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Paperback Machines: Grades 7-12 Book

ISBN: 0941008991

ISBN13: 9780941008990

Machines: Grades 7-12

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

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Format: Paperback

Condition: New

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