Description
Following the step by step instructions, a child can learn how to make an air-screw, mariner’s compass, simple siphon, pinhole camera, thermometer, invisible ink, simple electric motor, periscope, boomerang, 3-D viewer, and plenty of other interesting things. The exercises and demonstrations also show how to burn steel, find a center of gravity, make a vacuum with a radish, electrify a bubble, reflect sound, make water denser, compress air under water, carry a column of water, make a liquid sandwich, watch a pulse at work, and so forth. Every article gives some background information together with an explanation of why the experiment works the way it does.
Over 100 photographs show children performing the experiments, and a lot of line drawings depict the materials used, the set-up of equipment, and the desired result.