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Barnes and Noble

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Machines: Grades 7-12

Machines: Grades 7-12

Current price: $21.95
CartBuy Online
Machines: Grades 7-12

Barnes and Noble

Machines: Grades 7-12

Current price: $21.95
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Size: OS

CartBuy Online
*Product information may vary - to confirm product availability, pricing, shipping and return information please contact Barnes and Noble
Employ the TOPS advantage: build fun stuff with simple things. Devise levers, pulleys, reinvent the wheel, check gear ratios, calculate horsepower, win a tug-of-war. Use spring scales to weigh loads, measure effort, and calculate efficiency. Discover that machines save effort, but never reduce work!
Employ the TOPS advantage: build fun stuff with simple things. Devise levers, pulleys, reinvent the wheel, check gear ratios, calculate horsepower, win a tug-of-war. Use spring scales to weigh loads, measure effort, and calculate efficiency. Discover that machines save effort, but never reduce work!

More About Barnes and Noble at The Summit

With an excellent depth of book selection, competitive discounting of bestsellers, and comfortable settings, Barnes & Noble is an excellent place to browse for your next book.

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