Frank Carlson Library

"How do you keep a door from closing? Try using a wedge! Wedges are one of the six simple machines that help make work easier by using mechanical advantage. In Wedges Make a Point: Simple Machines for Kids, readers ages 5 to 8 learn how a wedge's shape makes it perfect at stopping something heavy from moving, and separating material to split something--like banana bread--apart. Glossary, photos, and a hands-on activity make this book fundamental for...

Presents experiments, most of which use water, to demonstrate properties of shadow and light.

Presents various optical illusions for the reader to perform which illustrate how visual perception can be distorted.

Presents experiments to demonstrate inertia--the tendency of a moving thing to keep moving and of a thing standing still to stay still.

Provides instructions for making or using windmills, pinwheels, kites, and other devices that need air to set them in motion.

Introduces the concepts of electricity through a variety of projects, experiments, games, and toys.

Explores the wheel through projects involving rollers, carts, wagons, and other devices using wheels to function.