Science spirals

Explains how to build and perform activities with models of towers and bridges to illustrate the principles used in designing and constructing such structures.

Text, illustrations, and experiments demonstrate the capabilities of wheels on vehicles, in pulleys and gears, and as windmills and waterwheels.

Instruction for a variety of simple experiments, using easily available materials, that examine how and why things, people, and animals keep their balance.

Instructions for a variety of simple experiments, using easily available materials, that examine how and why things stretch, spring, and bounce.

Gives instructions for simple experiments that answer questions about the characteristics of magnets and how they work.