Education Technology

The Radian Sector

Published on 04/17/2013

Activity Overview

In this activity, students will explore properties of sectors. Students will derive the formula for the arc length of a sector and the area of a sector.

Key Steps

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    Students will examine the ratio of arc length to radius for two concentric circles. They will change the angle measure to compare the ratio for the circles.

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    Students will discover the formula for arc length of a sector as a percent of the circumference. They will also discover the formula for the area of a sector.