We are working on a larger list of fun math things, but these are definitely in the top 10.
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- Calipers with a proportional arm. Build, use, figure out how they work!
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- Mirror book – open and close to make all the regular polygons, make patterns, play.
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- Unit circles – with different rings for coordinates, radians, quadrants and degrees. Mini right triangles to recall connection to pythagorean theorem.
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- Quadrant. Ancient navigation tool, way to measure the height of distant objects. Relies on the plumb line and runs on gravity.
