Simple Machines, Grades 4-6 by On The Mark Press
Students will understand how simple machines work and discover that working with tools means putting simple machines into action. Study levers, screw, wedge, wheel and axle, friction, compound machines, pulley, and the inclined pane with these activities. Includes teaching suggestions, evaluation forms, scientific method, experiments, invention conference and a glossary of terms, plus answer key. 96 pages. by On The Mark Press

Grade Level: 4, 5, 6