Illuminations: Pinwheel

Each student creates parallelograms from square sheets of paper and connects them to form an octagon.

During the construction, students consider angle measures, segment lengths, and areas in terms of the original square. At the end of the lesson, the octagon is transformed into a pinwheel, and students discover a surprising result.


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Math Topics
Middle School, High School, Educator
6th Grade, 7th Grade, 8th Grade, 9th Grade, 10th Grade, 11th Grade, 12th Grade

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Illuminations (National Council of Teachers of Mathematics)

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