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Book, 2015
Current format, Book, 2015, First edition., Available .
Book, 2015
Current format, Book, 2015, First edition., Available . Offered in 0 more formats
Machines help make work easier, like when you need to lift something heavy or reach way up high. There are six simple machines: the lever, the wheel and axle, the pulley, the ramp, the wedge, and the screw. Can you adjust a seesaw to lift an elephant? What happens when you combine two or more simple machines? Read and find out!
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