Levers - Early Bird Physics Author:Sally M. Walker, Roseann Feldmann Do you know what a lever is? How can a lever help you? Through simple experiments and clear explanations, understand how this simple machine functions and how it can make the work that you do easier. — Book Features Be a Word Detective • Charts/Graphs/Diagrams • Note to Adults • Full-Color Illustrations • Full... more »-Color Photographs • Further Reading • Glossary • Index • Table of Contents • Websites« less