Lesson Plan

Illustrative Mathematics: F Tf.1 What Exactly Is a Radian?

Curated by ACT

For this task, students use a piece of string or another tool to measure the radius of the circle and then mark off the corresponding arc length on the unit circle as many times as they need to for 0, 1, 2, 3, 4, 5, and 6 radians. They then can use the black dots to estimate the corresponding angle measure in degrees. Aligns with HSF-TF.A.1.

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CCSS: Adaptable
Classroom Considerations
  • Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional|practice
Common Core