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Wikijunior:How Things Work/The Six Simple Machines - Wikibooks, open books for an open world

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How to Set Up a Double Pulley System

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Interactive Notebook Levers- can also be used for angles

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innen: Business Insider

7 Animated GIFs That Will Make You Instantly Understand Trigonometry

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Pascal's triangle - a great number triangle whose entries are coefficients of a binomial expansion

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Fabulous ways to add some science decor to your classroom!

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