Education Technology

Round and Round She Goes...

Published on 08/18/2010

Activity Overview

Students will explore relationships on a unit circle by identifying coordinates of points given an angle measure in degrees.

Key Steps

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    Students engage in an exploration of points and angles on the unit circle.

    Right triangle relationships are utilized to develop the relationship between angles and coordinates.

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    Students link their prior knowledge of special right triangles to identify coordinates for 30, 45, and 60 degree angles on the unit circle.

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    After establishing relationships in Quadrant I, students extend their knowledge through the application of symmetry to angles in Quadrants II, III, and IV.