Wheels Make the World Go...
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Pulleys Pull Their Weight:...
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Inclined Planes Ramp It Up:...
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Screws
Louise A Spilsbury
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Inclined Planes
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Wheels and Axles
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Pulleys
Louise A Spilsbury
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Wedges
Louise A Spilsbury
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Buen Trabajo: Herramientas...
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Understanding Coding with...
Patricia Harris Ph D
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Good Work: Simple Tools
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Simple Machines in the...
Gillian Gosman
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Simple Machines at School
Gillian Gosman
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Simple Machines in Your Home
Gillian Gosman
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Force and Motion
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