This lesson is designed to help students develop strategies for modeling. Note that a video of this lesson is available in the professional development materials.
Before the lesson, students attempt the problem individually. You then review their work and write questions to help students improve their solutions.
At the start of the lesson, students work individually answering questions about the same problem. In small groups, students then work collaboratively on the task. In the same small groups, students evaluate sample solutions. In a whole-class discussion, students explain and compare the alternative solution strategies they have seen and used.
In a follow-up lesson, students review what they have learned.