Have partners work together to solv

Have partners work together to solve four different tangram puzzles. For example, one can give directions as the other "drives the mouse." Encourage the students to think about how they need to manipulate the Tangram pieces before they begin moving the pieces. Encourage them to make a plan about how to move the pieces, rather than using trial‑and‑error as their strategy. Discuss with students the plans they develop. Ask them to defend their reasoning. This will elicit use of accurate mathematical vocabulary and associate it with the appropriate transformation.

Teams should record their solutions on the activity sheet. Partners should switch roles until all four puzzles are completed.