Trigonometry Lesson 3 Episode 2 (Teachers)

Making Sense

Download Math Task

Mary and Claire explore another student’s reasoning who thought that you could use arc length to determine the angle of rotation. They compare two arcs with different lengths. or not you can use arc length to measure the angle of rotation.


Episode Supports

Students’ Conceptual Challenges

Focus Questions

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

Supporting Dialogue