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The top documents tagged [levers screws]
Simple machines 2
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©A. Weinberg Simple Machines SOL 3.2 By Ms. Weinberg
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Have you ever : Tried to take a super heavy object up a flight of stairs ? WHAT HAPPENED
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Simple Machines
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Have you ever : Tried to take a super heavy object up a flight of stairs ? WHAT HAPPENED
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By Sadie Entwisle, Sarah Ross, and Mandy McCandless
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