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How Do You Lift a Lion?
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Wheels Make the World Go...
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Hide and Go Beak
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You Wouldn't Want to Live...
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Simple Machines Made Simple
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Explore Simple Machines!:...
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How Things Move
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Make This!: Building Thinking...
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Inclined Planes
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Simple Machines: A Sesame...
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Franny's Fix-It Shop
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Smash!: Wile E. Coyote...
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Pulleys Pull Their Weight:...
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Simple Machines
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Simple Machines at the...
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Screws Keep Things Secure:...
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Making Machines with Pulleys
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Levers
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The Great Mathemachicken 1:...
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