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Fractal Pyramid with Continuous Cross-section by ricktu Feb 20, 2016
Three-Sided Cylinder Coin by mathgrrl Jan 20, 2018
Pythagorean Theorem by mshscott Feb 9, 2014

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Math Spinner Enhanced (fast print, no support) by pauloblank Sep 5, 2014

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Math Spinner by jdharris Sep 13, 2017
Five screw-puzzles by George Hart by GeorgeHart Nov 18, 2013

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Math Spinner Toy by christinachun Nov 16, 2013

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Abacus, Soroban, そろばん, Suan Pan, 算盘, Chinese, Japanese by lgbu Dec 27, 2017
Math Gear(s) by WorksBySolo Nov 18, 2013

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Teach Angles by Making a Modular Protractor! by carlosvaras Aug 25, 2016

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Trammel of Archimedes, Snap, Ellipsograph, Ellipse, Math, Model by lgbu Dec 6, 2017
Triangle Properties Learning Aid by MCmaks Sep 6, 2017
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