Book 26

Experiments with Air

by Ray Broekel

Published 1 May 1988
Presents experiments which demonstrate the properties of air.

Book 26

Experiments with Light

by Ray Broekel

Published 1 April 1986
A discussion of the nature and properties of light, with experiments.

Book 80

Sound Experiments

by Ray Broekel

Published 1 March 1983
Briefly discusses sound, pitch, sound travel, sound waves, vibration, frequency, length, and thickness, with simple experiments to demonstrate each concept.

New True Books

by Clark Broekel and Ray Broekel

Published 1 February 1981

Illustrates some basic principles of science, based on experiments and tricks using straws, paper, drinking glasses, and coins.

Experiments with Water

by Ray Broekel

Published 1 March 1999
Presents experiments which demonstrate the properties of water.