Trigonometry Lesson 2 Episode 3 (Teachers)

Repeating Your Reasoning

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Claire and Mary again measure the angles in their drawings of the boy rotating.This time, they measure the angles in gips.


Episode Supports

Focus Questions

For use in a classroom, pause the video and ask this question:

[Pause the video at 0:20] Before watching Claire and Mary, try this for yourself. What are the measures, in gips, of the three angles?

Supporting Dialogue

[Pause the video at 2:16] Mary claimed the last angle was 1.75 gips, and Claire disagreed. They eventually decided on an estimate of 1.95 gips. Why do you think Claire so quickly disagreed with 1.75 gips for the last angle? Share your thoughts with a partner.