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 More
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. $12.94, good condition, Sold by ThriftBooks-Baltimore rated 4.0 out of 5 stars, ships from Halethorpe, MD, UNITED STATES, published 2008 by Gareth Stevens Pub Learning library.
Add this copy of Simple Machines: Discover Science Through Facts and Fun to cart. $86.64, new condition, Sold by Just one more Chapter rated 4.0 out of 5 stars, ships from Miramar, FL, UNITED STATES, published 2008 by Gareth Stevens Pub Learning li.
