

     The name, citizenship, business address, business telephone number,
principal occupation or employment, and five-year employment history for each of
the directors and executive officers of Purchaser and Thomson and certain other
information are set forth in Schedule I hereto. Except as described in this
Offer to Purchase and in Schedule I hereto, none of Thomson, Purchaser or, to
the best knowledge of such corporations, any of the persons listed on Schedule I
to the Offer of Purchase has during the last five years (i) been convicted in a
criminal proceeding (excluding traffic violations or similar misdemeanors) or
(ii) been a party to any judicial or administrative proceeding (except for
matters that were dismissed without sanction or settlement) that resulted in a
judgment, decree or final order enjoining the person from future violations of,
or prohibiting activities subject to, federal or state securities laws or
finding any violation of such laws.

     Except as described in this Offer to Purchase, (i) none of Purchaser,
Thomson nor, to the best knowledge of Purchaser and Thomson, any of the persons
listed in Schedule I to this Offer to Purchase or any associate or majority
owned subsidiary of Purchaser, Thomson or any of the persons so listed,
beneficially owns or has any right to acquire any Shares and (ii) none of
Purchaser, Thomson nor, to the best knowledge of Purchaser and Thomson, any of
the persons or entities referred to above nor any director, executive officer or
subsidiary of any of the foregoing has effected any transaction in the Shares
during the past 60 days.

     Except as provided in the Merger Agreement and as otherwise described in
this Offer to Purchase, none of Purchaser, Thomson nor, to the best knowledge of
Purchaser and Thomson, any of the persons listed in Schedule I to this Offer to
Purchase, has any agreement, arrangement, understanding, whether or not legally
enforceable, with any other person with respect to any securities of the
Company, including, but not limited to, the transfer or voting of such
securities, joint ventures, loan or option arrangements, puts or calls,
guaranties of loans, guaranties against loss or the giving or withholding of
proxies, consents or authorizations. Except as set forth in this Offer to
Purchase, since May 1, 1997, neither Purchaser nor Thomson nor, to the best
knowledge
                                       12
   18

of Purchaser and Thomson, any of the persons listed on Schedule I hereto, has
had any transaction with the Company or any of its executive officers, directors
or affiliates that is required to be reported under the rules and regulations of
the Commission applicable to the Offer. Except as set forth in this Offer to
Purchase, since May 1, 1997, there have been no negotiations, transactions or
material contacts between any of Purchaser, Thomson, or any of their respective
subsidiaries or, to the best knowledge of Purchaser and Thomson, any of the
persons listed in Schedule I to this Offer to Purchase, on the one hand, and the
Company or its affiliates, on the other hand, concerning a merger, consolidation
or acquisition, tender offer for or other acquisition of any class of the
Company's securities, an election of the Company's directors or a sale or other
transfer of a material amount of assets of the Company.

9.  FINANCING OF THE OFFER AND THE MERGER.

     The total amount of funds required by Purchaser to consummate the Offer and
the Merger and to pay related fees and expenses is estimated to be approximately
$45,000,000. Purchaser will obtain all of such funds from Thomson or its
affiliates. Thomson and its affiliates will provide such funds from existing
resources.

10.  BACKGROUND OF THE OFFER; CONTACTS WITH THE COMPANY; THE MERGER AGREEMENT;
     INTERESTS OF CERTAIN PERSONS IN THE MERGER.

BACKGROUND OF THE MERGER AND THE OFFER

     During the fourth quarter of 1998 and at various times during 1999,
executives of Thomson Learning, a division of Thomson ("Thomson Learning") met
with executives of Wave to discuss ways that the two companies could work
together to pursue common business interests. In connection with these
discussions, on January 13, 1999, Course Technologies, a division of Thomson
Learning, and Wave entered into a Confidentiality Agreement and Wave provided
Thomson with information on Wave's product lines and business strategies. The
Confidentiality Agreement was subsequently amended on January 22, 1999. On
several occasions during the Spring of 1999, as part of these discussions,
executives of Thomson Learning expressed to executives of Wave, Thomson's
interest in a possible acquisition of Wave.

     On September 29, 1999, Eric Shuman, Senior Vice President and Chief
Financial Officer of Thomson Learning, and Tim McEwen and Susan Yules, the Chief
Executive Officer and Chief Financial Officer, respectively, of the Life Long
Learning Group of Thomson Learning, and representatives of Scott-Macon, Ltd.,
Thomson's financial adviser, met with Kenneth W. Kousky, the President and Chief
Executive Officer of Wave and a representative of U.S. Bancorp Piper Jaffray,
Wave's financial adviser, in St. Louis, Missouri to again discuss ways in which
the two companies could work together, including the possible acquisition of
Wave by Thomson. On November 30, 1999, Messrs. Shuman and McEwen called Mr.
Kousky and Mr. Shuman suggested the possible acquisition of Wave by Thomson. On
December 1, 1999, Messrs. Shuman and McEwen met with Mr. Kousky, to discuss
further a possible acquisition and a range of values for Wave. Messrs. Shuman,
McEwen and Kousky had several additional discussions by telephone in December
1999 and January 2000 regarding a possible acquisition, but were unable to reach
agreement on a value for the Company.

                                       13
   19

     On February 4, 2000, David Shaffer, the Executive Vice President and Chief
Operating Officer of Thomson, sent the following letter to Mr. Kousky:

                            [LETTERHEAD OF THOMSON]

                                  CONFIDENTIAL

February 4, 2000
Mr. Kenneth W. Kousky
Chairman and CEO
Wave Technologies International, Inc.
10845 Olive Boulevard, Suite 250
St. Louis, Missouri 63141

Dear Ken:

     As you know from our conversations throughout 1999, Thomson has been very
interested in acquiring the business of Wave Technologies International, Inc.
While we are disappointed that our discussions have thus far not borne fruit, we
would like to discuss with you our proposal, described in more detail below, to
acquire the Wave Technologies International, Inc. business.

     Based upon the information we have reviewed, we are prepared to offer $9
per share to acquire all of the outstanding common stock of Wave Technologies
International, Inc. We would encourage senior management of Wave Technologies
International, Inc. to remain with the company, and believe that we could offer
very competitive compensation, benefits and rewards, and an attractive work
environment for key employees. Although we have reviewed certain information
pertaining to Wave Technologies International, Inc., we would need to conduct
confirmatory due diligence in order to confirm our valuation of the business. We
believe that we can complete all such work expeditiously.

     As you know, Thomson is extremely interested in building a premier
corporate IT training and testing business. Our recently announced acquisition
of Prometric underscores our commitment to this area. We believe the addition of
Wave Technologies International, Inc. will afford us and you the opportunity to
take advantage of the growth in this market.

     Our proposal is subject to our completing satisfactory confirmatory due
diligence, negotiating appropriate definitive agreements and obtaining approval
from Thomson's Board of Directors. Our proposal is not subject to financing. For
the avoidance of doubt, this letter shall not be construed as a binding offer.

     This letter is provided to you on a strictly confidential basis. Neither
Thomson's interest in Wave Technologies International, Inc. nor the contents of
this letter may be disclosed to any other person other than your professional
advisors without our prior written consent. In particular, we will withdraw our
proposal immediately in the event that such confidentiality is breached.

     In order to move forward toward reaching a definitive agreement, which we
believe could be reached during the next several weeks, we would require an
exclusive negotiating period through March 1, 2000, during which time Wave
Technologies International, Inc. would not initiate or proceed with discussions
with any third party or consider any other acquisition proposal. During that
time we would be prepared to negotiate all aspects of the proposal set forth in
this letter.

     We believe that Wave Technologies International, Inc. would complement our
existing business interests and that our offer is in the best interests of your
shareholders. We are firmly committed to moving forward quickly to reach a
mutually acceptable agreement. We would be happy to meet with you in St. Louis
or another mutually convenient location to amplify our proposal. In any event,
we would appreciate a response by 5:00 p.m., on February 14, 2000.

                                       14
   20

     If you have any questions or if you would like to meet to discuss our
proposal, please contact me at (203) 969-8782, or Eric Shuman, CFO of Thomson
Learning, at (203) 425-2559.

                                          Very truly yours,

                                          /s/ DAVID SHAFFER
                                          --------------------------------------
                                          David H. Shaffer

cc: Eric Shuman

     Between February 4 and February 14, 2000, Messrs. Shuman and McEwen
discussed a possible range of values for Wave with Raymond J. Kalinowsky, a
member of the Wave Board of Directors and representatives of U.S. Bancorp Piper
Jaffray. In a telephone conversation on February 14, 2000 among Mr. Kalinowsky,
Mr. Shuman and a representative of U.S. Bancorp Piper Jaffray, the parties
continued to discuss the terms of a potential acquisition transaction.

     On February 17, 2000, Thomson and Wave executed the following letter in
which Wave agreed not to engage in discussions or negotiations with any person
other than Thomson concerning an acquisition of Wave through March 1, 2000:

                        [LETTERHEAD OF THOMSON LEARNING]

                                  CONFIDENTIAL

                                                               February 17, 2000

Mr. Ray Kalinowski
44 Portland Drive
Frontenac, MO 63131

Dear Mr. Kalinowski:

     We have been engaged in discussions with you concerning our possible
acquisition of Marathon. While exact structure and terms have yet to be agreed
upon, we have proposed the general terms and structure discussed with you and
your representatives earlier this week.

     In order to move forward toward reaching a definitive agreement, which we
believe could be reached during the next couple of weeks, we require an
exclusive negotiating period through March 1, 2000, during which time Marathon
would not initiate or proceed with discussions with any third party. During that
time, we would be prepared to negotiate all aspects of the proposal set forth in
this letter.

     As discussed, we would encourage senior management of Marathon to remain
with the company, and believe that we could offer very competitive compensation,
benefits and rewards, and an attractive work environment for key employees.
Specifically, the employment terms we are prepared to offer key employees are
set forth in a separate letter being sent simultaneously herewith.

     We are prepared to conduct due diligence during the early part of next week
and will send a due diligence checklist under separate cover so that you can set
up a data room.

     Further , this letter is provided to you on a strictly confidential basis.
Neither our interest in Marathon nor the contents of this letter may be
disclosed to any other person other than your and our professional advisors
without our prior written consent. In particular, we will withdraw our proposal
immediately in the event that such confidentiality is breached. Notwithstanding
the foregoing, after consulting with us, you may publicly announce the content
of this letter and our discussions if you are advised by your counsel that you
are required

                                       15
   21

to make such disclosure under applicable law, including applicable federal
securities laws or rules of any exchanges or quotation system on which
Marathon's stock is traded or quoted.

     Except for the obligation in the second paragraph (regarding the exclusive
period) and the fifth paragraph (regarding confidentiality) of this letter,
neither we nor Marathon will have any legal obligation to each other or any
other person or entity in respect of any possible transaction by reason of this
letter or any other communications by or among the parties or any of their
representatives, except and only to the extent set forth in a definitive
agreement and then only on the terms and subject to the conditions thereof.

     We believe that Marathon would complement our existing business interests
and that our offer is in the best interests of your shareholders. We are firmly
committed to moving forward quickly to reach a mutually acceptable agreement and
we look forward to completing our due diligence.

     If you have any questions please contact me at (203) 425-2559.

                                          Very truly yours,

                                          /s/ ERIC L. SHUMAN
                                          --------------------------------------
                                          Eric L. Shuman

cc:  Eric Nicholson, U.S. Bancorp Piper Jaffray
     John Gillis, Armstrong Teasdale LLP
     Robert Christie
     Timothy McEwen

                                          Accepted on Behalf of Marathon

                                          /s/ RAY KALINOWSKI
                                          --------------------------------------
                                          Ray Kalinowski
                                          Director

     This agreement was orally extended on March 1, 2000 through March 7, 2000.

     On February 22 and 23, 2000, Mr. Kousky and J. Michael Bowles, Wave's Chief
Financial Officer, a representative of U.S. Bancorp Piper Jaffray and counsel
for Wave met with executives of Thomson Learning, including Mr. McEwen, and
counsel for Thomson in St. Louis, Missouri to discuss Wave's business strategies
and the terms of a possible acquisition of Wave by Thomson, and to begin a due
diligence review of Wave by Thomson and its counsel.

     On February 25, 2000, counsel for Thomson provided a draft Merger Agreement
to counsel for Wave. During the period from February 22 through March 9, 2000, a
number of meetings, on-site visits to Wave's facilities, calls and other
activities took place between representatives of Thomson and Wave and their
respective counsel in furtherance of Thomson's due diligence efforts. During
this period, counsel for Thomson and Wave also negotiated the terms of the
Merger Agreement.

     On March 10, 2000, Parent, Purchaser and Wave signed the Merger Agreement
and issued a press release announcing the Merger. On March 22, 2000, the
Purchaser commenced the Offer.

THE MERGER AGREEMENT

     THE FOLLOWING IS A SUMMARY OF CERTAIN PROVISIONS OF THE MERGER AGREEMENT.
THIS SUMMARY IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE MERGER AGREEMENT,
WHICH IS INCORPORATED HEREIN BY REFERENCE, AND A COPY OF

                                       16
   22

WHICH HAS BEEN FILED AS AN EXHIBIT TO THE TENDER OFFER STATEMENT ON SCHEDULE TO
(THE "SCHEDULE TO") FILED BY PURCHASER AND THOMSON WITH THE COMMISSION IN
CONNECTION WITH THE OFFER. THE MERGER AGREEMENT MAY BE EXAMINED AND COPIES MAY
BE OBTAINED AT THE PLACES SET FORTH IN SECTION 7. DEFINED TERMS USED HEREIN AND
NOT DEFINED HEREIN SHALL HAVE THE RESPECTIVE MEANINGS ASSIGNED TO THOSE TERMS IN
THE MERGER AGREEMENT.

     The Offer.  The Merger Agreement provides for the commencement of the Offer
as promptly as reasonably practicable after the initial public announcement of
Purchaser's intention to commence the Offer. The obligation of Purchaser to
accept for payment Shares tendered pursuant to the Offer is subject to the
satisfaction of the Minimum Condition and certain other conditions that are
described in Section 14 hereof. Purchaser and Parent have agreed that no change
in the Offer may be made which decreases the price per Share payable in the
Offer, which reduces the maximum number of Shares to be purchased in the Offer
or which imposes conditions to the Offer in addition to those set forth in
Section 14.

     The Merger.  The Merger Agreement provides that, upon the terms and subject
to the conditions thereof, and in accordance with Delaware Law and Missouri Law,
Purchaser shall be merged with and into the Company. As a result of the Merger,
the separate corporate existence of Purchaser will cease and the Company will
continue as the Surviving Corporation and will become an indirect wholly owned
subsidiary of Parent. Upon consummation of the Merger, each issued and then
outstanding Share (other than any Shares held in the treasury of the Company, or
owned by Purchaser, Parent or any direct or indirect wholly owned subsidiary of
Parent or of the Company and any Shares which are held by stockholders who have
not voted in favor of the Merger or consented thereto in writing and who shall
have demanded properly in writing appraisal for such Shares in accordance with
Missouri Law) shall be canceled and converted automatically into the right to
receive the Merger Consideration.

     Pursuant to the Merger Agreement, each share of common stock, par value
$0.01 per share, of Purchaser issued and outstanding immediately prior to the
Effective Time shall be converted into and exchanged for one validly issued,
fully paid and non-assessable share of common stock, par value $0.50 per share,
of the Surviving Corporation.

     The Merger Agreement provides that the directors of Purchaser immediately
prior to the Effective Time will be the initial directors of the Surviving
Corporation and that the officers of the Company immediately prior to the
Effective Time will be the initial officers of the Surviving Corporation.
Subject to the Merger Agreement, at the Effective Time, the Certificate of
Incorporation of Purchaser, as in effect immediately prior to the Effective
Time, will be the Articles of Incorporation of the Surviving Corporation;
provided, however, that, at the Effective Time, Article I of the Articles of
Incorporation of the Surviving Corporation will be amended to read as follows:
"The name of the corporation is Wave Technologies International, Inc.". Subject
to the Merger Agreement, at the Effective Time, the By-laws of Purchaser, as in
effect immediately prior to the Effective Time, will be the By-laws of the
Surviving Corporation.

     Stockholders' Meeting.  Pursuant to the Merger Agreement, the Company
shall, if required by applicable law in order to consummate the Merger, duly
call, give notice of, convene and hold an annual or special meeting of its
stockholders as promptly as practicable following consummation of the Offer for
the purpose of considering and taking action on the Merger Agreement and the
Merger (the "Stockholders' Meeting"). If Purchaser acquires at least two-thirds
of the outstanding Shares, Purchaser will have sufficient voting power to
approve the Merger, even if no other stockholder votes in favor of the Merger.

     Proxy Statement.  The Merger Agreement provides that the Company shall, if
approval of the Company's stockholders is required by applicable law to
consummate the Merger, promptly following consummation of the Offer, file with
the Commission under the Exchange Act, and use its best efforts to have cleared
by the Commission, a proxy statement and related proxy materials (the "Proxy
Statement") with respect to the Stockholders' Meeting and shall cause the Proxy
Statement and all required amendments and supplements thereto to be mailed to
the holders of Shares at the earliest practicable time. The Company has agreed
to include in the Proxy Statement, and not subsequently withdraw or modify in
any manner adverse to Purchaser or Parent, the unanimous recommendation of the
Board that the stockholders of the Company approve and adopt the Merger
Agreement and the Merger and to use its best efforts to obtain such approval and
adoption. Parent and Purchaser have agreed to cause all Shares then owned by
them and their subsidiaries
                                       17
   23

to be voted in favor of approval and adoption of the Merger Agreement and the
Merger. The Merger Agreement provides that, in the event that Purchaser shall
acquire at least 90% of the then outstanding Shares, Parent, Purchaser and the
Company will take all necessary and appropriate action to cause the Merger to
become effective, in accordance with Missouri Law, as promptly as reasonably
practicable after such acquisition, without a meeting of the Company's
stockholders.

     Conduct of Business by the Company Pending the Merger.  Pursuant to the
Merger Agreement, the Company has covenanted and agreed that, between the date
of the Merger Agreement and the Effective Time, unless Parent shall otherwise
agree in writing, which consent will not be unreasonably withheld, the
businesses of the Company and its subsidiaries (the "Subsidiaries" and,
individually, a "Subsidiary") will be conducted only in, and the Company and the
Subsidiaries shall not take any action except in, the ordinary course of
business and in a manner consistent with past practice; and the Company shall
use its reasonable best efforts to preserve substantially intact the business
organization of the Company and the Subsidiaries, to keep available the services
of the current officers, employees and consultants of the Company and the
Subsidiaries and to preserve the current relationships of the Company and the
Subsidiaries with customers, suppliers and other persons with which the Company
or any Subsidiary has significant business relations. The Merger Agreement
provides that, by way of amplification and not limitation, except as
contemplated therein, neither the Company nor any Subsidiary shall, between the
date of the Merger Agreement and the Effective Time, directly or indirectly, do,
or propose to do, any of the following, without the prior written consent of
Parent, which consent will not be unreasonably withheld: (a) amend or otherwise
change its Articles of Incorporation or By-laws or equivalent organizational
documents; (b) issue, sell, pledge, dispose of, grant, encumber, or authorize
the issuance, sale, pledge, disposition, grant or encumbrance of (i) any shares
of any class of capital stock of the Company or any Subsidiary, or any options,
warrants, convertible securities or other rights of any kind to acquire any
shares of such capital stock, or any other ownership interest (including,
without limitation, any phantom interest), of the Company or any Subsidiary
(except for the issuance of a maximum of 631,660 Shares issuable pursuant to (A)
options outstanding on the date of the Merger Agreement under the Company Stock
Option Plans and other agreements (B) the Wave Technologies, Inc. Employee Stock
Purchase Plan and (C) the Wave Technologies, Inc. Profit Sharing and 401(k)
Plan) or (ii) any assets of the Company or any Subsidiary, except in the
ordinary course of business and in a manner consistent with past practice; (c)
declare, set aside, make or pay any dividend or other distribution, payable in
cash, stock, property or otherwise, with respect to any of its capital stock;
(d) reclassify, combine, split, subdivide or redeem or purchase or otherwise
acquire, directly or indirectly, any of its capital stock; (e) (i) acquire
(including, without limitation, by merger, consolidation, or acquisition of
stock or assets or any other business combination) any corporation, partnership,
other business organization or any division thereof or any material amount of
assets, (ii) incur any indebtedness for borrowed money or issue any debt
securities or assume, guarantee or endorse, or otherwise become responsible for,
the obligations of any person, or make any loans or advances except in the
ordinary course of business and consistent with past practice, (iii) enter into
any contract or agreement other than in the ordinary course of business and
consistent with past practice, (iv) authorize, or make any commitment with
respect to, any single capital expenditure which is in excess of $50,000 or
capital expenditures which are, in the aggregate, in excess of $100,000 for the
Company and the Subsidiaries taken as a whole, or (v) enter into or amend any
contract, agreement, commitment or arrangement with respect to any of the
foregoing matters, except in the ordinary course of business and consistent with
past practice; (f) increase the compensation payable or to become payable or the
benefits provided to its director s, officers or employees, except for increases
in the ordinary course of business and consistent with past practice in salaries
or wages of employees of the Company or any Subsidiary who are not directors or
officers of the Company, or grant any severance or termination pay to, or enter
into any employment or severance agreement with any director, officer or other
employee of the Company or of any Subsidiary, or establish, adopt, enter into or
amend any collective bargaining, bonus, profit-sharing, thrift, compensation,
stock option, restricted stock, pension, retirement, deferred compensation,
employment, termination, severance or other plan, agreement, trust, fund, policy
or arrangement for the benefit of any director, officer or employee; (g) take
any action, other than reasonable and usual actions in the ordinary course of
business and consistent with past practice, with respect to accounting policies
or procedures; (h) make any tax election or settle or compromise any material
United States federal, state, local or United

                                       18
   24

Kingdom or other non-United States income tax liability; (i) pay, discharge or
satisfy any claim, liability or obligation (absolute, accrued, asserted or
unasserted, contingent or otherwise), other than the payment, discharge or
satisfaction, in the ordinary course of business and consistent with past
practice, of liabilities reflected or reserved against in the 1999 Balance Sheet
or subsequently incurred in the ordinary course of business and consistent with
past practice; (j) amend, modify or consent to the termination of any material
contracts, or amend, waive, modify or consent to the termination of the
Company's or any Subsidiary's rights thereunder, other than in the ordinary
course of business and consistent with past practice; (k) commence or settle any
litigation, suit, claim, action, proceeding or investigation; or (l) announce an
intention, enter into any formal or informal agreement or otherwise make a
commitment, to do any of the foregoing.

     Company Board Representation.  The Merger Agreement provides that, promptly
upon the purchase by Purchaser of Shares pursuant to the Offer, and from time to
time thereafter, Purchaser shall be entitled to designate up to such number of
directors, rounded up to the next whole number, on the Board as shall give
Purchaser representation on the Board equal to the product of the total number
of directors on the Board (giving effect to the directors elected pursuant to
this sentence), multiplied by the percentage that the aggregate number of Shares
beneficially owned by Purchaser or any affiliate of Purchaser following such
purchase bears to the total number of Shares then outstanding, and the Company
shall, at such time, promptly take all actions necessary to cause Purchaser's
designees to be elected as directors of the Company, including increasing the
size of the Board or securing the resignations of incumbent directors, or both.
The Merger Agreement also provides that, at such times, the Company shall use
its reasonable best efforts to cause persons designated by Purchaser to
constitute the same percentage as persons designated by Purchaser shall
constitute of the Board of (i) each committee of the Board, (ii) each board of
directors of each Subsidiary, and (iii) each committee of each such board, in
each case only to the extent permitted by applicable law. Notwithstanding the
foregoing, until the Effective Time, the Company has agreed to use its
reasonable best efforts to ensure that at least two members of the Board and
each committee of the Board and such boards and committees of the Subsidiaries,
as of the date of the Merger Agreement, who are not employees of the Company
shall remain members of the Board and of such boards and committees.

     The Merger Agreement provides that, following the election or appointment
of Purchaser's designees in accordance with the immediately preceding paragraph
and prior to the Effective Time, any amendment of the Merger Agreement or the
Articles of Incorporation or By-laws of the Company, any termination of the
Merger Agreement by the Company, any extension by the Company of the time for
the performance of any of the obligations or other acts of Parent or Purchaser,
or waiver of any of the Company's rights thereunder, will require the
concurrence of a majority of those directors of the Company then in office who
were neither designated by Purchaser nor are employees of the Company or any
Subsidiary.

     Access to Information.  Pursuant to the Merger Agreement, until the
Effective Time, the Company shall, and shall cause the Subsidiaries and the
officers, directors, employees, auditors and agents of the Company and the
Subsidiaries to, afford the officers, employees and agents of Parent and
Purchaser complete access at all reasonable times to the officers, employees,
agents, properties, offices, plants and other facilities, books and records of
the Company and each Subsidiary, and shall furnish Parent and Purchaser with
such financial, operating and other data and information as Parent or Purchaser,
through its officers, employees or agents, may reasonably request and Parent and
Purchaser have agreed to keep such information confidential, except in certain
circumstances.

     No Solicitation of Transactions.  The Company has agreed that neither it
nor any Subsidiary shall, directly or indirectly, through any officer, director,
agent or otherwise, (i) solicit, initiate or encourage the submission of, any
Acquisition Proposal or (ii) except as required by the fiduciary duties of the
Board under applicable law after having received advice from outside legal
counsel (x) participate in any discussions or negotiations regarding or (y)
after also entering into a customary confidentiality agreement on terms no less
favorable to the Company than those contained in the Confidentiality Agreement,
furnish to any person, any information with respect to, or otherwise cooperate
in any way with respect to, or assist or participate in, facilitate or
encourage, any unsolicited proposal that constitutes, or may reasonably be
expected to lead to, a Superior Proposal.

                                       19
   25

     The Company has also agreed that neither the Board nor any committee
thereof shall (i) withdraw or modify, or propose to withdraw or modify, in a
manner adverse to Parent or Purchaser, the approval or recommendation by the
Board or any such committee of the Merger Agreement, the Offer, the Merger or
any other transaction contemplated thereby (ii) approve or recommend, or propose
to approve or recommend, any Acquisition Proposal or (iii) enter into any
agreement with respect to any Acquisition Proposal. Notwithstanding the
foregoing, in the event that, prior to the time of acceptance for payment of
Shares pursuant to the Offer, the Board determines in good faith that it is
required to do so by its fiduciary duties under applicable law after having
received advice from outside legal counsel, the Board may withdraw or modify its
approval or recommendation of the Offer and the Merger, but only to terminate
the Merger Agreement in accordance with the termination provisions specified
therein (and, concurrently with such termination, cause the Company to enter
into an agreement with respect to a Superior Proposal).

     The Company has agreed to, and will direct or cause its directors,
officers, employees, representatives and agents to, immediately cease and cause
to be terminated any discussions or negotiations with any parties that may be
ongoing with respect to any Acquisition Proposal. The Company has also agreed to
promptly advise Parent orally (to be confirmed as soon as reasonably practicable
in writing) of (i) any Acquisition Proposal or any request for information with
respect to any Acquisition Proposal, the material terms and conditions of such
Acquisition Proposal or request and the identity of the person making such
Acquisition Proposal or request and (ii) any changes in any such Acquisition
Proposal or request.

     "Acquisition Proposal" means (i) any proposal or offer from any person
relating to any direct or indirect acquisition of (A) all or a substantial part
of the assets of the Company or of any Subsidiary or (b) over 15% of any class
of equity securities of the Company or of any Subsidiary; (ii) any tender offer
or exchange offer, as defined pursuant to the Exchange Act, that, if
consummated, would result in any person beneficially owning 15% or more of any
class of equity securities of the Company or any Subsidiary; (iii) any merger,
consolidation, business combination, sale of all or a substantial part of the
assets, recapitalization, liquidation, dissolution or similar transaction
involving the Company or any Subsidiary, other than the Offer and the Merger, or
(iv) any other transaction the consummation of which would reasonably be
expected to impede, interfere with, prevent or materially delay the Offer or the
Merger.

     "Superior Proposal" means any Acquisition Proposal on terms which the Board
determines, in its good faith judgment (after having received the advice of U.S.
Bancorp Piper Jaffray or another financial advisor of nationally recognized
reputation), to be more favorable to the Company's stockholders than the Offer
and the Merger.

     Except as required by the Board's fiduciary duties under applicable law
after having received advice from outside legal counsel, the Company has agreed
not to release any third party from, or waive any provision of, any
confidentiality or standstill agreement to which the Company is a party.

     Employee Stock Options.  The Merger Agreement also provides that, effective
as of the Effective Time, the Company will use reasonable best efforts,
including obtaining the consent of the individual option holders, if necessary,
to (i) terminate the Company's 1993 Stock Option Plan, 1995 Stock Option Plan,
the Company's Outside Directors Stock Option Plan and 1997 Stock Option Plan,
each as amended through the date of this Agreement (the "Company Stock Option
Plans"), (ii) cancel, at the Effective Time, each outstanding option to purchase
shares of Company Common Stock granted under the Company Stock Option Plans
(each, a "Company Stock Option") that is outstanding and unexercised as of such
date. Each holder of a Company Stock Option that is outstanding and unexercised
at the Effective Time will be entitled to receive from the Surviving Corporation
immediately after the Effective Time, in exchange for the cancellation of such
Company Stock Option, an amount in cash equal to the excess, if any, of (x) the
Merger Consideration over (y) the per share exercise price of such Company Stock
Option, multiplied by the number of shares of Company Common Stock subject to
such Company Stock Option.

     Directors' and Officers' Indemnification Insurance.  The Merger Agreement
further provides that the By-laws of the Surviving Corporation will contain
provisions no less favorable with respect to indemnification than are set forth
in Article VII, of the By-laws of the Company, which provisions shall not be
amended, repealed or otherwise modified for a period of six years from the
Effective Time in any manner that would
                                       20
   26

affect adversely the rights thereunder of individuals who, at the Effective
Time, were directors, officers, employees, fiduciaries or agents of the Company,
unless such modification shall be required by law.

     The Merger Agreement also provides that the Surviving Corporation will use
its reasonable best efforts to maintain in effect for three years from the
Effective Time, if available, the current directors' and officers' liability
insurance policies maintained by the Company (provided that the Surviving
Corporation may substitute therefor policies of at least the same coverage
containing terms and conditions that are not materially less favorable) with
respect to matters occurring prior to the Effective Time; provided, however,
that in no event shall the Surviving Corporation be required to expend more than
an amount per year equal to 200% of current annual premiums paid by the Company
for such insurance (which premiums the Company has represented to Parent and
Purchaser to be $35,000 in the aggregate).

     Parent, Purchaser and the Company have also agreed that in the event the
Company or the Surviving Corporation or any of their respective successors or
assigns (i) consolidates with or merges into any other person and shall not be
the continuing or surviving corporation or entity of such consolidation or
merger or (ii) transfers all or substantially all of its properties and assets
to any person, then and in each such case, proper provision shall be made so
that the successors and assigns of the Company or the Surviving Corporation, as
the case may be, or at Parent's option, Parent, shall assume the foregoing
indemnity obligations.

     Further Action; Reasonable Best Efforts.  The Merger Agreement provides
that, subject to its terms and conditions, each of the parties thereto shall (i)
make promptly its respective filings, and thereafter make any other required
submissions, under the HSR Act with respect to the Merger Agreement or the
transactions contemplated thereby and (ii) use its reasonable best efforts to
take, or cause to be taken, all appropriate action, and to do, or cause to be
done, all things necessary, proper or advisable under applicable laws and
regulations to consummate and make effective the Merger including, without
limitation, using its reasonable best efforts to obtain all Permits, consents,
approvals, authorizations, qualifications and orders of Governmental Authorities
and parties to contracts with the Company and the Subsidiaries as are necessary
for the consummation of the Merger and to fulfill the conditions to the Offer
and the Merger; provided that neither the Company, Purchaser nor Parent will be
required to take any action, including entering into a consent decree, hold
separate orders or other arrangements, that (i) requires the divestiture of any
assets of any of the Purchaser, Parent, Company or any of their respective
subsidiaries or (ii) limits Parent's freedom of action with respect to, or its
ability to retain, the Company and the Subsidiaries or any portion thereof or
any of Parent's or its affiliates' other assets or businesses. In case, at any
time after the Effective Time, any further action is necessary or desirable to
carry out the purposes of the Merger Agreement, the proper officers and
directors of each party to the Merger Agreement are required to use their
reasonable best efforts to take all such action. Parent or the Purchaser will
pay all fees associated with the HSR submission.

     The Merger Agreement also provides that each of the parties thereto will
cooperate and use its reasonable best efforts vigorously to contest and resist
any Action, including administrative or judicial Action, and to have vacated,
lifted, reversed or overturned any decree, judgment, injunction or other order
(whether temporary, preliminary or permanent) that is in effect and that
restricts, prevents or prohibits consummation of the Merger including, without
limitation, by vigorously pursuing all available avenues of administrative and
judicial appeal.

     Representations and Warranties.  The Merger Agreement contains various
customary representations and warranties of the parties thereto including
representations by the Company and Seller as to the absence of certain changes
or events concerning the Company's business, compliance with law, absence of
litigation, employee benefit plans, labor matters, property and leases,
intellectual property, environmental matters, taxes, amendments to the Rights
Agreement, material contracts, insurance and brokers.

     Conditions to the Merger.  Under the Merger Agreement, the respective
obligations of each party to effect the Merger are subject to the satisfaction,
at or prior to the Effective Time, of the following conditions: (a) If and to
the extent required by Missouri Law, the Merger Agreement and the Merger shall
have been approved and adopted by the affirmative vote of the stockholders of
the Company; (b) any waiting period (and any extension thereof) applicable to
the consummation of the Merger under the HSR Act shall have
                                       21
   27

expired or been terminated; (c) no Governmental Authority shall have enacted,
issued, promulgated, enforced or entered any Law (whether temporary, preliminary
or permanent) which is then in effect and has the effect of making the
acquisition of Shares by Parent or Purchaser or any affiliate of either of them
illegal or otherwise restricting, preventing or prohibiting consummation of the
Merger; and (d) Purchaser or its permitted assignee shall have purchased all
Shares validly tendered and not withdrawn pursuant to the Offer.

     Termination.  The Merger Agreement provides that it may be terminated and
the Merger may be abandoned at any time prior to the Effective Time,
notwithstanding any requisite approval and adoption of the Merger Agreement and
the Merger by the stockholders of the Company (a) by mutual written consent of
each of Parent, Purchaser and the Company duly authorized by the Boards of
Directors of Parent, Purchaser and the Company; or (b) by either Parent,
Purchaser or the Company if (i) the Effective Time shall not have occurred on or
before June 30, 2000; provided, however, that the right to terminate the Merger
Agreement under (b)(i) will not be available to any party whose failure to
fulfill any obligation under the Merger Agreement has been the cause of, or
resulted in, the failure of the Effective Time to occur on or before such date
or (ii) any Governmental Authority shall have enacted, issued, promulgated,
enforced or entered any injunction, order, decree or ruling (whether temporary,
preliminary or permanent) which has become final and nonappealable and has the
effect of making consummation of the Offer or the Merger illegal or otherwise
preventing or prohibiting consummation of the Offer or the Merger; or (c) by
Parent if (i) due to an occurrence or circumstance that would result in a
failure to satisfy any condition set forth in Section 14 hereto, Purchaser shall
have (A) failed to commence the Offer within 10 business days following the date
of the Merger Agreement, (B) terminated the Offer without having accepted any
Shares for payment thereunder or (C) failed to accept Shares for payment
pursuant to the Offer within 90 days following the commencement of the Offer
(provided, however, that the applicable time period specified in (A) and (C)
above shall be extended until the earlier to occur of (x) the fifth business day
following expiration or termination of any applicable waiting period under the
HSR Act and (y) June 30, 2000, unless such action or inaction under (A), (B) or
(C) shall have been caused by or resulted from the failure of Parent or
Purchaser to perform, in any material respect, any of their material covenants
or agreements contained in the Merger Agreement, or the material breach by
Parent or Purchaser of any of their material representations or warranties
contained in the Merger Agreement or (ii) prior to the purchase of Shares
pursuant to the Offer, the Board or any committee thereof shall have withdrawn
or modified in a manner adverse to Purchaser or Parent its approval or
recommendation of the Merger Agreement, the Offer, the Merger or any other
transaction contemplated thereby, or shall have recommended or approved any
Acquisition Proposal, or shall have resolved to do any of the foregoing; or (d)
by the Company, upon approval of the Board, if (i) Purchaser shall have (A)
failed to commence the Offer within 10 business days following the date of the
Merger Agreement, (B) terminated the Offer without having accepted any Shares
for payment thereunder or (C) failed to accept Shares for payment pursuant to
the Offer within 90 days following the commencement of the Offer (provided,
however, that the applicable time period specified in (A) and (C) above shall be
extended until the earlier to occur of (x) the fifth business day following
expiration or termination of any applicable waiting period under the HSR Act and
(y) June 30, 2000, unless such action or inaction under (A), (B) or (C) shall
have been caused by or resulted from the failure of the Company to perform, in
any material respect, any of its material covenants or agreements contained in
the Merger Agreement or the material breach by the Company of any of its
material representations or warranties contained in the Merger Agreement or (ii)
prior to the purchase of Shares pursuant to the Offer, if the Board determines
in good faith that it is required to do so by its fiduciary duties under
applicable law after having received advice from outside legal counsel in order
to enter into a definitive agreement with respect to a Superior Proposal, upon
three business days' prior written notice to Parent, setting forth in reasonable
detail the identity of the person making, and the final terms and conditions of,
the Superior Proposal and after duly considering any proposals that may be made
by Parent during such three business day period; provided, however, that any
termination of the Merger Agreement pursuant to (d)(ii) above shall not be
effective until the Company has made full payment of all amounts described below
under the section entitled "Fees and Expenses".

     Effect of Termination.  In the event of the termination of the Merger
Agreement, the Merger Agreement shall forthwith become void, and there shall be
no liability on the part of any party thereto, except (i) as set forth below
under the section entitled "Fees and Expenses" and (ii) nothing in the Merger
                                       22
   28

Agreement shall relieve any party from liability for any breach thereof prior to
the date of such termination, provided, however, that the Confidentiality
Agreement shall survive any termination of the Merger Agreement.

     Fees and Expenses.  The Merger Agreement provides that in the event that
(i) any person (including, without limitation, the Company or any affiliate
thereof), other than Parent or any affiliate of Parent, shall have become the
beneficial owner of more than 15% of the then-outstanding Shares, and the Merger
Agreement shall have been terminated pursuant to the provisions described above
in clause (b)(i), (c) or (d); or (ii) any person shall have commenced, publicly
proposed or communicated to the Company an Acquisition Proposal that is publicly
disclosed and (A) the Offer shall have remained open for at least 20 business
days, (B) the Minimum Condition shall not have been satisfied, (C) the Merger
Agreement shall have been terminated pursuant to the termination provision
described above and (D) the Company enters into an agreement with the respect to
an Acquisition Proposal, or an Acquisition Proposal is consummated, in each case
within 12 months after such termination of the Merger Agreement; or (iii) the
Merger Agreement is terminated (A) pursuant to (x) the provisions described
above in (c)(ii) or (d)(ii) or (y) to the provisions described above in (c)(i)
or (d)(i), to the extent that the failure to commence, the termination or the
failure to accept any Shares for payment, as set forth in the provisions
described above in (c)(i) or (d)(i), as the case may be, will relate to the
failure of the Company to perform, in any material respect, any of its material
covenants or agreements contained in the Merger Agreement or the knowing or
intentional breach by the Company of any of its material representations or
warranties contained in the Merger Agreement and (B) the Company enters into an
agreement with respect to an Acquisition Proposal, or an Acquisition Proposal is
consummated, in each case within 12 months after the termination of the Merger
Agreement or (iv) the Company enters into an agreement with respect to an
Acquisition Proposal that was commenced, publicly proposed or communicated to
the Company prior to the termination of the Merger Agreement pursuant to the
termination provision described above or such an Acquisition Proposal is
consummated, in each case within 12 months after such termination, and the
Company shall not theretofore have been required to pay the Fee to Parent
pursuant to the provisions described above in (a)(i), (a)(ii) or (a)(iii); then,
in any such event, the Company shall pay Parent promptly (but in no event later
than one business day after the first of such events shall have occurred) a fee
of $1.5 million (the "Fee"), which amount shall be payable in immediately
available funds, plus all out-of-pocket expenses and fees up to $250,000, in the
aggregate (including, without limitation, all fees of counsel, accountants,
experts and consultants to Parent and Purchaser, the fees associated with the
HSR submission, and all printing and advertising expenses and filing fees)
actually incurred or accrued by either of them or on their behalf in connection
with the Offer and the Merger (all the foregoing being referred to herein
collectively as the "Expenses"). Except as set forth in this paragraph and all
fees associated with the HSR submission, all costs and expenses incurred in
connection with the Merger Agreement, the Offer and the Merger shall be paid by
the party incurring such expenses, whether or not any transaction contemplated
thereby is consummated.

CONFIDENTIALITY AGREEMENT

     THE FOLLOWING IS A SUMMARY OF CERTAIN PROVISIONS OF THE CONFIDENTIALITY
AGREEMENT, DATED JANUARY 13, 1999, BETWEEN THE COMPANY AND THOMSON, AS AMENDED
ON JANUARY 22, 1999 (THE "CONFIDENTIALITY AGREEMENT"). THIS SUMMARY IS QUALIFIED
IN ITS ENTIRETY BY REFERENCE TO THE CONFIDENTIALITY AGREEMENT, WHICH IS
INCORPORATED HEREIN BY REFERENCE, AND A COPY OF WHICH HAS BEEN FILED WITH THE
COMMISSION AS AN EXHIBIT TO THE SCHEDULE TO. THE CONFIDENTIALITY AGREEMENT MAY
BE EXAMINED AND COPIES MAY BE OBTAINED AT THE PLACES SET FORTH SET FORTH IN
SECTION 7.

     On January 13, 1999, the Company and Course Technology, an affiliate of
Parent, executed a Confidentiality Agreement (the "Confidentiality Agreement").
The Confidentiality Agreement was amended by a letter agreement executed on
January 22, 1999. Pursuant to the terms of the Confidentiality Agreement, the
Company agreed to provide to Course Technology or an affiliate certain
confidential and proprietary information concerning the Company and Course
Technology, on behalf of itself and any of its affiliates which received any of
the confidential information, agreed among other things: (1) to keep the
confidential information confidential, (2) not to use the Confidential
Information for any purpose other than to evaluate a

                                       23
   29

possible acquisition transaction with the Company, (3) not to disclose the fact
that the confidential information had been made available to Course and (4) that
neither Course nor any of its affiliates would in any manner, directly or
indirectly, except at the specific invitation of the Company, for a period of
one year after the date of the Confidentiality Agreement, (a) effect or seek,
offer or propose to effect, or cause or participate in or in any way assist any
other person to effect or seek, offer or propose (whether publicly or otherwise)
to effect or participate in (i) any acquisition of any securities or assets of
the Company or any of its subsidiaries, (ii) any tender or exchange offer,
merger or other business combination involving the Company or any of its
subsidiaries, (iii) any recapitalization, restructuring, liquidation,
dissolution or other extraordinary transaction with respect to the Company or
any of its subsidiaries, or (iv) make any solicitation of proxies or consents to
vote any voting securities of the Company, or (c) otherwise act to seek control
or influence the management, board of directors or policies of the Company, or
(d) take any action which might force the Company to make a public announcement
regarding any of the types of matters set forth above.

INTEREST OF CERTAIN PERSONS IN THE MERGER

     Thomson has requested that Kenneth Kousky, the Chairman of the Board,
President and Chief Executive Officer of Wave, remain as the President of Wave
following the Merger at a base salary of $225,000 per year, subject to review on
March 1, 2001. Under the terms of Thomson's proposal to Mr. Kousky, he would
participate in (1) a short term incentive plan that would allow him to earn an
incentive bonus of between 50% and 100% of his base salary if Wave meets certain
financial targets to be established by the parties and (2) a three year long
term incentive plan that would allow Mr. Kousky to earn an additional incentive
bonus of up to 50% of his base salary in the first two years and 100% of his
base salary in the third year if Wave meets certain financial targets to be
established by the parties, including in each case a guaranteed portion for the
remainder of fiscal year 2000. Thomson's offer provides that if Mr. Kousky's
employment were terminated, he would receive severance in the form of salary
continuation for 12 months, provided that he executes a separation letter, which
would include an agreement by Mr. Kousky not to compete with Wave for a period
of one year from the date of termination of his employment. Mr. Kousky would
also participate in other benefit plans available to similarly situated
employees of Thomson Learning. Thomson and Mr. Kousky and his counsel are
negotiating the terms of an employment agreement, but no agreement has been
reached to date. The foregoing is a summary of Thomson's proposal to Mr. Kousky.
The Offer and the Merger are not conditioned on Mr. Kousky accepting these or
any other terms of employment.

11.  PURPOSE OF THE OFFER; PLANS FOR THE COMPANY AFTER THE OFFER AND THE MERGER.

     Purpose of the Offer.  The Offer is being made pursuant to the Merger
Agreement. The purpose of the Offer and the Merger is for Thomson to acquire
control of, and the entire equity interest in, the Company. The purpose of the
Merger is for Thomson to acquire all Shares not purchased pursuant to the Offer.
Upon consummation of the Merger, the Company will become an indirect wholly
owned subsidiary of Thomson.

     Under Missouri Law, the approval of the Board and the affirmative vote of
the holders of two-thirds of the outstanding Shares is required to approve and
adopt the Merger Agreement and the transactions contemplated thereby, including
the Merger. The Board of Directors of the Company has unanimously determined
that each of the Offer and the Merger is fair to, and in the best interests of,
the holders of Shares, has approved, adopted and declared advisable the Merger
Agreement and the Merger (such approval and adoption having been made in
accordance with Missouri Law) and has resolved to recommend that Stockholders
accept the Offer and tender their Shares pursuant to the Offer. Unless the
Merger is consummated pursuant to the short-form merger provisions under
Missouri Law described below, the only remaining required corporate action of
the Company is the approval and adoption of the Merger Agreement and the Merger
by the affirmative vote of the holders of a at least two-thirds of the Shares.
Accordingly, if the Minimum Condition is satisfied, Purchaser will have
sufficient voting power to cause the approval and adoption of the Merger
Agreement and the Merger without the affirmative vote of any other stockholder.

     In the Merger Agreement, the Company has agreed to duly call, give notice
of, convene and hold an annual or special meeting of its stockholders as
promptly as practicable following consummation of the Offer for the purpose of
considering and taking action on the Merger Agreement and the Merger, if such
action is

                                       24
   30

required by Missouri Law. Thomson and Purchaser have agreed that all Shares
owned by them and their subsidiaries will be voted in favor of the approval and
adoption of the Merger Agreement and the Merger.

     The Merger Agreement provides that, promptly upon the purchase by Purchaser
of Shares pursuant to the Offer, Purchaser will be entitled to designate
representatives to serve on the Board in proportion to Purchaser's ownership of
Shares following such purchase. See Section 10. Purchaser expects that such
representation would permit Purchaser to exert substantial influence over the
Company's conduct of its business and operations.

     Short-Form Merger.  Under Missouri Law, if Purchaser acquires, pursuant to
the Offer or otherwise, at least 90% of the then outstanding Shares, Purchaser
will be able to approve the Merger without a vote of the Company's stockholders.
In such event, Parent, Purchaser and the Company have agreed in the Merger
Agreement to take, at the request of Purchaser, all necessary and appropriate
action to cause the Merger to become effective as promptly as reasonably
practicable after such acquisition, without a meeting of the Company's
stockholders. If, however, Purchaser does not acquire at least 90% of the
outstanding Shares pursuant to the Offer or otherwise and a vote of the
Company's stockholders is required under Missouri Law, a significantly longer
period of time would be required to effect the Merger.

     Appraisal Rights.  No appraisal rights are available in connection with the
Offer. However, if the Merger is consummated, stockholders who have not tendered
their Shares will have certain rights under Missouri Law to dissent from the
Merger and demand appraisal of, and to receive payment in cash of the fair value
of, their Shares. Stockholders who perfect such rights by complying with the
procedures set forth in Section 351.455 of Missouri Law ("Section 351.455") will
have the "fair value" of their Shares (exclusive of any element of value arising
from the accomplishment or expectation of the Merger) determined by the Missouri
Circuit Court and will be entitled to receive a cash payment equal to such fair
value for the Surviving Corporation. In addition, such dissenting stockholders
would be entitled to receive payment of a fair rate of interest from the date of
consummation of the Merger on the amount determined to be the fair value of
their Shares. In Phelps v. Watson-Stillman Co. the Missouri Supreme Court stated
that the "net asset value" is not the sole test in determining the fair value of
the Shares.

     Thomson does not intend to object, assuming the proper procedures are
followed, to the exercise of appraisal rights by any stockholder and the demand
for appraisal of, and payment in cash for the fair value of, the Shares. Thomson
intends, however, to cause the Surviving Corporation to argue in an appraisal
proceeding that, for purposes of such proceeding, the fair value of each Share
is less than or equal to the Merger Consideration. In this regard, stockholders
should be aware that opinions of investment banking firms as to the fairness
from a financial point of view (including U.S. Bancorp Piper Jaffray's) are not
necessarily opinions as to "fair value" under Section 351.455.

     The foregoing summary of the rights of dissenting stockholders under
Missouri Law does not purport to be a complete statement of the procedures to be
followed by stockholders desiring to exercise any dissenters' rights under
Missouri Law. The preservation and exercise of dissenters' rights require strict
adherence to the applicable provisions of Missouri Law. The text of Section
351.455 is attached to this Offer to Purchase at Schedule III.

     Going Private Transactions.  The Commission has adopted Rule 13e-3 under
the Exchange Act which is applicable to certain "going private" transactions and
which may under certain circumstances be applicable to the Merger or another
business combination following the purchase of Shares pursuant to the Offer in
which Purchaser seeks to acquire the remaining Shares not held by it. Purchaser
believes that Rule 13e-3 will not be applicable to the Merger. Rule 13e-3
requires, among other things, that certain financial information concerning the
Company and certain information relating to the fairness of the proposed
transaction and the consideration offered to minority stockholders in such
transaction be filed with the Commission and disclosed to stockholders prior to
consummation of the transaction.

     Plans for the Company.  It is expected that, initially following the
Merger, the business and operations of the Company will, except as set forth in
this Offer to Purchase, be continued by the Company substantially as they are
currently being conducted. Thomson will continue to evaluate the business and
operations of the

                                       25
   31

Company during the pendency of the Offer and after the consummation of the Offer
and the Merger, and will take such actions as it deems appropriate under the
circumstances then existing. Thomson intends to seek additional information
about the Company during this period. Thereafter, Thomson intends to review such
information as part of a comprehensive review of the Company's business,
operations, capitalization and management with a view to optimizing exploitation
of the Company's potential in conjunction with Thomson's businesses. It is
expected that the business and operations of the Company would form an important
part of Thomson's future business plans.

     Except as indicated in this Offer to Purchase, Thomson does not have any
present plans or proposals which relate to or would result in (i) any
extraordinary corporate transaction, such as a merger, reorganization or
liquidation, relocation of any operations of the Company or any of its
subsidiaries, (ii) any purchase, sale or transfer of a material amount of
assets, involving the Company or any of its subsidiaries, (iii) any material
change in the Company's present indebtedness, capitalization or dividend policy,
(iv) any change in the present board of directors or management of the Company,
(v) any other material change in the Company's corporate structure or business,
(vi) any class of equity security of the Company being delisted from a national
stock exchange or ceasing to be authorized to be quoted in an automated
quotation system operated by a national securities association, (vii) any class
of equity securities of the Company becoming eligible for termination of
registration under Section 12(g)(4) of the Exchange Act, (viii) the suspension
of the Company's obligation to file reports under Section 15(d) of the Act, (ix)
the acquisition by any person of additional securities of the Company, or the
disposition of securities of the Company, or (x) any changes in the Company's
charter, bylaws or other governing instruments or other actions that could
impede the acquisition of control of the Company.

12.  DIVIDENDS AND DISTRIBUTIONS.

     The Merger Agreement provides that the Company shall not, between the date
of the Merger Agreement and the Effective Time, without the prior written
consent of Parent, which consent will not be unreasonably withheld, (a) issue,
sell, pledge, dispose of, grant, encumber, or authorize the issuance, sale,
pledge, disposition, grant or encumbrance of (i) any shares of any class of
capital stock of the Company or any Subsidiaries, or any options, warrants,
convertible securities or other rights of any kind to acquire any shares of such
capital stock, or any other ownership interest (including, without limitation,
any phantom interest), of the Company or any Subsidiaries (except for the
issuance of a maximum of 631,660 Shares issuable pursuant to (A) options
outstanding on the date hereof under the Company Stock Option Plans outstanding
and other agreements, (B) the Wave Technologies, Inc. Employee Stock Purchase
Plan and (C) the Wave Technologies, Inc. Profit Sharing and 401(k) Plan) or (ii)
any assets of the Company or any Subsidiaries, except for transactions in the
ordinary course of business consistent with past practice; (b) declare, set
aside, make or pay any dividend or other distribution, payable in cash, stock,
property or otherwise, with respect to any of its capital stock or (c)
reclassify, combine, split, subdivide or redeem, or purchase or otherwise
acquire, directly or indirectly, any of its capital stock. See Section 10. If,
however, the Company should, during the pendency of the Offer, (i) split,
combine or otherwise change the Shares or its capitalization, (ii) acquire or
otherwise cause a reduction in the number of outstanding Shares or (iii) issue
or sell any additional Shares, shares of any other class or series of capital
stock, other voting securities or any securities convertible into, or options,
rights, or warrants, conditional or otherwise, to acquire, any of the foregoing,
then, without prejudice to Purchaser's rights under Section 14, Purchaser may
(subject to the provisions of the Merger Agreement) make such adjustments to the
purchase price and other terms of the Offer (including the number and type of
securities to be purchased) as it deems appropriate to reflect such split,
combination or other change.

     If, on or after March 10, 2000, the Company should declare, set aside, make
or pay any dividend on the Shares or make any other distribution (including the
issuance of additional shares of capital stock pursuant to a stock dividend or
stock split, the issuance of other securities or the issuance of rights for the
purchase of any securities) with respect to the Shares that is payable or
distributable to stockholders of record on a date prior to the transfer to the
name of Purchaser or its nominee or transferee on the Company's stock transfer
records of the Shares purchased pursuant to the Offer, then, without prejudice
to Purchaser's rights under Section 14, (i) the purchase price per Share payable
by Purchaser pursuant to the Offer will be reduced (subject to the

                                       26
   32

provisions of the Merger Agreement) to the extent any such dividend or
distribution is payable in cash and (ii) any non-cash dividend, distribution or
right shall be received and held by the tendering stockholder for the account of
Purchaser and will be required to be promptly remitted and transferred by each
tendering stockholder to the Depositary for the account of Purchaser,
accompanied by appropriate documentation of transfer. Pending such remittance
and subject to applicable law, Purchaser will be entitled to all the rights and
privileges as owner of any such non-cash dividend, distribution or right and may
withhold the entire purchase price or deduct from the purchase price the amount
or value thereof, as determined by Purchaser in its sole discretion.

13.  POSSIBLE EFFECTS OF THE OFFER ON THE MARKET FOR SHARES, NASDAQ LISTING,
     MARGIN REGULATIONS AND EXCHANGE ACT REGISTRATION.

     Possible Effects of the Offer on the Market for the Shares.  The purchase
of Shares by Purchaser pursuant to the Offer will reduce the number of Shares
that might otherwise trade publicly and will reduce the number of holders of
Shares, which could adversely affect the liquidity and market value of the
remaining Shares held by the public.

     Thomson intends to cause the delisting of the Shares by Nasdaq following
consummation of the Offer.

     Nasdaq Listing.  Depending upon the number of Shares purchased pursuant to
the Offer, the Shares may no longer meet the standards for continued listing on
Nasdaq. According to Nasdaq's published guidelines, the Shares would not be
eligible to be included for listing if, among other things, the number of Shares
publicly held falls below 100,000, the number of holders of Shares falls below
300 or the market value of such publicly held Shares is not at least $200,000.
If, as a result of the purchase of Shares pursuant to the Offer, the Merger or
otherwise, the Shares no longer meet the requirements of Nasdaq for continued
listing, the listing of the Shares will be discontinued. In such event, the
market for the Shares would be adversely affected. In the event the Shares were
no longer eligible for listing on Nasdaq, quotations might still be available
from other sources. The extent of the public market for the Shares and the
availability of such quotations would, however, depend upon the number of
holders of such Shares remaining at such time, the interest in maintaining a
market in such Shares on the part of securities firms, the possible termination
of registration of such Shares under the Exchange Act as described below and
other factors.

     Exchange Act Registration.  The Shares are currently registered under the
Exchange Act. Such registration may be terminated upon application by the
Company to the Commission if the Shares are not listed on a "national securities
exchange" and there are fewer than 300 record holders. The termination of the
registration of the Shares under the Exchange Act would substantially reduce the
information required to be furnished by the Company to holders of Shares and to
the Commission and would make certain provisions of the Exchange Act, such as
the short-swing profit recovery provisions of Section 16(b), the requirement of
furnishing a proxy statement in connection with stockholders' meetings pursuant
to Section 14(a) or 14(c) of the Exchange Act and the related requirements of an
annual report, and the requirements of Rule 13e-3 under the Exchange Act with
respect to "going private" transactions, no longer applicable to the Shares. In
addition, "affiliates" of the Company and persons holding "restricted
securities" of the Company may be deprived of the ability to dispose of such
securities pursuant to Rule 144 promulgated under the Securities Act of 1933, as
amended. If registration of the Shares under the Exchange Act were terminated,
the Shares would no longer be eligible for Nasdaq reporting. Purchaser currently
intends to seek to cause the Company to terminate the registration of the Shares
under the Exchange Act as soon after consummation of the Offer as the
requirements for termination of registration are met.

     Margin Regulations.  The Shares are currently "margin securities", as such
term is defined under the rules of the Board of Governors of the Federal Reserve
System (the "Federal Reserve Board"), which has the effect, among other things,
of allowing brokers to extend credit on the collateral of such securities.
Depending upon factors similar to those described above regarding listing and
market quotations, following the Offer it is possible that the Shares might no
longer constitute "margin securities" for purposes of the margin regulations of
the Federal Reserve Board, in which event such Shares could no longer be used as
collateral for loans made

                                       27
   33

by brokers. In addition, if registration of the Shares under the Exchange Act
were terminated, the Shares would no longer constitute "margin securities".

14.  CERTAIN CONDITIONS OF THE OFFER.

     Notwithstanding any other provision of the Offer, but subject to the terms
of the Merger Agreement, Purchaser shall not be required to accept for payment
any Shares tendered pursuant to the Offer, and may extend, terminate or amend
the Offer if (i) immediately prior to the expiration of the Offer, the Minimum
Condition shall not have been satisfied, (ii) any applicable waiting period
under the HSR Act shall not have expired or been terminated prior to the
expiration of the Offer, or (iii) at any time on or after March 10, 2000 and
prior to the Expiration Date, any of the following conditions shall exist:

          (a) there shall have been instituted or be pending any Action before
     any Governmental Authority, (i) challenging or seeking to make illegal,
     materially delay, or otherwise, directly or indirectly, restrain or
     prohibit or make materially more costly, the making of the Offer, the
     acceptance for payment of any Shares by Parent, Purchaser or any other
     affiliate of Parent, or the purchase of Shares, or the consummation of any
     other transaction contemplated by the Merger Agreement, or seeking to
     obtain material damages in connection with any transaction contemplated by
     the Merger Agreement; (ii) seeking to prohibit or limit materially the
     ownership or operation by the Company, Parent or any of their subsidiaries
     of all or any of the business or assets of the Company, Parent or any of
     their subsidiaries that is material to either Parent and its subsidiaries
     or the Company and its subsidiaries, in either case, taken as a whole, or
     to compel the Company, Parent or any of their subsidiaries as a result of
     the Merger Agreement or any of the transactions contemplated thereby, to
     dispose of or to hold separate all or any portion of the business or assets
     of the Company, Parent or any of their subsidiaries, that is material to
     either Parent and its subsidiaries or the Company and its subsidiaries, in
     each case, taken as a whole; (iii) seeking to impose or confirm any
     limitation on the ability of Parent, Purchaser or any other affiliate of
     Parent to exercise effectively full rights of ownership of any Shares,
     including, without limitation, the right to vote any Shares acquired by
     Purchaser pursuant to the Offer or any Stockholders Agreement or otherwise
     on all matters properly presented to the Company's stockholders including,
     without limitation, the approval and adoption of the Merger Agreement or
     any of the transactions contemplated thereby; (iv) seeking to require
     divestiture by Parent, Purchaser or any other affiliate of Parent of any
     Shares; or (v) which otherwise would prevent or materially delay
     consummation of the Offer or the Merger or otherwise prevent or materially
     delay the Company from performing its obligations under the Merger
     Agreement or would have a Material Adverse Effect;

          (b) there shall have been any statute, rule, regulation, legislation
     or interpretation enacted, promulgated, amended, issued or deemed
     applicable to (i) Parent, the Company or any subsidiary or affiliate of
     Parent or the Company or (ii) the Merger Agreement or to transactions
     contemplated thereby, by any United States or non-United States legislative
     body or Governmental Authority with appropriate jurisdiction, other than
     the routine application of the waiting period provisions of the HSR Act to
     the Offer or the Merger, that is reasonably likely to result, directly or
     indirectly, in any of the consequences referred to in clauses (i) through
     (v) of paragraph (a) above;

          (c) any Material Adverse Effect shall have occurred;

          (d) there shall have occurred (i) any general suspension of trading
     in, or limitation on prices for, securities on the Nasdaq National Market
     or the London, Montreal or Toronto Stock Exchanges (other than a shortening
     of trading hours or any coordinated trading halt triggered solely as a
     result of a specified increase or decrease in a market index), (ii) a
     declaration of a banking moratorium or any suspension of payments in
     respect of banks in the United States or Canada, (iii) any limitation
     (whether or not mandatory) by any government or Governmental Authority on
     the extension of credit by banks or other lending institutions, (iv) a
     commencement of a war or armed hostilities or other national or
     international calamity directly or indirectly involving the United States
     or Canada or (v) in the case of any of the foregoing existing on March 10,
     2000, a material acceleration or worsening thereof;

                                       28
   34

          (e) (i) it shall have been publicly disclosed, or Purchaser shall have
     otherwise learned, that beneficial ownership (determined for the purposes
     of this paragraph as set forth in Rule 13d-3 promulgated under the Exchange
     Act) of 15% or more of the then outstanding Shares has been acquired by any
     person, other than Parent or any of its affiliates, or (ii) (A) the Board,
     or any committee thereof, shall have withdrawn or modified, in a manner
     adverse to Parent or Purchaser the approval or recommendation of the Offer,
     the Merger, the Merger Agreement, or approved or recommended any
     Acquisition Proposal or any other acquisition of Shares other than the
     Offer, the Merger or (B) the Board, or any committee thereof, shall have
     resolved to do any of the foregoing;

          (f) any representation or warranty of the Company in the Merger
     Agreement that is qualified as to materiality or Material Adverse Effect
     shall not be true and correct or any such representation or warranty that
     is not so qualified shall not be true and correct in any material respect,
     in each case as if such representation or warranty was made as of such time
     on or after the date of the Merger Agreement;

          (g) the Company shall have failed to perform, in any material respect,
     any obligation or to comply, in any material respect, with any agreement or
     covenant of the Company to be performed or complied with by it under the
     Merger Agreement;

          (h) the Merger Agreement shall have been terminated in accordance with
     its terms; or

          (i) Purchaser and the Company shall have agreed that Purchaser shall
     terminate the Offer or postpone the acceptance for payment of Shares
     thereunder;

which, in the reasonable judgment of Purchaser in any such case, and regardless
of the circumstances (including any action or inaction by Parent or any of its
affiliates) giving rise to any such condition, makes it inadvisable to proceed
with such acceptance for payment.

     The foregoing conditions are for the sole benefit of Purchaser and Parent
and may be asserted by Purchaser or Parent regardless of the circumstances
giving rise to any such condition or, subject to the terms of the Merger
Agreement, may be waived by Purchaser or Parent in whole or in part at any time
and from time to time in their sole discretion. The failure by Parent or
Purchaser at any time to exercise any of the foregoing rights shall not be
deemed a waiver of any such right; the waiver of any such right with respect to
particular facts and other circumstances shall not be deemed a waiver with
respect to any other facts and circumstances; and each such right shall be
deemed an ongoing right that may be asserted at any time and from time to time.

15.  CERTAIN LEGAL MATTERS AND REGULATORY APPROVALS.

     General.  Based upon its examination of publicly available information with
respect to the Company and the review of certain information furnished by the
Company to Thomson and discussions between representatives of Thomson with
representatives of the Company during Thomson's investigation of the Company
(see Section 10), neither Purchaser nor Thomson is aware of (i) any license or
other regulatory permit that appears to be material to the business of the
Company or any of its subsidiaries, taken as a whole, which might be adversely
affected by the acquisition of Shares by Purchaser pursuant to the Offer or (ii)
except as set forth below, of any approval or other action by any domestic
(federal or state) or foreign Governmental Authority which would be required
prior to the acquisition of Shares by Purchaser pursuant to the Offer. Should
any such approval or other action be required, it is Purchaser's present
intention to seek such approval or action. Purchaser does not currently intend,
however, to delay the purchase of Shares tendered pursuant to the Offer pending
the outcome of any such action or the receipt of any such approval (subject to
Purchaser's right to decline to purchase Shares if any of the conditions in
Section 14 shall have occurred). There can be no assurance that any such
approval or other action, if needed, would be obtained without substantial
conditions or that adverse consequences might not result to the business of the
Company, Purchaser or Thomson or that certain parts of the businesses of the
Company, Purchaser or Thomson might not have to be disposed of or held separate
or other substantial conditions complied with in order to obtain such approval
or other action or in the event that such approval was not obtained or such
other action was not taken. Purchaser's obligation

                                       29
   35

under the Offer to accept for payment and pay for Shares is subject to certain
conditions, including conditions relating to the legal matters discussed in this
Section 15. See Section 14 for certain conditions of the Offer.

     State Takeover Laws.  The Company is incorporated under the laws of the
State of Missouri. In general, Section 351.459 of Missouri Law prevents an
"interested shareholder" (generally a person who owns or has the right to
acquire 20% or more of a corporation's outstanding voting stock, or an affiliate
or associate thereof) from engaging in a "business combination" (defined to
include mergers and certain other transactions) with a Missouri corporation for
a period of five years following the date such person became an interested
shareholder unless, among other things, prior to such date the board of
directors of the corporation approved either the business combination or the
transaction in which the interested shareholder became an interested
shareholder. On March 10, 2000, prior to the execution of the Merger Agreement ,
the Board by unanimous vote of all directors present at a meeting held on such
date, approved the Merger Agreement , determined that each of the Offer and the
Merger is fair to, and in the best interest of, the stockholders of the Company.
Accordingly, Section 351.459 is inapplicable to the Offer and the Merger.

     A number of other states have adopted laws and regulations applicable to
attempts to acquire securities of corporations which are incorporated, or have
substantial assets, stockholders, principal executive offices or principal
places of business, or whose business operations otherwise have substantial
economic effects, in such states. In Edgar v. MITE Corp., the Supreme Court of
the United States invalidated on constitutional grounds the Illinois Business
Takeover Statute, which, as a matter of state securities law, made takeovers of
corporations meeting certain requirements more difficult. However, in 1987 in
CTS Corp. v. Dynamics Corp. of America, the Supreme Court held that the State of
Indiana may, as a matter of corporate law and, in particular, with respect to
those aspects of corporate law concerning corporate governance, constitutionally
disqualify a potential acquiror from voting on the affairs of a target
corporation without the prior approval of the remaining stockholders. The state
law before the Supreme Court was by its terms applicable only to corporations
that had a substantial number of stockholders in the state and were incorporated
there.

     The Company, directly or through its subsidiaries, conducts business in a
number of states throughout the United States, some of which have enacted
takeover laws. Purchaser does not know whether any of these laws will, by their
terms, apply to the Offer or the Merger and has not complied with any such laws.
Should any person seek to apply any state takeover law, Purchaser will take such
action as then appears desirable, which may include challenging the validity or
applicability of any such statute in appropriate court proceedings. In the event
it is asserted that one or more state takeover laws is applicable to the Offer
or the Merger, and an appropriate court does not determine that it is
inapplicable or invalid as applied to the Offer, Purchaser might be required to
file certain information with, or receive approvals from, the relevant state
authorities. In addition, if enjoined, Purchaser might be unable to accept for
payment any Shares tendered pursuant to the Offer, or be delayed in continuing
or consummating the Offer, and the Merger. In such case, Purchaser may not be
obligated to accept for payment any Shares tendered. See Section 14.

     Antitrust.  Under the HSR Act and the rules that have been promulgated
thereunder by the FTC, certain acquisition transactions may not be consummated
unless certain information has been furnished to the Antitrust Division and the
FTC and certain waiting period requirements have been satisfied. The acquisition
of Shares by Purchaser pursuant to the Offer are subject to such requirements.
See Section 2.

     Pursuant to the HSR Act, on March 20, 2000, Thomson filed a Premerger
Notification and Report Form in connection with the purchase of Shares pursuant
to the Offer with the Antitrust Division and the FTC. Under the provisions of
the HSR Act applicable to the Offer, the purchase of Shares pursuant to the
Offer may not be consummated until the expiration of a 15-calendar day waiting
period following the filing by Thomson. Accordingly, the waiting period under
the HSR Act applicable to the purchase of Shares pursuant to the Offer will
expire at 11:59 p.m., New York City time, on April 4, 2000, unless such waiting
period is earlier terminated by the FTC and the Antitrust Division or extended
by a request from the FTC or the Antitrust Division for additional information
or documentary material prior to the expiration of the waiting period. Pursuant
to the HSR Act, Thomson has requested early termination of the waiting period
applicable to the Offer. There can be no assurance, however, that the 15-day HSR
Act waiting period will be terminated early. If either the FTC or the Antitrust
Division were to request additional information or documentary

                                       30
   36

material from Thomson with respect to the Offer, the waiting period with respect
to the Offer would expire at 11:59 p.m., New York City time, on the tenth
calendar day after the date of substantial compliance with such request.
Thereafter, the waiting period could be extended only by court order. If the
acquisition of Shares is delayed pursuant to a request by the FTC or the
Antitrust Division for additional information or documentary material pursuant
to the HSR Act, the Offer may, but need not, be extended and, in any event, the
purchase of and payment for Shares will be deferred until 10 days after the
request is substantially complied with, unless the waiting period is sooner
terminated by the FTC and the Antitrust Division. Only one extension of such
waiting period pursuant to a request for additional information is authorized by
the HSR Act and the rules promulgated thereunder, except by court order. Any
such extension of the waiting period will not give rise to any withdrawal rights
not otherwise provided for by applicable law. See Section 4. It is a condition
to the Offer that the waiting period applicable under the HSR Act to the Offer
expire or be terminated. See Section 2 and Section 14.

     The FTC and the Antitrust Division frequently scrutinize the legality under
the antitrust laws of transactions such as the proposed acquisition of Shares by
Purchaser pursuant to the Offer. At any time before or after the purchase of
Shares pursuant to the Offer by Purchaser, the FTC or the Antitrust Division
could take such action under the antitrust laws as it deems necessary or
desirable in the public interest, including seeking to enjoin the purchase of
Shares pursuant to the Offer or seeking the divestiture of Shares purchased by
Purchaser or the divestiture of substantial assets of Thomson, the Company or
their respective subsidiaries. Private parties and state attorneys general may
also bring legal action under federal or state antitrust laws under certain
circumstances. Based upon an examination of information available to Thomson
relating to the businesses in which Thomson, the Company and their respective
subsidiaries are engaged, Thomson and Purchaser believe that the Offer will not
violate the antitrust laws. Nevertheless, there can be no assurance that a
challenge to the Offer on antitrust grounds will not be made or, if such a
challenge is made, what the result would be. See Section 14 for certain
conditions to the Offer, including conditions with respect to litigation.

16.  FEES AND EXPENSES.

     Except as set forth below, Purchaser will not pay any fees or commissions
to any broker, dealer or other person for soliciting tenders of Shares pursuant
to the Offer.

     Purchaser and Thomson have retained Innisfree M&A Incorporated, as the
Information Agent, and ChaseMellon Shareholder Services L.L.C., as the
Depositary, in connection with the Offer. The Information Agent may contact
holders of Shares by mail, telephone, telex, telecopy, telegraph and personal
interview and may request banks, brokers, dealers and other nominee stockholders
to forward materials relating to the Offer to beneficial owners. As compensation
for acting as Information Agent in connection with the Offer, Innisfree M&A
Incorporated will be paid reasonable and customary compensation for its services
and will also be reimbursed for certain out-of-pocket expenses and may be
indemnified against certain liabilities and expenses in connection with the
Offer, including certain liabilities under the federal securities laws.

     Purchaser will pay the Depositary reasonable and customary compensation for
its services in connection with the Offer, plus reimbursement for out-of-pocket
expenses, and will indemnify the Depositary against certain liabilities and
expenses in connection therewith, including under federal securities laws.
Brokers, dealers, commercial banks and trust companies will be reimbursed by
Purchaser for customary handling and mailing expenses incurred by them in
forwarding material to their customers.

17.  MISCELLANEOUS.

     The Offer is being made solely by this Offer to Purchase and the related
Letter of Transmittal and is being made to holders of Shares. Purchaser is not
aware of any jurisdiction where the making of the Offer is prohibited by any
administrative or judicial action pursuant to any valid state statute. If
Purchaser becomes aware of any valid state statute prohibiting the making of the
Offer or the acceptance of Shares pursuant thereto, Purchaser will make a good
faith effort to comply with any such state statute. If, after such good faith
effort, Purchaser cannot comply with any such state statute, the Offer will not
be made to (nor will tenders be

                                       31
   37

accepted from or on behalf of) the holders of Shares in such state. In any
jurisdiction where the securities, blue sky or other laws require the Offer to
be made by a licensed broker or dealer, the Offer shall be deemed to be made on
behalf of Purchaser by one or more registered brokers or dealers licensed under
the laws of such jurisdiction.

     NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR MAKE ANY
REPRESENTATION ON BEHALF OF PURCHASER OR THE COMPANY NOT CONTAINED IN THIS OFFER
TO PURCHASE OR IN THE LETTER OF TRANSMITTAL, AND IF GIVEN OR MADE, SUCH
INFORMATION OR REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED.

     Pursuant to Rule 14d-3 of the General Rules and Regulations under the
Exchange Act, Thomson and Purchaser have filed with the Commission the Schedule
TO, together with exhibits, furnishing certain additional information with
respect to the Offer. The Schedule TO and any amendments thereto, including
exhibits, may be inspected at, and copies may be obtained from, the same places
and in the same manner as set forth in Section 7 (except that they will not be
available at the regional offices of the Commission).

                                               WTI ACQUISITION CORPORATION

Dated: March 22, 2000

                                       32
   38

                                                                      SCHEDULE I

               INFORMATION CONCERNING THE DIRECTORS AND EXECUTIVE
                       OFFICERS OF THOMSON AND PURCHASER

     1.  DIRECTORS AND EXECUTIVE OFFICERS OF THOMSON.  The following table sets
forth the name, current business address, citizenship and present principal
occupation or employment, and material occupations, positions, offices or
employments and business addresses thereof for the past five years of each
director and executive officer of Thomson. Except for W. Michael Brown, who is a
citizen of both Great Britain and the United States, Alan M. Lewis, who is a
citizen of Canada, Great Britain and South Africa, Paul Brett, David J. Hulland
and Martin B. Jones who are citizens of Great Britain, Richard J. Harrington,
Vance K. Opperman, Steven A. Denning, David H. Shaffer, Robert Daleo, Theron S.
Hoffman and Brian H. Hall, Patrick J. Tierney, Ronald H. Schlosser and Robert S.
Christie who are citizens of the United States, and Stuart M. Garner who is a
citizen of Great Britain, each such person is a citizen of Canada. Unless
otherwise indicated, each occupation set forth opposite an individual's name
refers to employment with Thomson.



                                                      PRESENT PRINCIPAL OCCUPATION OR
                                                    EMPLOYMENT; MATERIAL POSITIONS HELD
                NAME, AGE AND                          DURING THE PAST FIVE YEARS AND
           CURRENT BUSINESS ADDRESS                      BUSINESS ADDRESSES THEREOF
           ------------------------                 -----------------------------------
                                            
Kenneth R. Thomson, 74                         Chairman of Thomson since July 1978. Director
The Woodbridge Company Limited                 of Thomson since July 1976. Chairman of the
65 Queen Street West                           Woodbridge Company Limited, 65 Queen Street
Toronto, Ontario M5H 2M8                       West, Toronto, Ontario, M5H 2M8, Canada, since
Canada                                         March 1979. Director of the Woodbridge Company
                                               Limited since August 1956.

John A. Tory, 67                               Deputy Chairman of Thomson from February 1978
The Woodbridge Company Limited                 to December 31, 1997. Director of Thomson
65 Queen Street West                           since February 1978. Director of Abitibi
Toronto, Ontario M5H 2M8                       Consolidated, Inc., 207 Queens Quay West,
Canada                                         Toronto, Ontario, M5J 2P5, Canada, since
                                               September 1965. Director of Rogers
                                               Communications Inc., 40 King Street West,
                                               Toronto, Ontario, M5H 3Y2, Canada, since
                                               December 1979. Director, Sun Life Insurance
                                               Company of Canada, 150 King Street West,
                                               Toronto, Ontario, M5H 1J9, Canada, from
                                               December 1971 to 1994. Director and President
                                               of the Woodbridge Company Limited, 65 Queen
                                               Street West, Toronto, Ontario, M5H 2M8,
                                               Canada, since October 1967 and March 1979,
                                               respectively. Director of Hudson's Bay
                                               Company, 401 Bay Street, Toronto, Ontario M5H
                                               2Y4, Canada, since May 1979. Deputy Chairman
                                               and Director of Markborough Properties Inc.,
                                               One Dundas Street West, Suite 2800, Toronto,
                                               Ontario M5G 2J2, since September 1989.
                                               Director of The Thomson Corporation PLC, First
                                               Floor, the Quandrangle, 180 Wardour Street,
                                               London W1A 4YG, England, since December 1977.
                                               Director of the Royal Bank of Canada, 200 King
                                               Street West, Toronto, Ontario M5H 1CA, Canada,
                                               since March 1971.


                                       I-1
   39



                                                      PRESENT PRINCIPAL OCCUPATION OR
                                                    EMPLOYMENT; MATERIAL POSITIONS HELD
                NAME, AGE AND                          DURING THE PAST FIVE YEARS AND
           CURRENT BUSINESS ADDRESS                      BUSINESS ADDRESSES THEREOF
           ------------------------                 -----------------------------------
                                            
Ronald D. Barbaro, 68                          Director of Thomson since May 1993. Director,
Clairvest Group Inc.                           Clairvest Group Inc., Suite 1700 -- 22 St.
Suite 1700                                     Clair Avenue East, Toronto, Ontario, M4V 2S3,
22 St. Clair Avenue East                       Canada, since September 1994. Director of
Toronto, Ontario M4V 2S3                       Equifax Canada, 7171 Jean Talon East, Anjou,
                                               Quebec, H1M3N2, Canada, since June 1997.
                                               Director of ChoicePoint, Inc., 1000 Alderman
                                               Drive, Alpharetta, Georgia 30005, since July
                                               1997. Director of Prudential of America Life
                                               Insurance Company of Canada ("PALI"), c/o
                                               Prudential of America Insurance Co. (Canada),
                                               200 Consilium Place, Scarborough, Ontario, M1H
                                               3E6, Canada, since January 1991. Chairman of
                                               PALI from 1992 to January 1997. President of
                                               Prudential Insurance Company of America, Inc.,
                                               260 Madison Avenue, Second Floor, New York,
                                               New York 10116, from 1990 to 1993. President
                                               of Worldwide Operations Prudential Insurance
                                               Company of America-Canada, from 1985 to 1990.
                                               Director of Equifax Inc., 1600 Peachtree
                                               Street, N.W., Atlanta, Georgia 30309, from
                                               April 1992 to July 1997. Director, Canbra
                                               Foods Ltd., P.O. Box 99, 2415 2nd Avenue "A"
                                               North, Lethbridge, Alberta, T1J 3Y4, Canada,
                                               since July 1988; interim -- Chairman since
                                               March 1996; Chairman since March 1997.
                                               Director, Consoltex Group Inc., 8555
                                               TransCanada Highway, Ville Saint-Laurent,
                                               Quebec, H4S 1Z6, Canada, since May 1997.
                                               Director, Flow International Corporation,
                                               2300 -- 64th Avenue South, Kent, Washington
                                               98032, since 1995. Chairman, Natraceuticals
                                               Inc., 8290 Woodbine Avenue, Markham, Ontario,
                                               L3R 9W9, Canada, since February 1997.
                                               Director, Signature Security Group Inc., 26-28
                                               Market Street, Sydney, NSW, Australia, since
                                               March 1997. Director, VoxCom Incorporated,
                                               #102,4209 -- 99 Street, Edmonton, Alberta, T6E
                                               5V7, Canada, since December 1996. Director,
                                               O'Donnell Investment Management Corp., 4100
                                               Yonge Street, Suite 601, Toronto, Ontario, M2P
                                               2B5, Canada, since April 1997.

W. Geoffrey Beattie, 40                        Director of Thomson since May 1998. President,
Torys                                          The Woodbridge Company Limited since 1998.
Suite 3000, Maritime Life Tower                From 1990 to 1998, attorney (partner from
P.O. Box 270, Toronto Dominion Center          1993) at Torys (formerly Tory, Tory,
79 Wellington Street West                      DesLauriers & Binnington).
Toronto, Canada M5K 1N2

W. Michael Brown, 64                           Director of Thomson since July 1978. Deputy
The Thomson Corporation                        Chairman of Thomson since October 1997.
Metro Center One Station Place                 President of Thomson from December 1984 to
Stamford, Connecticut 06902                    October 1997. Director of Hudson's Bay
                                               Company, 401 Bay Street, Toronto, Ontario, M5H
                                               2Y4, Canada, since 1985. Director of
                                               Southwestern Area Commerce and Industry
                                               Association, One Landmark Square, Stamford,
                                               Connecticut 06901, from November 1994 to July
                                               1997. Director of Markborough Properties Inc.,
                                               One Dundas Street West, Suite 2800, Toronto,
                                               Ontario, M5H 2Y4, Canada, April 1990 to June
                                               1997.


                                       I-2
   40



                                                      PRESENT PRINCIPAL OCCUPATION OR
                                                    EMPLOYMENT; MATERIAL POSITIONS HELD
                NAME, AGE AND                          DURING THE PAST FIVE YEARS AND
           CURRENT BUSINESS ADDRESS                      BUSINESS ADDRESSES THEREOF
           ------------------------                 -----------------------------------
                                            
V. Maureen Kempston Darkes, 51                 Director of Thomson since May 1996. President
General Motors of Canada Limited               and General Manager, General Motors of Canada
1908 Colonel Sam Drive                         Limited ("GMCL"), 1908 Colonel Sam Drive,
Oshawa, Ontario L1H8T7                         Oshawa, Ontario L1H8T7. Director of GMCL since
                                               August 1991. Vice President of GMCL from
                                               August 1991 to July 1994. Director, CN Rail,
                                               935 de la Gauchetiere Street West, Montreal,
                                               Quebec, Canada since March 1995. Director of
                                               Noranda, Inc., 181 Bay Street, Suite 1400,
                                               Toronto, Ontario, Canada since January 1998.

Steven A. Denning, 51                          Director of Thomson since January 24, 2000.
General Atlantic Partners LLC                  Mr. Denning is currently a Managing Partner of
3 Pickwick Plaza                               General Atlantic Partners, a private
Greenwich, CT 06830                            investment company. Prior to joining General
                                               Atlantic, Mr. Denning was a consultant with
                                               McKinsey & Co. Mr. Denning is also a director
                                               of Exult, Inc. and GT Interactive Software
                                               Corporation.

William J. DesLauriers, 69                     Director of Thomson since July 1978. Partner
Torys                                          in Torys (formerly Tory, Tory, DesLauriers &
Maritime Life Tower, Suite 3000                Binnington), Suite 3000, Aetna Tower, P.O. Box
P.O. Box 270,                                  270, Toronto-Dominion Centre, Toronto, Ontario
Toronto Dominion Centre                        M5K 1N2, Canada, since July 1963.
Toronto, Ontario M5K 1N2
Canada

John F. Fraser, 69                             Director of Thomson since June 1989. Chairman
Russel Metals, Inc.                            of Air Canada, 355 Portage Avenue, Room 500,
Suite 600 One Lombard Place                    Winnipeg, Manitoba, Canada R3B 2C3 since
Winnipeg, Manitoba R3B OX3                     August 1996. Director of Air Canada since
Canada                                         1989. Vice Chairman of Russel Metals, Inc.,
                                               Suite 600, One Lombard Place, Winnipeg,
                                               Manitoba, R3B OX3, Canada, since May 1995.
                                               Chairman of Russel Metals, Inc. from May 1992
                                               to May 1995. Chairman and Chief Executive
                                               Officer of Russel Metals, Inc. from May 1991
                                               to May 1992. President and Chief Executive
                                               Officer of Russel Metals, Inc. from May 1978
                                               to May 1991. Director, America West Airlines,
                                               Inc., 4000 East Sky Harbor Boulevard, Phoenix,
                                               Arizona 85034, since August 1994. Director,
                                               Bank of Montreal, First Bank Tower, First
                                               Canadian Place, Toronto, Ontario, M5X1A1,
                                               Canada, since January 1985. Director, Centra
                                               Gas Manitoba Inc., 444 St. Mary Avenue,
                                               Winnipeg, Manitoba, R3C 3T7, Canada, since
                                               February 1985. Director, International Comfort
                                               Products Corporation, 501 Corporate Centre
                                               Drive, Suite 200, Franklin, TN 37067, from May
                                               1985 to April 1990 and June 1992 to present.
                                               Director, Manitoba Telecom, Services, Inc.,
                                               489 Empress Street, Winnipeg, Manitoba, R3C
                                               3V6, Canada, since May 1997. Director, Shell
                                               Canada Limited, 400 -- 4th Avenue S.W.,
                                               Calgary, Alberta, T2P 0J4, Canada, since April
                                               1990.


                                       I-3
   41



                                                      PRESENT PRINCIPAL OCCUPATION OR
                                                    EMPLOYMENT; MATERIAL POSITIONS HELD
                NAME, AGE AND                          DURING THE PAST FIVE YEARS AND
           CURRENT BUSINESS ADDRESS                      BUSINESS ADDRESSES THEREOF
           ------------------------                 -----------------------------------
                                            
Richard J. Harrington, 53                      Director of Thomson since September 1993.
The Thomson Corporation                        President and CEO of Thomson since October
Metro Center                                   1997. Executive Vice-President of Thomson
One Station Place                              September 1993 to October 1997. President and
Stamford, Connecticut 06902                    Chief Executive Officer, Thomson Newspapers
                                               Group, Metro Center, One Station Place,
                                               Stamford, Connecticut 06902, July 1993 to
                                               October 1997. President and Chief Executive
                                               Officer, Thomson Professional Publishing,
                                               Metro Center, One Station Place, Stamford,
                                               Connecticut 06902, from June 1989 to July
                                               1993.

Roger L. Martin, 43                            Director of Thomson since September 17, 1999.
Rotman School of Management                    Dean of the Joseph L. Rotman School of
105 St. George Street                          Management at the University of Toronto.
Toronto, Ontario                               Previously a director of Monitor Company since
Canada M5S 3E6                                 1985. Co-head of the Monitor Company in 1995
                                               and 1996. Founding chair of Monitor
                                               University, the Monitor's educational arm. Mr.
                                               Martin is also director of Celestica Inc.

C. Edward Medland, 71                          Director of Thomson since July 1978. President
Beauwood Investments, Inc.                     of Beauwood Investments, Inc., 121 King Street
121 King Street West, Suite 2525               West, Suite 2525, Toronto, Ontario, M5H 3T9,
Toronto, Ontario                               Canada, since July 1988. Director of The
M5H 3T9                                        Seagram Company, 1430 Peel Street, Montreal,
Canada                                         Quebec, H3A 1S9, Canada, since November 1973.
                                               Director of Abitibi Consolidated Inc., 800
                                               Boulevard Rene Levesque West, Montreal,
                                               Quebec, H3B 1Y9, Canada, since April 1978.
                                               Director of Teleglobe, Inc., 1000 de la
                                               Gauchetiere Street West, Suite 1500, Montreal,
                                               Quebec, H3B 4X5, Canada, since May 1992.
                                               Director of Canada Trust Financial Services,
                                               Inc., Canada Trust Tower, 161 Bay Street,
                                               Toronto, Ontario, M5J 2S1, Canada, since March
                                               1989. Director of Premium Income Corporation,
                                               121 King Street West, 26th Floor, Toronto,
                                               Ontario, M5H 3T9, Canada, since October 1996.
                                               Chairman of Ontario Teachers' Pension Plan
                                               Board ("OTPPB"), 5650 Yonge Street, Toronto,
                                               Ontario M2M 4H5, Canada, since January 1996.
                                               Director of OTPPB since January 1990. Director
                                               of Quorum Growth, Inc., Sun Life Tower, 150
                                               King Street West, Toronto, Ontario, M5H 1J9,
                                               Canada, from October 1992 to February 1996.
                                               Director of Canadian Tire Corporation, 2180
                                               Yonge Street, Toronto, Ontario, M3S 2B9,
                                               Canada, from May 1988 to May 1996.


                                       I-4
   42



                                                      PRESENT PRINCIPAL OCCUPATION OR
                                                    EMPLOYMENT; MATERIAL POSITIONS HELD
                NAME, AGE AND                          DURING THE PAST FIVE YEARS AND
           CURRENT BUSINESS ADDRESS                      BUSINESS ADDRESSES THEREOF
           ------------------------                 -----------------------------------
                                            
Vance K. Opperman, 56                          Director of Thomson since September 1996.
Key Investments Inc.                           President and CEO of Key Investments Inc., 601
601 Second Avenue South                        Second Avenue South, Suite 5200, Minneapolis,
Suite 5200                                     MN 55402, since October 1996. Director; Chief
Minneapolis, MN 55402                          Executive Officer and General Counsel, MSP
                                               Communications, Inc. (magazine publisher)
                                               since December 1996. President and Chief
                                               Operating Officer of West Publishing Company
                                               ("West") between 1993 and 1996. General
                                               Counsel of West prior to 1993. Served on
                                               West's Board of Directors from 1992 to 1996.

David H Shaffer, 57                            Director of Thomson since August 6, 1998.
The Thomson Corporation                        Chief Operating Officer of Thomson. Executive
Metro Center                                   Vice President since May, 1998. Formerly
One Station Place                              Chairman of the Board and Chief Executive
Stamford, CT 06902                             Officer of Jostens Learning Corporation,
                                               President of Dun & Bradstreet's Official
                                               Airline Guides, Inc. (OAG) and Vice Chairman
                                               of Thomas Cook Travel Inc. President and Chief
                                               Executive Officer of Macmillan Inc., and
                                               Chairman of OAG. Member of Maxwell
                                               Communications Corporation PLC (MCC) board of
                                               directors. Currently chairman of the board of
                                               T&S Incorporated. Board member and publisher
                                               of The Black Book Group, member of the
                                               Advisory Board of Kellogg Graduate School of
                                               Management at Northwestern University, and
                                               trustee of the La Jolla Country Day School.

David K.R. Thomson, 42                         Director of Thomson since April 1988. Deputy
The Woodbridge Company Limited                 Chairman of the Woodbridge Company Limited, 65
65 Queen Street West                           Queen Street West, Toronto, Ontario, M5H 2M8,
Toronto, Ontario M5H 2M8                       Canada, since June 1990.
Canada

Richard M. Thomson, 66                         Director of Thomson since October 1984.
Toronto-Dominion Bank                          Chairman and Chief Executive Officer of the
Toronto-Dominion Bank Tower, 11th Floor        Toronto Dominion Bank, 11th Floor,
Toronto, Ontario M5K 1A2                       Toronto-Dominion Bank Tower, Toronto, Ontario
Canada                                         M5K 1A2, Canada, since May 1978.

Peter J. Thomson, 34                           Director of Thomson since January 1995. Deputy
The Woodbridge Company Limited                 Chairman of The Woodbridge Company Limited, 65
65 Queen Street West                           Queen Street West, Toronto, M5H 2M8, Canada,
Toronto M5H 2M8                                since November 1993.
Canada

David J. Hulland, 49                           Vice-President of Thomson since May 1993.
The Thomson Corporation                        Group Controller of Thomson since December
Metro Center                                   1984.
One Station Place
Stamford, CT 06902

Martin B. Jones, 48                            Vice President of Thomson since May 1993.
The Thomson Corporation                        Group Treasurer of Thomson since December
The Quadrangle, First Floor                    1984.
180 Wardour Street
London WIA 4YG
England


                                       I-5
   43



                                                      PRESENT PRINCIPAL OCCUPATION OR
                                                    EMPLOYMENT; MATERIAL POSITIONS HELD
                NAME, AGE AND                          DURING THE PAST FIVE YEARS AND
           CURRENT BUSINESS ADDRESS                      BUSINESS ADDRESSES THEREOF
           ------------------------                 -----------------------------------
                                            
Alan M. Lewis, 62                              Treasurer of Thomson since May 1979.
The Thomson Corporation
Toronto Dominion Bank Tower
Toronto Dominion Center, Suite 2706
P.O. Box 24
Toronto, Ontario M5K 1A2
Canada

Robert Daleo, 51                               Chief Financial Officer of Thomson since May,
The Thomson Corporation                        1999. Executive Vice-President; Finance and
Metro Center                                   Business Development of Thomson since November
One Station Place                              1997. Senior Vice President, Finance and
Stamford, CT 06902                             Business Development of Thomson from January
                                               1997 to October 1997. Senior Vice President
                                               and Chief Operating Officer, Thomson
                                               Newspapers, One Station Place, Metro Center,
                                               Stamford, CT 06902, from January 1996 to
                                               December 1997. Senior Vice President and Chief
                                               Financial Officer, Thomson Newspapers, from
                                               December 1994 to December 1995. Senior Vice
                                               President and General Manager, Sweets Group,
                                               McGraw-Hill Company, 1221 Avenue of the
                                               Americas, New York, New York 10020, until
                                               November 1994.

Michael S. Harris, 50                          Senior Vice President, General Counsel and
The Thomson Corporation                        Secretary of Thomson since May, 1998. Vice
Metro Center                                   President and General Counsel of Thomson
One Station Place                              Holdings, Inc. ("THI"), Metro Center, One
Stamford, CT 06902                             Station Place, Stamford, CT 06902, since June
                                               1993. Assistant Secretary and Assistant
                                               General Counsel of THI from May 1989 to June
                                               1993. Vice President, Secretary and Director
                                               of Purchaser since March 2000.

Theron S. Hoffman, 52                          Executive Vice President, Human Resources
The Thomson Corporation                        since May, 1998. Formerly Senior
Metro Center                                   Vice-President of Human Resources and Services
One Station Place                              for General Reinsurance Corporation for seven
Stamford, CT 06902                             years. Trustee of the Yale-China Association.

Joseph J.G.M. Vermeer, 53                      Vice-President; Director of Taxes of Thomson
The Thomson Corporation                        since January 1995. Partner in Peat Marwick
Metro Center                                   Thorne, 40 King Street West, Toronto, Ontario,
One Station Place                              Canada, from 1977 to December 31, 1994.
Stamford, CT 06902

Brian H. Hall, 52                              President and Chief Executive Officer, West
The Thomson Corporation                        Group since 1996. President and Chief
Metro Center                                   Executive Officer, Thomson Legal and
One Station Place                              Regulatory Group since 1996. Formerly
Stamford, CT 06902                             President and Chief Executive Officer of
                                               Thomson Legal Publishing 1995-1996.


Patrick J. Tierney, 55                         President and Chief Executive Officer of
The Thomson Corporation                        Thomson Financial. Formerly President and
Metro Center                                   Chief Executive Officer of Thomson's
One Station Place                              Reference, Scientific and Healthcare group.
Stamford, CT 06902                             Prior to joining Thomson, President and Chief
                                               Executive Officer of Knight-Ridder Financial.



                                       I-6
   44



                                                      PRESENT PRINCIPAL OCCUPATION OR
                                                    EMPLOYMENT; MATERIAL POSITIONS HELD
                NAME, AGE AND                          DURING THE PAST FIVE YEARS AND
           CURRENT BUSINESS ADDRESS                      BUSINESS ADDRESSES THEREOF
           ------------------------                 -----------------------------------
                                            
Ronald H. Schlosser, 51                        President and Chief Executive Officer of
The Thomson Corporation                        Thomson's Reference, Scientific and Healthcare
Metro Center                                   group.
One Station Place
Stamford, CT 06902

Robert S. Christie, 46                         President and Chief Executive
The Thomson Corporation                        Officer -- Thomson Learning Group.
Metro Center
One Station Place
Stamford, CT 06902

Stuart M. Garner, 55                           President and Chief Executive
The Thomson Corporation                        Officer -- Thomson Newspapers since 1994.
Metro Center
One Station Place
Stamford, CT 06902


     2.  DIRECTORS AND EXECUTIVE OFFICERS OF PURCHASER.  The following table
sets forth the name, age, current business address, citizenship and present
principal occupation or employment, and material occupations, positions, offices
or employments and business addresses thereof for the past five years of each
director and executive officer of Purchaser. Michael S. Harris and Eric Shuman
are citizens of the United States. Unless otherwise indicated, the current
business address of each person is WTI Acquisition Corporation, Metro Center,
One Station Place, Stamford, Connecticut 06902. Each occupation set forth
opposite an individual's name, refers to employment with Purchaser.



                                                      PRESENT PRINCIPAL OCCUPATION OR
                                                    EMPLOYMENT; MATERIAL POSITIONS HELD
                NAME, AGE AND                          DURING THE PAST FIVE YEARS AND
           CURRENT BUSINESS ADDRESS                      BUSINESS ADDRESSES THEREOF
           ------------------------                 -----------------------------------
                                            

Michael S. Harris, 50                          Vice President, Secretary and Director of
The Thomson Corporation                        Purchaser since March 2000. Senior Vice
Metro Center                                   President, General Counsel and Secretary of
One Station Place                              Thomson since May, 1998. Vice President and
Stamford, CT 06902                             General Counsel of Thomson Holdings, Inc.
                                               ("THI"), Metro Center, One Station Place,
                                               Stamford, CT 06902, since June 1993. Assistant
                                               Secretary and Assistant General Counsel of THI
                                               from May 1989 to June 1993.

Eric Shuman, 45                                President, Treasurer and Director of Purchaser
The Thomson Corporation                        since March, 2000. Senior Vice President and
Metro Center                                   Chief Financial Officer of Thomson Learning, a
One Station Place                              division of Thomson. Formerly Senior Vice
Stamford, CT 06902                             President and Chief Financial Officer of
                                               Thomson Newspapers from 1995 to 1998. Vice
                                               President and Corporate Controller of Thomson
                                               Newspapers from 1994 to 1995.


                                       I-7
   45

                                                                     SCHEDULE II

              ADDITIONAL INFORMATION PURSUANT TO SECTION 14(F) OF
                      THE SECURITIES EXCHANGE ACT OF 1934
                           AND RULE 14F-1 THEREUNDER

     This information is being furnished in connection with the possible
designation by Purchaser, pursuant to the Merger Agreement, of persons to be
elected to the Board of Directors of the Company (the "Board") other than at a
meeting of the Company's stockholders.

     The Merger Agreement provides that, promptly upon the purchase by Purchaser
of Shares pursuant to the Offer, and from time to time thereafter, Purchaser
shall be entitled to designate up to such number of directors, rounded up to the
next whole number, on the Board as shall give Purchaser representation on the
Board equal to the product of the total number of directors on such Board
(giving effect to the directors elected pursuant to this sentence) multiplied by
the percentage that the aggregate number of Shares beneficially owned by
Purchaser or any affiliate of Purchaser following such purchase bears to the
total number of Shares then outstanding, and the Company shall, at such time,
promptly take all actions necessary to cause Purchaser's designees to be elected
as directors of the Company, including increasing the size of the Board or
securing the resignations of incumbent directors, or both. The Merger Agreement
also provides that, at such times, the Company shall use its reasonable best
efforts to cause persons designated by Purchaser to constitute the same
percentage as persons designated by Purchaser shall constitute of the Board of
(i) each committee of the Board, (ii) each board of directors of each
Subsidiary, and (iii) each committee of each such board, in each case only to
the extent permitted by applicable law. Until the Effective Time, the Company
has agreed to use its reasonable best efforts to ensure that at least two
members of the Board and each committee of the Board and such boards and
committees of the subsidiaries of the Company as of the date of the Merger
Agreement, who are not employees of the Company shall remain members of the
Board and of such boards and committees.

     Purchaser currently intends to designate one or more persons listed in
Schedule I to the Offer to Purchase as directors of the Company. The individuals
so designated to serve on the Board shall be referred to hereafter as the
"Purchaser's Designees".

     The information concerning the Company contained in this Schedule II has
been furnished by the Company or has been taken from or based upon publicly
available documents and records on file with the Commission and other public
sources including the Company's Proxy Statement dated August 9, 1999 for the
Annual Meeting of Stockholders held on September 8, 1999 (the "Proxy Statement")
and the Company's Annual Report on Form 10-K for the fiscal year ended April 30,
1999. Neither Purchaser nor Thomson takes responsibility for the accuracy or
completeness of the information concerning the Company furnished by the Company
or contained in such documents and records or for any failure by the Company to
disclose events which may have occurred or may affect the significance or
accuracy of any such information.

COMPANY COMMON STOCK

     The Company has shares of one class of common stock outstanding, par value
$0.50, and no shares of preferred stock. On March 10, 2000, there were
outstanding and entitled to vote 4,265,845 shares of common stock. Shareholders
are entitled to one vote, exercisable in person or by proxy, for each share of
common stock held on the record date. The holders of a majority of the
outstanding shares of common stock entitled to vote at the meeting constitute a
quorum.

                                      II-1
   46

SECURITY OWNERSHIP BY BENEFICIAL OWNERS OF MORE THAN 5%

     The following table sets forth the most recent information with respect to
the shares of Common Stock beneficially owned by the stockholders known to the
Company to own more than 5% of the outstanding shares of such class.



NAME AND ADDRESS OF BENEFICIAL OWNER                          NUMBER     PERCENT
- ------------------------------------                          -------    -------
                                                                   
Kenneth W. Kousky                                             386,464(1)   9.0%
10845 Olive Boulevard, Suite 250, St. Louis, MO 63141

Ryback Management Corporation                                 262,500(2)   6.2%
7711 Carondelet Avenue
Box 16900, St. Louis, MO 63105


- ---------------
(1) Based on information as of December 31, 1999, furnished to the Company in
    Amendment No. 5 to a Schedule 13G filed February 14, 2000. Includes options
    to purchase 14,000 shares of common stock and 9,300 shares held in a
    charitable foundation over which Mr. Kousky exercises voting and dispositive
    control. Does not include 137,500 Shares subject to options, which will not
    vest in 60 days.

(2) Based on information furnished to the Company in a Schedule 13G filed
    January 23, 1998. Ryback Management did not file a Schedule 13G in 1999.

                  SECURITY OWNERSHIP BY OFFICERS AND DIRECTORS

     The following table sets forth certain information with respect to the
shares of Common Stock beneficially owned by each of the Company's directors and
executive officers.



NAME AND ADDRESS OF BENEFICIAL OWNER                          NUMBER     PERCENT
- ------------------------------------                          -------    -------
                                                                   
Kenneth W. Kousky                                             386,464(1)   9.0%
10845 Olive Boulevard, Suite 250, St. Louis, MO 63141

Raymond J. Kalinowski                                           3,500(3)     *
10401 Clayton Road, St. Louis, MO 63131

David W. Kemper                                               192,500      4.5%
8000 Forsyth, St. Louis, MO 63105

Robert E. Lefton, Ph.D.                                         3,000(3)     *
8112 Maryland Avenue, St. Louis, MO 63105

William Rosenthal                                               1,000        *
130 Barrow Street, #514, New York, NY 10014

Walter N. Torous                                                5,500(3)     *
Anderson School of Graduate Management
University of California, Los Angeles
Los Angeles, CA 90024

J. Michael Bowles                                              13,000(2)     *
10845 Olive Boulevard, Suite 250, St. Louis, MO 63141

John A. Kirkham                                               121,600(5)   2.8%
Thames Link House
1 Church Road, Richmond, Surrey TW92QR England

Harvey L. Leemon                                                   --       --
10845 Olive Boulevard, Suite 250, St. Louis, MO 63141

All directors and executive officers as a group (9
  individuals)                                                726,564(6)  16.7%


- ---------------
* Less than 1%

(1) Based on information as of December 31, 1999, furnished to the Company in
    Amendment No. 5 to a Schedule 13G filed February 14, 2000. Includes options
    to purchase 14,000 shares of common stock and

                                      II-2
   47

9,300 shares held in a charitable foundation over which Mr. Kousky exercises
voting and dispositive control. Does not include 137,500 Shares subject to
options, which will not vest in 60 days.

(2) Represents options to purchase shares of common stock.

(3) Includes options to purchase 2,500 shares of common stock.

(4) Includes options to purchase 2,500 shares of common stock, 20,000 shares
    held in a trust of which Mr. Kemper is a co-trustee, and 170,000 shares
    owned by Commerce Bancshares, Inc. of which Mr. Kemper is Chairman and Chief
    Executive Officer.

(5) Includes options to purchase 55,500 shares of common stock.

(6) Includes options to purchase 55,000 shares of common stock.

                DIRECTORS AND EXECUTIVE OFFICERS OF THE COMPANY.

     The following table sets forth certain information with respect to the
Company's directors and executive officers:



NAME                        AGE                  POSITION                   TERM EXPIRES
- ----                        ---    -------------------------------------    ------------
                                                                   
Kenneth W. Kousky.........   45    Chairman of the Board, President and         2000
                                   Chief Executive Officer
Raymond J. Kalinowski.....   70    Director                                     2002
David W. Kemper...........   48    Director                                     2000
Robert E. Lefton..........   67    Director                                     2001
William Rosenthal.........  N/A    Director                                     2002
Walter N. Torous..........   47    Director                                     2000
J. Michael Bowles.........   55    Chief Financial Officer                       N/A
John A. Kirkham...........   55    Executive Vice                                N/A
                                   President-International Sales and
                                   Operations
Harvey L. Leemon..........   54    Vice President of Development                 N/A


     Kenneth W. Kousky is a founder of the Company and has served as Chairman of
the Board of Directors since 1988. In 1991, he became the Company's President
and Chief Executive Officer. Between 1988 and 1990, Mr. Kousky headed the
Washington University Center for Communications and Network Management and its
graduate program in telecommunications.

     Raymond J. Kalinowski has served as a director of the Company since
November 1994. He was Vice Chairman of A.G. Edwards & Sons, Incorporated for
forty years. Since 1990, he has been an independent consultant. Mr. Kalinowski
serves as trustee of a number of mutual funds affiliated with the Centennial,
Panorama and Oppenheimer Group Funds. Mr. Kalinowski currently serves on the
Board of Directors for Isto Technologies, Inc, and Catholic Charities -- St.
Louis.

     David W. Kemper has served as a director of the Company since November
1994. He is Chief Executive Officer of Commerce Bancshares, Inc. and Commerce
Bank of St. Louis. He has held this position since July 1978. Mr. Kemper serves
as a director of Seafield Capital Corporation, Tower Properties Company and
Ralcorp Holdings, Inc.

     Robert E. Lefton has served as a director of the Company since September
1995. He has been President and Chief Executive Officer of Psychological
Associates, Inc., a management and organizational consulting firm, since 1958.
He serves as a director of Stifel Financial Corp. and Allied Health Care
Products.

     William Rosenthal has been a co-founder of the global computer publishing
business Logical Operations, which became part of the Ziff-Davis Training and
Support Publishing Group after being purchased in 1991. Rosenthal was named
President of the Group and an officer of Ziff-Davis, Inc. In 1997 he was
appointed President of Ziff-Davis Education. Rosenthal has recently joined
Kaplan Education as President of Kaplan.com, where he will be responsible for
the continued development of Kaplan's Internet products and services.

                                      II-3
   48

     Walter N. Torous has served as a director of the Company since May 1994. He
has been a professor of finance at the Anderson Graduate School of Management of
the University of California, Los Angeles since 1985.

     J. Michael Bowles joined the Company as Chief Financial Officer in August
1995. Prior to that time, he was associated with Unibased Systems Architecture,
Inc. in St. Louis, Missouri, a software development company where he was Chief
Financial Officer from 1994 to 1995 and Director of Professional Services from
1992 to 1994.

     John A. Kirkham has served as the Executive Vice President-International
Operations for the Company since August 1994. Prior to that time, he served as
the Vice President of International Operations for NETG, a technology training
company, in London, from 1987 through 1994. Mr. Kirkham serves as a Director for
West London T.E.C. and Performance Support International (UK) Ltd.

     Harvey L. Leemon joined the Company as Vice President of Development in
November of 1998. Prior to that time, he was Software Engineering in Center
Operations, HCIA, Inc., in Ann Arbor, Michigan where he was Associate Vice
President from 1986 through 1998.

                CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.

     In August of 1995, the Company entered into a loan agreement with Commerce
Bank-St. Louis (the "Bank"), with a current line of credit of $3,500,000. The
borrowings bear interest at the prime rate, and are collateralized by accounts
receivable and property and equipment of the Company. David Kemper, a member of
the Company's Board of Directors, is the president of the Bank and its parent
holding company.

EXECUTIVE COMPENSATION.

     Introduction.  The Compensation Committee (the "Committee") of the
Company's board of directors is composed of three non-employee directors. The
Committee oversees the Company's executive compensation program and is
specifically responsible for evaluating and approving compensation plans,
payments, and awards for the Company's executive officers. In discharging its
responsibilities in the fiscal year ended April 30, 1999, the Committee used the
services of a compensation consultant (the "Consultant") as a resource in
setting the base and long-term compensation of the chief executive officer and
in an ongoing evaluation of the compensation of the Company's other executive
officers. During the fiscal year ended April 30, 1999, the Committee met three
times.

     Executive Compensation Program.  The Committee is in the process of
developing an executive compensation program for the Company's executive
officers and other key employees. The Committee believes that the program
should:

     - provide competitive compensation opportunities that attract and retain
       top performers;

     - motivate executives to grow the Company through a balanced commitment to
       top line and bottom-line results;

     - create a clear link between corporate function and individual performance
       and rewards; and

     - encourage behaviors that are aligned with Wave's corporate strategy and
       values.

     While the Committee has not formally adopted these four criteria, it has
begun including them in its consideration of compensation issues. It has done so
in the context of the three existing elements of the Company's approach to
compensating executives and other key employees. Base salary, short-term cash
incentives, and long-term incentives in the form of stock options.

     Base salary provides the foundation for executive pay; its purpose is to
compensate the executive for performing his or her basic duties. Short-term cash
incentives are intended to provide rewards for favorable short-term performance.
The purpose of the long-term incentives is to provide incentives and rewards for
long-term performance and to motivate long-term thinking.

                                      II-4
   49

     Base Salary.  Based upon a February 1999 study by the Consultant (the
"Study"), the Company's base salaries for executive officers are generally below
the median base salaries for similar level officers in a comparison group of
thirteen public technology training companies. The Company has recently used
base salaries closer to the median to recruit qualified officers, but
historically the Company executive officers have had to look to
performance-based bonuses to increase their cash compensation. The Committee is
evaluating the Company's base compensation structure but has not adopted any
modifications of it.

     Short Term Cash Incentives.  Short term cash incentives are
performance-based cash bonuses. For the fiscal year ended April 30, 1999, and in
previous years, the Company's Chief Executive Officer and the Committee
developed performance goals for each executive officer. Bonus plans for
executives with primary responsibility for sales focused on revenue generation,
while plans for administrative officers often gave the most weight to net income
of the Company. Bonus plans for officers also included other specific job and
financial performance targets for each individual.

     The Study indicated that on average the total cash compensation (both base
and bonus) received by Company executives was below the median for the peer
group. The Consultant suggested the Committee consider a bonus program in which
each officer has a target annual bonus. The officer would receive between 0% and
200% of the target bonus depending upon the Company's success in attaining or
surpassing revenue and earnings per share goals. The Committee is considering
the proposal but has taken no action on it.

     Long-Term Incentives.  The Company uses stock options as its form of
long-term incentive for executives. In recent years, the Company has used
options principally to recruit key employees and, to a lesser extent, to retain
others. There has been no program of annual grants to executive officers as a
group. The Consultant recommended that the Committee initiate a program of
annual grants to provide compensation opportunities that are competitive with
the Company's peer group. The Committee has not acted upon the Consultant's
recommendation.

     Chief Executive Officer Compensation.  Mr. Kousky founded the Company in
1988 and has served as President and Chief Executive Officer since then. For the
fiscal year ended April 30, 1999, his base compensation was $234,000, compared
to $225,000 in the prior fiscal year. The Study indicated that his base salary
in both years was substantially below the median for presidents and chief
executive officers of the peer group. Mr. Kousky received no bonus in the year
ended April 30, 1999. As a result, his total cash compensation was well below
that of his counterparts in the peer group.

     With the exception of options for 1,500 shares, until March 22, 1999, Mr.
Kousky had not received any option grants since the Company's initial public
offering. After evaluating the Study, including information about options held
by presidents and chief executive officers of the peer group, the Committee
adopted the recommendation of the Consultant and effective March 23, 1999,
granted Mr. Kousky options for 110,000 shares exercisable at $3.875, the
then-current market price, and, effective June 2, 1999, options to purchase
40,000 shares at the higher of the market price on June 2, 1999 or the closing
price on March 22, 1999. Options for 50,000 shares vest in equal annual
installments over four years beginning in March 2000. Options for another 50,000
shares vest in four equal annual installments beginning in March 2005, but these
options may vest earlier in four equal annual installments beginning on the date
when the closing price of the Company's common stock for 20 consecutive trading
days is $8.00 or greater. Options for the final 50,000 shares vest on a similar
schedule, but the closing price target for early vesting is $11.00 per share.

     All of Mr. Kousky's options granted in March 1999 will be cancelled if the
Company is acquired prior to September 18, 1999. In that case, Mr. Kousky would
receive a cash incentive equal to $1,000 for each $.01 per share by which the
acquisition price exceeds $8.00 per share.

     The Committee believes that Mr. Kousky's 1999 option grant made his total
compensation more competitive with his counterparts in the peer group. At the
same time, they provide an incentive for improving the Company's performance and
shareholder value.

     During the Company's current fiscal year, the Committee will continue its
evaluation of the Study and the Company's compensation of executive officers.
The Committee's intention is to develop a compensation

                                      II-5
   50

program that ties total compensation to corporate and individual performance in
a way that benefits shareholder value.

STOCK OPTION PLANS.

     In 1993, the Company's shareholders adopted a stock option plan for
employees. As amended in 1994, non-qualified options to purchase up to 390,000
shares may be granted under the plan (the "1993 Plan"). As of April 30, 1999,
options for 203,266 shares had been issued and remained outstanding under the
1993 Plan. The 1993 Plan will expire on, and no options may be granted after,
the tenth anniversary of the initial adoption of the 1993 Plan.

     The Board of Directors of the Company adopted the Company's 1995 Stock
Option Plan (the "1995 Plan"), and shareholders approved the 1995 Plan at their
1995 Annual Meeting. Pursuant to the 1995 Plan, the Company may grant options
with respect to an aggregate of up to 200,000 shares of common stock. The
maximum number of shares for which options may be granted to a single optionee
under the 1995 Plan is 25,000. Options granted pursuant to the 1995 Plan may be
either incentive stock options or non-qualified stock options. As of April 30,
1999, options for 164,709 shares had been issued and remain outstanding under
the 1995 Plan.

     In 1997, the Company's shareholders adopted the Company's 1997 Stock Option
Plan (the "1997 Plan"). Pursuant to the 1997 Plan, the Company may grant options
with respect to an aggregate of up to 400,000 shares of common stock. The
maximum number of shares for which options may be granted to a single optionee
under the 1997 Plan in any calendar year is 50,000. Options granted pursuant to
the 1997 Plan may be either incentive stock options or non-qualified stock
options. As of April 30, 1999, options for 50,000 shares had been issued and
remained outstanding under the 1997 Plan.

     In 1993, the Board of Directors and the shareholders of the Company adopted
the Company's Outside Directors Stock Option Plan (the "Directors Plan").
Pursuant to the Directors Plan, each outside director of the Company received an
option to purchase 500 shares of the Company's common stock ("Option") on the
date of the adoption of the Directors Plan. In addition, each new outside
director of the Company receives an Option at the time of his or her appointment
or election to the Board. Outside directors are also granted an Option following
each annual meeting of the Company's shareholders. Each Option becomes fully
vested six months following, and terminates ten years after, the grant date. In
the event an outside director's service on the Board is terminated for any
reason, such director's Options may be exercised, to the extent exercisable at
the time of termination, for a period of ninety days thereafter. The maximum
number of shares which may be issued under the Directors Plan is 40,000.

                                      II-6
   51

                                                                    SCHEDULE III

                 MISSOURI GENERAL AND BUSINESS CORPORATION LAW
                                SECTION 351.455
                               DISSENTER'S RIGHTS

     When shareholder who objects to merger may demand value of shares.  If a
shareholder of a corporation which is a party to a merger or consolidation shall
file with such corporation, prior to or at the meeting of shareholders at which
the plan of merger or consolidation is submitted to a vote, a written objection
to such plan of merger or consolidation, and shall not vote in favor thereof,
and such shareholder, within twenty days after the merger or consolidation is
effected, shall make written demand on the surviving or new corporation for
payment of the fair value of his shares as of the day prior to the date on which
the vote was taken approving the merger or consolidation, the surviving or new
corporation shall pay to such shareholder, upon surrender of his certificate or
certificates representing said shares, the fair value thereof. Such demand shall
state the and class of the shares owned by such dissenting shareholder. Any
shareholder failing to make demand within the twenty day period shall be
conclusively presumed to have consented to the merger or consolidation and shall
be bound by the terms thereof.

     If within thirty days after the date on which such merger or consolidation
was effected the value of such shares is agreed upon between the dissenting
shareholder and the surviving or new corporation, payment therefor shall be made
within ninety days after the date on which such merger or consolidation was
effected, upon the surrender of his certificate or certificates representing
said shares. Upon payment of the agreed value the dissenting shareholder shall
cease to have any interest in such shares or in the corporation.

     If within such period of thirty days the shareholder and the surviving or
new corporation do not so agree, then the dissenting shareholder may, within
sixty days after the expiration of the thirty day period, file a petition in any
court of competent jurisdiction within the county in which the registered office
of the surviving or new corporation is situated, asking for a finding and
determination of the fair value of such shares, and shall be entitled to
judgment against the surviving or new corporation for the amount of such fair
value as of the day prior to the date on which such vote was taken approving
such merger or consolidation, together with interest thereon to the date of such
judgment. The judgment shall be payable only upon and simultaneously with the
surrender to the surviving or new corporations of the certificate or
certificates representing said shares. Upon the payment of the judgment, the
dissenting shareholder shall cease to have any interest in such shares, or in
the surviving or new corporation. Such shares may be held or disposed of by the
surviving or new corporation as it may see fit. Unless the dissenting
shareholder shall file such petition within the time herein limited, such
shareholder and al persons claiming under him shall be conclusively presumed to
have approved and ratified the merger and consolidation, and shall be bound by
the terms thereof.

     The right of a dissenting shareholder to be paid the fair value of his
shares as herein provided shall cease if and when the corporation shall abandon
the merger or consolidation.

                                      III-1
   52

                                                                     SCHEDULE IV

                       SCHEDULE OF TRANSACTIONS IN SHARES
                            DURING THE PAST 60 DAYS

     The following table sets forth purchases of the Shares within the past 60
days by or on behalf of Thomson.


                                                        
                                         Number of
            Date                     Shares Purchased                Price per Share
- -----------------------------  -----------------------------  -----------------------------

             N/A                           None                            N/A

            Total


                                      IV-1
   53

     Manually signed facsimiles of the Letter of Transmittal, properly
completed, will be accepted. The Letter of Transmittal and certificates
evidencing Shares and any other required documents should be sent or delivered
by each stockholder or his broker, dealer, commercial bank, trust company or
other nominee to the Depositary at one of its addresses set forth below.

                        The Depositary for the Offer is:
                    CHASEMELLON SHAREHOLDER SERVICES, L.L.C.



         By Mail:             By Overnight Courier:               By Hand:
                                                   
   Post Office Box 3301         85 Challenger Road        120 Broadway, 13th Floor
South Hackensack, NJ 07606     Mail Drop -- Reorg.           New York, NY 10271
Attn: Reorganization Dept.  Ridgefield Park, NJ 07660    Attn: Reorganization Dept.


                               Other Information:

     Questions or requests for assistance may be directed to the Information
Agent at its address and telephone number listed below. Additional copies of
this Offer to Purchase, the Letter of Transmittal and the Notice of Guaranteed
Delivery may be obtained from the Information Agent. A stockholder may also
contact brokers, dealers, commercial banks or trust companies for assistance
concerning the Offer.

                    The Information Agent for the Offer is:
                           INNISFREE M&A INCORPORATED
                         501 Madison Avenue, 20th floor
                            New York, New York 10022
                                 (212) 750-5833
                         Call Toll Free: (888) 750-5834