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Simple Machines
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$ 41.70| /SIMPLE MACHINES BOOKS SET OF 6
Learn all about simple machines! From wedges, wheels and axles, and screws to inclined planes, levers, and pulleys--this series has beginner reader...
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$ 49.99| /SIMPLE MACHINES SET OF 5
Build all 5 Simple Machines at the same time! Students can construct, examine and explain simple machines to develop a deeper understanding of how ...
View full details$ 49.99| /Sale
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