<p/><br></br><p><b> About the Book </b></p></br></br>Takes a look at ramps and wedges, what they are, how they are used, and how they help us.<p/><br></br><p><b> Book Synopsis </b></p></br></br>Each book in this series focuses on a type of simple mechanism and examines how it is used to make different toys work. This book examines ramps and wedges, and uses simple language and labeled photographs to explain the scientific principles behind their use.
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