Simple Machines - Science Emergent Readers Author:Susan Canizares Have you seen a simple machine? There are springs for hopping and springs for popping. There are levers for lifting and levers for shifting . . . Ramps and pullies, gears and springs, simple machines do so many things? Filled with colorful photographs of children and machines. A back page has definitions of gears, levers, pulleys, ramp... more »s, and springs for you to read to your childre or for a child to read by himself or herself.« less