EXHIBIT 2.2
                                        
                                AMENDMENT NO. 1
                                       TO
                          AGREEMENT AND PLAN OF MERGER
                          ----------------------------

     THIS AMENDMENT NO. 1, dated as of December 20, 1996 (this "Amendment"), is
among KNOWLEDGE ADVENTURE, INC., A Delaware corporation (the "Company"), CUC
INTERNATIONAL INC., a Delaware corporation ("Parent"), and KA ACQUISITION CORP.,
a Delaware corporation and a direct wholly owned subsidiary of Parent
("Acquisition").

                                R E C I T A L S
                                ---------------

     A.  Parent, Acquisition and the Company have entered into an Agreement and
Plan of Merger dated as of October 11, 1996 (collectively, with all schedules,
exhibits, amendments and certificates referred to therein, the "Merger
Agreement"), which provides for the acquisition by Parent of the Company by way
of a merger of Acquisition Sub with and into the Company (the "Merger"), with
the Company continuing as the surviving corporation and becoming a wholly owned
subsidiary of Parent.  Capitalized terms not otherwise defined herein shall have
the meanings set forth in the Merger Agreement.

     B.  The parties wish to amend the Merger Agreement on the terms and subject
to the conditions set forth herein.


                               A G R E E M E N T
                               -----------------

     NOW, THEREFORE, in consideration of the foregoing and the provisions set
forth herein, and for other good and valuable consideration, the parties hereby
agree as follows:

     1.  AMENDMENT OF SECTION 1.8 (CONVERSION OF COMPANY SHARES).  Section 1.8
         -------------------------------------------------------
of the Merger Agreement is hereby amended by deleting such section in its
entirety and replacing it with the following:


     "Section 1.8  Conversion of Company Shares.
                   ----------------------------

          (a)  At the Effective Time, by virtue of the Merger and without any
     action on the part of the Company, Parent, Acquisition or the holders of
     any of the Company Shares (other than (x) Company Shares held by Parent,
     Acquisition or any other subsidiary of Parent, (y) Company Dissenting
     Shares (as defined in Section 1.9) and (z) Company Shares held in the
     Company's treasury), all of the shares of:

               (i)    Common Stock, par value $.0001 per share, of the Company
          ("Company Common Stock");

               (ii)   Series A Convertible Preferred Stock, par value $.0001 per
          share, of the Company ("Series A Preferred Stock");

 
               (iii)  Series B Convertible Preferred Stock, par value $.0001 per
          share, of the Company ("Series B Preferred Stock");

               (iv)   Series C Convertible Preferred Stock, par value $.0001 per
          share, of the Company ("Series C Preferred Stock");

               (v)    Series D Convertible Preferred Stock, par value $.0001 per
          share, of the Company ("Series D Preferred Stock");

               (vi)   Series E Convertible Preferred Stock, par value $.0001 per
          share, of the Company ("Series E Preferred Stock"); and

               (vii)  Series F Convertible Preferred Stock, par value $.0001 per
          share, of the Company ("Series F Preferred Stock");

     issued and outstanding immediately prior to the Effective Time shall be
     converted into the right to receive, in the aggregate, the total of (a)
     2,277,747 fully paid and nonassessable shares of common stock, $.01 par
     value per share, of Parent ("Parent Common Stock") (the "Base
     Consideration"), minus (b) the aggregate number of fully paid and
     nonassessable shares of Parent Common Stock issuable after the Effective
     Time upon exercise of all Parent Replacement Options (as defined in Section
     1.11(a)) minus (c) the aggregate number of fully paid and nonassessable
              -----
     shares of Parent Common Stock issuable after the Effective Time upon
     exercise of all Preferred Replacement Options (as defined in Section
     1.11(a)), plus, (d) an additional 499.232 fully paid and nonassessable
               ----
     shares of Parent Common Stock for each calendar day after December 1, 1996
     and prior to the Closing Date (the "Additional Consideration"), in each
     case subject to the indemnification and escrow provisions of Section 1.12
     and the Escrow Agreement (as defined below) (the total of clause (a), minus
                                                                           -----
     clause (b), minus clause (c) and plus clause (d), subject to such
                 -----                ----
     indemnification and escrow provisions, being hereinafter referred to as the
     "Merger Consideration").  Each share of Company Common Stock, Series A
     Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series
     D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock
     shall be converted into the right to receive that portion of the Merger
     Consideration to which such share is entitled under, and in accordance
     with, Article IV, Section B.2 of the Restated Certificate of Incorporation
     of the Company.

          Issued and outstanding shares of Company Common Stock and issued and
     outstanding shares of Series A Preferred Stock, Series B Preferred Stock,
     Series C Preferred Stock, Series D Preferred Stock, Series E Preferred
     Stock and Series F Preferred Stock (collectively, "Company Preferred
     Stock") are referred to herein collectively as the "Company Shares."

          (b)  [Intentionally omitted.]

                                       2

 
          (c)  At the Effective Time, each outstanding share of the common
     stock, par value $0.01 per share, of Acquisition shall be converted into
     one share of common stock, par value $0.0001 per share, of the Surviving
     Corporation.

          (d)  At the Effective Time, each Company Share, if any, held by
     Parent, Acquisition or any subsidiary of Parent or Acquisition immediately
     prior to the Effective Time shall, by virtue of the Merger and without any
     action on the part of Parent, Acquisition or such subsidiary, be canceled,
     retired and cease to exist, and no payment shall be made with respect
     thereto.

          (e)  At the Effective Time, each Company Share held in the Company's
     treasury immediately prior to the Effective Time shall be canceled, retired
     and cease to exist, and no payment shall be made with respect thereto."

     2.  AMENDMENT OF SECTION 1.11 (COMPANY STOCK OPTIONS).  Section 1.11 of the
         -------------------------------------------------
Merger Agreement is hereby amended by deleting such section in its entirety and
replacing it with the following:

     "Section 1.11  Company Stock Options.
                    ---------------------

          (a)  At the Effective Time, each outstanding option, warrant or
     similar security, whether vested or unvested, entitling the holder thereof
     to acquire any Company Common Stock, whether issued pursuant to the
     Company's 1991 Stock Option Plan or the Company's 1993 Stock Option Plan
     (collectively, the "Company Plans") or otherwise (individually, a "Company
     Stock Option," and, collectively, "Company Stock Options"), shall be
     assumed by Parent and converted into an option (each, a "Parent Replacement
     Option") to acquire, on substantially the same terms and conditions as were
     applicable under such Company Stock Option, the same number of shares of
     Parent Common Stock as the holder of such Company Stock Option would have
     been entitled to receive pursuant to this Agreement had such holder
     exercised such option in full immediately prior to the Effective Time
     (assuming, for the purpose of such calculation only, that all outstanding
     and unexercised Preferred Options and Company Stock Options, whether or not
     then exercisable, were exercised in full immediately prior to the Effective
     Time and that, for the purpose of such calculation only, the Merger
     Consideration will equal the sum of the Base Consideration and the
     Additional Consideration), at a price per share equal to (i) the aggregate
     exercise price for the shares of Company Common Stock subject to such
     Company Stock Option, divided by (ii) the number of full shares of Parent
                           ----------
     Common Stock deemed purchasable pursuant to such Company Stock Option as
     described above; provided, however, that (A) the number of Parent
     Replacement Options, and the number of shares of Parent Common Stock that
     may be purchased upon the exercise of such Parent Replacement Options,
     shall be subject to the indemnification provisions of Section 1.12, (B) the
     number of shares of Parent Common Stock that may be purchased upon exercise
     of such Parent Replacement Options shall not include any fractional share
     and, upon exercise of the Parent Replacement Options, any fractional share
     shall be rounded down to the nearest whole share, and (C) in the case of
     any Company Stock Option to which Section 421 of the Code (as defined
     below) applies by reason of its

                                       3

 
     qualification under Section 422 of the Code ("incentive stock options"),
     the option price, the number of shares purchasable pursuant to such option
     and the terms and conditions of such option shall be determined in order to
     comply with Section 424(a) of the Code. At the Effective Time, each
     outstanding option, warrant or similar security, whether vested or
     unvested, entitling the holders thereof to acquire any shares of Company
     Preferred Stock (individually, a "Preferred Option," and, collectively,
     "Preferred Options"), shall be assumed by Parent and converted into an
     option (each, a "Preferred Replacement Option") to acquire, on
     substantially the same terms and conditions as were applicable under such
     Preferred Option, the same number of shares of Parent Common Stock as the
     holder of such Preferred Option would have been entitled to receive
     pursuant to this Agreement had such holder exercised such option in full
     immediately prior to the Effective Time (assuming, for the purpose of such
     calculation only, that all outstanding and unexercised Preferred Options
     and Company Stock Options, whether or not then exercisable, were exercised
     in full immediately prior to the Effective Time and that, for the purpose
     of such calculation only, the Merger Consideration will equal the sum of
     the Base Consideration and the Additional Consideration), at a price per
     share equal to (i) the aggregate exercise price for the shares of Company
     Preferred Stock subject to such Preferred Option, divided by (ii) the
                                                       ----------
     number of full shares of Parent Common Stock deemed purchasable pursuant to
     such Preferred Option as described above; provided, however, that (A) the
     number of Preferred Replacement Options, and the number of shares of Parent
     Common Stock that may be purchased upon the exercise of such Preferred
     Replacement Options, shall be subject to the indemnification provisions of
     Section 1.12 and (B) the number of shares of Parent Common Stock that may
     be purchased upon exercise of such Preferred Replacement Options shall not
     include any fractional share and, upon exercise of the Preferred
     Replacement Options, any fractional share shall be rounded down to the
     nearest whole share. It is understood that each Company Plan and each
     agreement pertaining to any other Company Stock Option or Preferred Option
     (other than any rights on the part of the Company contained therein to
     repurchase shares of Company Common Stock received on exercise of options)
     shall continue in effect as a plan or agreement of the Company as the
     Surviving Corporation in the Merger, unaffected and unmodified by the
     Merger, other than that each such Company Stock Option and each such
     Preferred Option shall thereafter be exercisable for Parent Common Stock as
     a Parent Replacement Option or Preferred Replacement Option, as provided
     above. The foregoing shall not obligate the Company, Surviving Company or
     Parent to issue any further options under any Company Plan.

          (b)  No less than twenty (20) business days prior to the Effective
     Time, the Company shall deliver a notice to each holder of any Company
     Stock Options or any Preferred Options, at the address of such holder shown
     on the Company's records, notifying such holder (i) of the right of such
     holder to exercise such Company Stock Options or Preferred Options in
     accordance with their terms prior to the Effective Time and (ii) that any
     of such holder's Company Stock Options or Preferred Options that remain
     unexercised as of the Effective Time will be assumed by Parent and
     converted into Parent Replacement Options or Preferred Replacement Options,
     as applicable, pursuant to Section 1.11(a).

                                       4

 
          (c)  Parent shall take all corporate action necessary to reserve for
     issuance a sufficient number of shares of Parent Common Stock for delivery
     upon exercise of the Parent Replacement Options and Preferred Replacement
     Options.  Parent shall use its best efforts to cause there to be effective
     as of the Effective Time, or as soon as practicable thereafter, a
     registration statement on Form S-8 (or any successor form) or another
     appropriate form with respect to the Parent Common Stock subject to any
     Parent Replacement Options and Preferred Replacement Options held by
     persons who are or were directors, officers, employees or consultants
     (subject to the rules of such form) of the Company, and shall use its best
     efforts to maintain the effectiveness of such registration statement or
     registration statements (and maintain the current status of the prospectus
     or prospectuses contained therein) for so long as such Parent Replacement
     Options and Preferred Replacement Options remain outstanding.

          (d)  The Company shall not assign to Parent, Acquisition or the
     Surviving Corporation, and neither Parent, Acquisition nor the Surviving
     Corporation shall assume, any rights of the Company under certain stock
     purchase agreements between the Company and certain employees and other
     persons to repurchase Company Common Stock acquired upon the exercise of
     Company Stock Options."

     3.  AMENDMENTS TO SECTION 1.12 (INDEMNIFICATION; ESCROWED PARENT COMMON
         -------------------------------------------------------------------
STOCK).  Section 1.12 of the Merger Agreement is hereby amended by deleting such
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Section in its entirety and replacing it with the following:

     "Section 1.12  Indemnification; Escrowed Parent Common Stock.
                    ---------------------------------------------

          (a)  The holders of Company Shares immediately prior to the Effective
     Time and all holders of Parent Replacement Options and Preferred
     Replacement Options shall indemnify, defend and hold harmless, jointly and
     severally, Parent, Acquisition and, after the Effective Time, the Surviving
     Corporation, and each of their respective affiliates, successors, assigns,
     agents and representatives (collectively, the "Affiliated Parties"),
     against and in respect of any and all claims, demands, losses, costs,
     expenses, obligations, liabilities, damages, remedies and penalties
     (including, without limitation, interest, penalties, settlement costs and
     any legal, accounting or other fees and expenses for investigating or
     defending any claims or threatened actions) (collectively, "Losses") that
     Parent, Acquisition, the Surviving Corporation or any of their respective
     Affiliated Parties actually incur or suffer in connection with:

               (i)    any breach of any of the representations or warranties
          made by the Company in this Agreement or in any certificate,
          instrument or other document delivered pursuant hereto;

               (ii)   any breach of any covenant of the Company contained in
          this Agreement;

               (iii)  the restatement, if any, by Price Waterhouse LLP, the
          Company's auditors, of the financial statements of the Company
          identified

                                       5

 
          in Sections 2.4(a)(i) or (ii), provided that, in respect of this
          clause (iii), such indemnification shall be limited to Losses that are
          actually incurred or suffered as a result of a claim or demand made by
          any person against Parent, Acquisition, the Surviving Corporation or
          any of their respective Affiliated Parties, whether for Taxes or
          otherwise; or

               (iv)   any default under or violation of the Loan and Security
          Agreement dated February 2, 1994, between the Company and Silicon
          Valley Bank, including all exhibits and schedules thereto and all
          related agreements, instruments and other documents (in each case as
          supplemented, amended or otherwise modified from time to time, the
          "Silicon Loan Documents"), whether in existence on the date hereof or
          arising after the date hereof and prior to the Effective Time;

     provided, however, that no claim, demand, suit or cause of action shall be
     brought against the stockholders of the Company or holders of Parent
     Replacement Options or Preferred Replacement Options under Section
     1.12(a)(i) or (ii) unless and until the aggregate amount of claims under
     this Section 1.12(a) exceeds, on a cumulative basis, $250,000, in which
     event Parent, Acquisition, the Surviving Corporation and any of their
     respective Affiliated Parties shall be entitled to indemnification from the
     stockholders of the Company or holders of Parent Replacement Options or
     Preferred Replacement Options for all claims under Section 1.12(a)(i) or
     (ii) relating back to the first dollar.

          (b)  At the Closing, certificates representing nine percent (9%) of
     the number of shares of Parent Common Stock (rounded up to the nearest
     whole share) issued in the Merger pursuant to Section 1.8 (the "Escrowed
     Parent Common Stock") shall be deposited into an escrow account and held
     pursuant to the terms of an Escrow Agreement among Parent, the Surviving
     Corporation, the Escrow Committee (as defined therein) and the escrow
     agent, in substantially the form of Exhibit D (the "Escrow Agreement").
                                         ---------
     The Escrowed Parent Common Stock shall be withheld pro rata from the number
     of shares of Parent Common Stock to be received by each stockholder of the
     Company in the Merger; for such purpose, rounding shall be utilized so that
     the total withheld is exactly nine percent (9%) of the number of shares of
     Parent Common Stock (rounded up to the nearest whole share).  To the extent
     that Parent, Acquisition, the Surviving Corporation or any of their
     respective Affiliated Parties shall have any claims for indemnification
     pursuant to Section 1.12(a), it or they may seek recourse against the
     Escrowed Parent Common Stock in seeking satisfaction of such claims.  The
     Escrowed Parent Common Stock, less the number of shares of Escrowed Parent
                                   ----
     Common Stock having a fair market value most nearly equal to the aggregate
     amount of all indemnification claims made by Parent, Acquisition, the
     Surviving Corporation or their respective Affiliated Parties under Section
     1.12(a) (for such purposes, the fair market value of one share of Escrowed
     Parent Common Stock shall be equal to its Closing Price (as defined below)
     as of the Closing Date), shall be released to the stockholders of the
     Company pursuant to the Escrow Agreement on the earlier to occur (the
     "Escrow Release Date") of (i) the four (4) month anniversary of the Closing
     and (ii) the date upon which audited consolidated financial statements of
     Parent, which include the results of operations of the Surviving
     Corporation,

                                       6

 
     shall have been completed and Parent shall have received a signed opinion
     of Ernst & Young LLP ("E&Y"), its independent auditors, with respect to
     such financial statements. Upon the approval by the stockholders of the
     Company of the Merger Agreement and the Merger, such stockholders shall be
     deemed to have irrevocably appointed an escrow committee consisting of
     Michael Levinthal and Jon Feiber (the "Escrow Committee") to act as their
     attorney-in-fact on behalf of such stockholders to consent to, contest,
     settle, compromise or otherwise dispose of any claim made by Parent or any
     other Affiliated Party in accordance with Section 1.12(a) and the Escrow
     Agreement. No further documentation shall be required to evidence such
     appointment, and such power of attorney shall be coupled with an interest,
     thereby confirming such appointment as irrevocable. The Escrow Committee
     shall be empowered to act by majority vote with respect to all matters
     arising under Section 1.12(a) and the Escrow Agreement. If any member of
     the Escrow Committee shall die, become disabled or otherwise be unable or
     unwilling to fulfill his responsibilities hereunder, each the remaining
     members of the Escrow Committee shall select a replacement member. Such
     remaining members of the Escrow Committee shall notify Parent and the
     Escrow Agent in writing of any change in the composition of the Escrow
     Committee. The term "Closing Price" shall mean, on any day, the last
     reported sale price of one share of Parent Common Stock on the New York
     Stock Exchange (the "NYSE") Composite Transactions.

          (c)  The sole and exclusive remedy of Parent, Acquisition, the
     Surviving Corporation and their respective Affiliated Parties against the
     stockholders of the Company for any indemnification claim brought under
     Section 1.12(a) following the Effective Time shall be the return of shares
     of Escrowed Parent Common Stock pursuant to the Escrow Agreement.  If, and
     to the extent that, there are Company Stock Options or Preferred Options
     that remain outstanding and unexercised immediately prior to the Effective
     Time, Parent, Acquisition, the Surviving Corporation and any of their
     respective Affiliated Parties will be entitled to have recourse against the
     holders of Parent Replacement Options and/or Preferred Replacement Options,
     as applicable, issued in the Merger in exchange for such Company Stock
     Options or Preferred Options in seeking satisfaction of any indemnification
     claims, which recourse shall only be available prior to the Escrow Release
     Date and shall be limited solely to the right to demand the return (or
     cancellation) of a number of Parent Replacement Options and/or Preferred
     Replacement Options, or Parent Common Stock if such Parent Replacement
     Options or Preferred Replacement Options, as applicable, have theretofore
     been exercised, having a fair market value most nearly equal to the
     aggregate amount of all indemnification claims; provided, however, that
     such indemnified parties shall only be entitled pursuant to this sentence
     to demand the return (or cancellation) of Parent Replacement Options,
     Preferred Replacement Options, or Parent Common Stock, as applicable,
     having a fair market value that does not exceed 9% of the fair market value
     of the Parent Replacement Options, Preferred Replacement Options, or Parent
     Common Stock, as applicable, received by such holders in exchange for their
     Company Stock Options or Preferred Options (for all such purposes, the fair
     market value of one share of Parent Common Stock shall be equal to its
     Closing Price as of the Closing Date).  Notwithstanding anything to the
     contrary, nothing contained in this Section 1.12 shall in any way limit any
     claim, cause of action or remedy

                                       7

 
     that may be available to Parent, Acquisition, the Surviving Corporation or
     any of their respective Affiliated Parties against (i) any stockholder of
     the Company or any holder of options to acquire capital stock of the
     Company, whether at law or in equity, for willful or intentional fraud or
     in connection with the execution and/or delivery by such stockholder or
     optionholder of its Affiliate Letter or any certificate, instrument or
     agreement executed and/or delivered by such stockholder or optionholder or
     (ii) the Company for breach of any representation, warranty, covenant or
     agreement contained herein or in any other certificate, instrument or
     agreement (including any Affiliate Letter) executed and delivered in
     connection with the Merger."

     4.  AMENDMENT OF SECTION 2.2 (CAPITALIZATION OF THE COMPANY).  Section
         --------------------------------------------------------
2.2(a) of the Merger Agreement is hereby amended by deleting the penultimate
sentence in the last paragraph of Section 2.2(a) in its entirety and replacing
it with the following:

     "Since August 31, 1996, no shares of the Company's capital stock have been
     issued other than pursuant to the exercise of Company Stock Options or
     Preferred Options in existence on such date and no additional Company Stock
     Options or Preferred Options have been granted, other than shares of
     Company capital stock and options permitted to be issued and granted
     pursuant to Section 4.1(ii)."

     5.  CLARIFICATION OF SECTION 2.4(a) (FINANCIAL STATEMENTS; NET ASSETS).
         ------------------------------------------------------------------
The first sentence of Section 2.4(a) of the Merger Agreement refers to audited
consolidated statements of income, stockholder's equity and cash flow and the
notes thereto of the Company for the three years ended March 31, 1996.  as a
matter of clarification, the parties acknowledge and agree that the fiscal year
ended March 31, 1994 was a short fiscal year commencing January 1, 1994.

     6.  AMENDMENT OF SECTION 2.4(b) (FINANCIAL STATEMENTS: NET ASSETS).
         ----------------------------------------------------------------
Section 2.4(b) of the Merger Agreement is hereby amended to read in its entirety
as follows:

     "The "Net Assets" of the Company as of the Closing shall be not less than
     $100,000.  For purposes of this Agreement, "Net Assets" means the excess of
     (i) the sum of the Company's cash, cash equivalents, capitalized software
     acquisition costs, licenses and trademarks, investment in KA Worlds,
     collectible receivables, salable inventory (including raw materials for
     inventory), fixed assets, prepaid expenses (including advance royalties),
     marketable securities and up to $425,000 of capitalized costs of the Merger
     over (ii) all of the Company's liabilities, including, without limitation,
     all liabilities with respect to Taxes, in each case as determined in
     accordance with GAAP in conformity with the practices consistently applied
     by the Company with respect to prior periods.  The parties acknowledge that
     the unaudited balance sheet of the Company as of September 30, 1996
     reflects "Net Assets" of approximately $979,000."

     7.  AMENDMENT OF SECTION 4.2 (EXEMPTION FROM REGISTRATION OR SECURITIES ACT
         -----------------------------------------------------------------------
REGISTRATION).  Section 4.2 of the Merger Agreement is hereby amended by adding
- -------------
thereto a new paragraph (c), which shall read in full as follows:

                                       8

 
          "(c)  The parties have agreed that, in light of the recent adoption of
     the National Securities Markets Improvement Act of 1996 (the "Improvement
     Act"), the availability of the exemption under Section 3(a)(10) of the
     Securities Act with respect to the securities to be issued in the Merger is
     unclear, and, accordingly, the parties have agreed to prepare and file with
     the SEC the S-4.  If, prior to the time the S-4 is declared effective by
     the SEC, the Company and/or Parent receive a formal written interpretive
     letter from the SEC advising them that the exemption under Section 3(a)(10)
     of the Securities Act continues to be available with respect to the
     issuance of securities of a NYSE listed corporation in a merger transaction
     that is the subject of a Fairness Hearing under Section 25142 of the
     California Securities Law, then, if Parent and the Company mutually elect,
     the parties shall withdraw the S-4 from the SEC and recommence the
     preparation and filing of the necessary documentation to hold a Fairness
     Hearing with respect to the Merger, as contemplated by Section 4.2(a)
     above."

     8.  AMENDMENT TO SECTION 4.11 (POOLING).  The third, fourth and fifth
         -----------------------------------
sentences of Section 4.11 of the Merger Agreement are hereby amended by deleting
such sentences in their entirety and replacing them with the following:

          "Parent shall use commercially reasonable efforts to cause E&Y to
     deliver to Parent a letter to the effect that pooling-of-interest
     accounting (under Accounting Principles Board Opinion No. 16) is
     appropriate for the Merger if it is closed and consummated in accordance
     with the terms of this Agreement, and the Company shall use commercially
     reasonable efforts to cause Price Waterhouse LLP to cooperate fully with
     E&Y (including, without limitation, sharing information, analysis and work
     product, engaging in active discussions and delivering to Parent, the
     Company and E&Y a letter (the "PW Pooling Letter"), subject to customary
     qualifications, to the effect that pooling-of-interest accounting (under
     Accounting Principles Board Opinion No. 16) is appropriate for the Merger)
     in connection with E&Y's delivery of such letter.  The parties acknowledge
     that the receipt of the PW Pooling Letter from Price Waterhouse LLP is a
     precondition to E&Y's ability to delivery its letter to Parent.  The
     Company will inform all Company affiliates and other relevant employees as
     to those actions that should or should not be taken by such persons so that
     the Merger will be accounted for as a pooling-of-interests."

     9.  AMENDMENT OF SECTION 4.16 (PARENT STOCK OPTION AND EMPLOYEE BONUS
         -----------------------------------------------------------------
POOL).  Section 4.16(b) of the Merger Agreement is hereby amended by replacing
- -----
the figure "$1.538 million" in the first sentence of such Section with "$1.16
million."

     10.  AMENDMENT OF SECTION 4.21 (CERTAIN FILING BY PARENT).  Section 4.21 of
          ----------------------------------------------------
the Merger Agreement is hereby amended and restated to read in its entirety as
follows:

          "If the Closing Date shall occur at any time after December 31, 1996,
     Parent agrees to file with the SEC under the Exchange Act a Current Report
     on Form 8-K reporting the results of the combined operations of Parent and
     the Surviving Corporation for a full thirty (30) day period (the "Combined
     Period"), no later than thirty (30) days following the completion of such
     Combined Period."

                                       9

 
     11.  AMENDMENT OF SECTION 5.3 (CONDITIONS TO THE OBLIGATIONS OF PARENT AND
          ---------------------------------------------------------------------
ACQUISITION).  Section 5.3 of the Merger Agreement is amended by deleting
- ------------
Section 5.3(m) thereof in its entirety.  the parties hereto agree that, for
purposes of the agreement, (i) Section 2.18 of the Company Disclosure Schedule
shall be deemed to include the top-level internet domain names listed in Exhibit
A to this Amendment (the "Domain Names"), (ii) the Domain Names shall be deemed
included within the term "Intellectual Property Rights" as such term is used
throughout the Agreement, and (iii) the representations and warranties of the
Company contained in the second sentence and the third sentence of Section
2.18(a) of the Agreement shall be deemed to cover the Domain Names, whether or
not such Domain Names are used in the Company's businesses as presently
conducted or are necessary or required for the conduct of the Company's
businesses as presently conducted.

     12.  AMENDMENT OF SECTION 6.2 (EFFECT OF TERMINATION).  The first sentence
          ------------------------------------------------
of Section 6.2 of the Merger Agreement is hereby amended by replacing the
reference to "Section 4.5(c)" therein with the reference to "Section 4.5(d)."

     13.  AMENDMENT OF COMPANY DISCLOSURE SCHEDULE.  The references in Section
          ----------------------------------------
2.2 to the Company Disclosure Schedule to certain agreements between William
Gross and other individuals relating to the issuance or grant of options to
acquire Company Common Stock and Company Preferred Stock by William Gross are
hereby deleted in their entirety and replaced with the schedule of option grants
attached to that certain letter from William Gross to Lawrence S. Gross dated
October 11, 1996, a copy of which has been provided to Parent.

     14.  STOCK SPLIT.  The parties acknowledge that, since the date of the
          -----------
Agreement, the Common Stock of parent has split on a 3 for 2 basis effective as
of October 21, 1996.  References in this Amendment are to the pre-split shares.

     15.  MISCELLANEOUS.  This Amendment shall be governed by and construed and
          -------------
enforced in accordance with, the laws of the State of Delaware, without regard
to its conflicts or choice of law principles.  This amendment may be executed in
one or more counterparts, each of which shall be deemed an original, but all of
which shall constitute one and the same instrument.

     16.  FULL FORCE AND EFFECT.  Except as provided herein, the Merger
          ---------------------
Agreement shall remain in full force and effect.  As amended hereby, the Merger
Agreement is hereby ratified and confirmed in all respects.

                                       10

 
          IN WITNESS WHEREOF, the parties have executed this Amendment as of the
day and year first above written.


                                KNOWLEDGE ADVENTURE, INC., a
                                Delaware corporation


                                By:  /s/ Lawrence S. Gross
                                   ------------------------------
                                   Lawrence S. Gross
                                   President


                                CUC INTERNATIONAL INC., a Delaware
                                corporation


                                By:  /s/ Robert M. Davidson
                                   ------------------------------
                                   Robert M. Davidson
                                   Vice Chairman
  

                                KA ACQUISITION CORP., a Delaware
                                corporation

                                By:  /s/ Paula V. Duffy
                                   ------------------------------
                                   Paula V. Duffy
                                   Vice President

                                       11

 
                                   EXHIBIT A
                                   ---------

                                  DOMAIN NAMES

          1stgrade.com

          2ndgrade.com

          3rdgrade.com

          4thgrade.com

          5thgrade.com

          6thgrade.com

          7thgrade.com

          8thgrade.com

          9thgrade.com

          10thgrade.com

          11thgrade.com

          12thgrade.com

          firstgrade.com

          secondgrade.com

          thirdgrade.com

          fourthgrade.com

          fifthgrade.com

          sixthgrade.com

          pre-k.com

          kidchat.com

          knowledgeland.com

          jumpstart.com

          jumpstart-ka.com

                                       12