Algebraic Expressions Lesson 5 Episode 4 (Teachers)

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Haleemah and ET generalize Amir’s method that relates an unknown Size Number and the number of gray stones in the cobblestone pattern.

Students’ Conceptual Challenges

Example.

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Focus Questions

For use in a classroom, pause the video and ask these questions:

1. [Pause video at x:xxx]. text

Supporting Dialogue

Focus students’ attention on conjecturing and providing evidence for their conjectures:

1. Example