It would be helpful to make a double amount of index cards and have them numbered. Students move to teacher-suggested pairs and location in classroom. B. When finished, partners compare, explain methods, and then raise hand for new card. Only pair talking and helping is allowed. Activity continues until teacher thinks students have mastered the objectives or one pair has finished all cards.
Teacher chooses the pairs.
Students make up the cards prior to activity. Teacher needs to make sure both students are writing the problem and answer before giving the pair a new card. To encourage explanation of method, occasionally ask a student to explain his partners method. Check previous problem before giving a new card. It would be helpful to use a stamp to identify correct answers.