Keep It Simple, Rapunzel!:...
Thomas Kingsley Troupe
Buy from $12.66
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Operation Cupcake: How Simple...
Buy from $19.46
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Wheels Make the World Go...
Andi Diehn
Buy from $20.47
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Screws Keep Things Secure:...
Andi Diehn
Buy from $20.47
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Inclined Planes Ramp It Up:...
Andi Diehn
Buy from $20.55
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The Great Mathemachicken:...
Nancy Krulik
Buy from $7.99
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Experiments for Future...
Robert Gardner,
Joshua Conklin
Buy from $15.93
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Simple Machines: Wheels,...
David A Adler
Buy from $16.43
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Pulleys Pull Their Weight:...
Andi Diehn
Buy from $20.70
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Ancient Machines: From Wedges...
Michael Woods,
Mary B Woods
Buy from $12.23
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Mazie's Amazing Machines
Sheryl Haft
Buy from $15.88
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Move It! Work It!: A Song...
Laura Purdie Salas
Buy from $75.65
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Levers
Andrea Rivera
Buy from $34.91
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Making Machines with Levers
Chris Oxlade
Buy from $8.99
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Making a Salad: Wedge vs....
Mari C Schuh
Buy from $10.11
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How Do You Lift a Lion?
Christy Grant (Editor)
Buy from $9.98
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Work & Simple Machines
Jon Richards
Buy from $13.33
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Fred Flintstone's Adventures...
Mark Weakland
Buy from $27.54
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A Simple-Machine Scavenger...
Jenna Lee Gleisner
Buy from $59.97
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Wedges in My Makerspace
Tim Miller
Buy from $44.04
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Making Machines with Screws
Chris Oxlade
Buy from $13.34
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Wheels and Axles in My...
Tim Miller
Buy from $8.99
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Pulleys and Gears
David Glover
Buy from $10.26
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Machines and How They Work
Harvey Weiss
Buy from $10.00
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