Reflecting
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ET and Haleemah reflect on their generalized algebraic expression and think about what would happen if their variable, v, was a negative number.
Episode Supports 
Students’ Conceptual Challenges
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