| 摘要 |
An interchangeable educational writing pad is disclosed. The writing pad includes a double walled vinyl placemat having an opening on one side thereof. The vinyl placemat is provided with a marker attachment. A series of printed paper inserts are provided. Each insert includes a problem printed on one side and its solution on the other. The inserts are labeled front and back so that the user may insert the insert with the front facing up, solve the problem, pull out and then flip the insert, and reinsert the insert to check the correct answer.
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