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Lesson Plan

Investigate and calculate arc length by using circumference and ratios

teaches Common Core State Standards CCSS.Math.Content.HSG-C.B.5 http://corestandards.org/Math/Content/HSG/C/B/5
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Big Ideas: Calculate and apply the length of an arc by using angles and circumference. This task involves students using the circumference of a circle to derive the arc length formula. The task begins with a contextual problem where the student is encouraged to visualize and substitute values in place for theta. Students realize that arc length is proportional to circumference. Vocabulary: arc length, radian, circumference
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