Introduces six simple machines, describing how they work in more complex machinery and how they are used every day.

Read and find out about six simple machines—the lever, the wheel and axle, the pulley, the ramp, the wedge, and the screw—in this colorfully illustrated non

Building a fort in the backyard, a grandfather and granddaughter get help from six simple machines: lever, pulley, inclined plane, wheel and axle, screw, and we

"Describes how simple machines are used in construction and how they make work easier. Includes experiments"--Provided by publisher.