Here is a site that clearly and thoroughly explains arc length and its relationship to radian measure of angles. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who have been absent or who need additional instruction on this or many other topics.

Concepts

arc length

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Additional Tags

definition of radian, radian measure, trigonometry: arc length

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Classroom Considerations

• Knovation Readability Score: 2 (1 low difficulty, 5 high difficulty)

Common Core

HSG-C.B.5 HSF-TF.A.1