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K–12 teaching and learning · from the UNC School of Education

Finding What Doesn't Change

http://illuminations.nctm.org/LessonDetail.aspx?ID=L467

A lesson plan for grades 9–12 Mathematics

Provider: National Council of Teachers of Mathematics


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In this lesson, the second in a four-part series from Illuminations titled “Symmetries and Their Properties — Part 1: Rotational Symmetry” students predict the effect of a rotation through a given angle. They also learn to predict the effect of two or more rotations performed one after the other, and to find angles that leave a figure unchanged.

North Carolina Curriculum Alignment