Serve up angle measurements on paper plates. Pupils use paper plates and paper-folding techniques to create a unit circle with conversions for special angles. Using their plates, learners explore the relationship between angle measurements expressed in degrees and radians.

Concepts

radians, arc length, degrees, unit conversions, angle measurement

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Additional Tags

math

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Instructional Ideas

• Demonstrate to the class how a radian relates to the length of an arc and the radius

Classroom Considerations

• Individuals should be familiar with the special angles for special right triangles
• Practice the folding the paper plates prior to doing the lesson

Pros

• Includes suggestions with links for extending the lesson or providing additional assistance
• Provides a practice sheet to solidify the conversions

Cons

• None

Common Core

HSF-TF.A.1