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
