Synopsis
Uses everyday examples to describe levers as simple machines used to lift, push, or move a load.
Children's Literature
Using clear, everyday examples of levers, the author succinctly defines and explains the physics involved. A simple graphic design shows the parts of a lever. She then explains first-class, second-class, third-class and compound levers. She uses a piano to show how this simple machine is a part of a complex machine. An experiment using common and inexpensive items provides the student with a hands-on way to understand the concept. Words to know, Internet sites, a brief bibliography and an index are included. This is one of six books in the high quality "Understanding Simple Machines" series, which is part of "The Bridgestone Science Library." 2001, Bridgestone Books/Capstone Press,