Simple Machines: Though most of us dont think about it very often, simple machinesfrom ramps and levers to wheels and axlesare all around us. They make our lives easier in many ways. It would be awfully hard to ride a bike without the wheel and axle! Find out how some of our favorite simple machines work, and how they have changed our world
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Simple Machines: Though most of us dont think about it very often, simple machinesfrom ramps and levers to wheels and axlesare all around us. They make our lives easier in many ways. It would be awfully hard to ride a bike without the wheel and axle! Find out how some of our favorite simple machines work, and how they have changed our world
Read Less
Add this copy of Simple Machines: Discover Science Through Facts and Fun to cart. $13.93, very good condition, Sold by ThriftBooks-Atlanta rated 5.0 out of 5 stars, ships from Austell, GA, UNITED STATES, published 2008 by Gareth Stevens Publishing.
Add this copy of Simple Machines: Discover Science Through Facts and Fun to cart. $40.57, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Santa Clarita, CA, UNITED STATES, published 2008 by Gareth Stevens Pub Learning li.
