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Though most of us don’t think about if very often, simple machines-from ramps and levers to wheels and axles-are 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. Book jacket., Though most of us don’t think about it very often, simple machines are all around us, from ramps and levers to wheels and axles. They make our lives easier in many ways. It would be awfully difficult to ride a bike without the wheel and axle. Readers find out how some of our favorite simple machines work, and how they have changed our world.
Ex Library book
Original price was: $15.00.$5.00Current price is: $5.00.
1 in stock
