This activity can be completed in groups of 2, 3 or 4. Break the problems down into sets based on the academic level of your students. For lower level students, I break the problems into groups of 5. For upper level students, challenge them by giving them all 20 problems at once!!
The expressions are set up so that they can be printed on labels and then placed on index cards. Index cards will be a little bit more durable and easier to find when they drop one of the floor.
I used stickers to keep my sets organized…groups of red, gold, blue and silver stars. This helped the students to recall which sets they had completed.
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