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Simple Machines by Learning Rabbit
$1.99
iPad
Ages: 9-12
Teaches: Science, taking things apart, physical science
CTR Review
02/21/2014
Solid content meets dry interactive design, in this physical science textbook designed to introduce older children (upper elementary and middle school age) to six machines (lever, pulley, wheel and axle, inclined plane, screw, and wedge). Each is explained by way of print (with s...
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