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

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

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

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

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

On the eve of Holland's liberation from the Nazis, Anton, a young man from a lower-class family stands on the bank of an Amsterdam river and recalls the golden summer of 1939, which he spent with David, a self-assured, affluent teenager, as they train as oarsmen on the river under the tutelage of a German coach.

Gives instructions for simple experiments with mirrors that illustrate their characteristics and their many uses.

Gives instructions for making several kinds of objects to sail or glide in the wind and demonstrate the basic principles of flight.