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The Reversibility Idea

The Ten-Lesson Progression

Running Lesson 6 Well

When Lesson 6 Doesn't Land

Module 2 Knowledge Check

Module 2: the unit's distinguishing content — teaching reversible vs. one-way change, the ten-lesson progression, and recovery if Lesson 6 doesn't land.

The hardest and most valuable thing this unit does: building a genuine abstract category across eight different phenomena — and what to do when the lesson designed to name it doesn't land.

Mixing and Changing Unit: Teaching Reversible vs. One-Way Change

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