Protractor Angle Demo

Author:Caitlyn Zitka, rcsellers

Just a quick demonstration of why there are two scales on a protractor. Many students don't seem to have a good conceptual grounding in how they should reason through which scale to use.

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拼砌四邊形 - 工作紙
Linear Approximations
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bewijs stelling van Pythagoras
רישום חופשי

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