Simple Machines: Wheels, Levers, and Pulleys
We use simple machines every day without realizing it. Teeth are wedges and so are knives, forks, and thumbtacks. Many toys are simple machines. Slides are inclined planes, and seesaws are levers. This introduction to levers, wheels, pulleys, inclined planes, and more explains how simple machines simplify our lives.
Book Info
Ages: 5-7
Read time: 5-20 mins
AR LEVEL: 4.0
LEXILE©: 580L
Ages: 5-7
Read time: 5-20 mins
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