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Baby Professor
pubblicato da
Speedy Publishing LLC
Learn about the complex mechanics that come into the creation of simple machines. Discussed in the pages of this book are the six types of simple machines - screw, inclined plane, wedge, pulley, lever, wheel and axle. There will be detailed explanation of how each of these machines are created, and used to make work easier. This educational book is ideal for third graders.
Scrivi una recensione per "Simple Machines Energy, Force and Motion Kids Ages 8-10 Science Grade 3 Children's Physics Books"
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