simple machines

Introduces students in grades five through eight to key concepts in physics, focusing on simple machines, using visuals and experiments to discuss work, forces, levers, the wheel and axle, pulleys, the inclined plane, and compound machines. Includes review segments.

Color illustrations introduce levers, wheels, pulleys, and inclined planes, explain how they work, and show how they are used everyday.

"Step-by-step instructions for experiments pertaining to forces, motion, and simple machines"--Provided by publisher.

Describes the six simple machines: the lever, the wheel and axle, the pulley, the ramp, the wedge, and the screw.

"Sloth and Sengi are friends. They have grown up together in the zoo, and know every bit of their enclosure. And, frankly, they are a little bored with it. So they begin to plan an escape, with the help of some simple machines... This book introduces such simple machines as levers, gears, planes, and pulleys."--OCLC.

Presents facts and photos about how screws work. Includes a glossary, index, and resources for further information.

Simple text and photographs introduce readers to how levers work to shift the angle of force and make work easier.

Simple text and color photographs depict examples of inclined planes in daily life and how they work.

Explores forces and their role in simple and complex machines, at work, and in conjunction with energy, gravity, friction, and magnetism. Includes biographical sketches, color photographs, a glossary, and further resources.

From simple machines to Newton's laws of motion, the concepts in these science projects for future engineers will provide a rich foundation for science fairs, experiments, or classroom activities.