101 Physics Tricks

School Library Journal

Gr 3-6-Principles of physics are introduced through hands-on activities and projects that demonstrate physical phenomena. The entries under the heading ``Puff, Squeeze, Bang, Blow'' deal with forces, air, and sound; ``Click, Flash, Buzz, Whirr'' address electricity and magnetism; and ``Sizzle, Freeze, Bubble, Glow'' cover heat, light, and chemical energy. Topics are presented that emphasize the relationship of science and technology to everyday life. Information is stated in clear, easy-to-understand terms and is complemented by numerous full-color drawings and diagrams. The activities are relatively simple and utilize readily obtained materials. The labeled diagrams and directions are detailed enough for the projects to be completed successfully. Safety precautions and adult supervision are marked where needed. Rather than the ``cookbook'' format frequently employed in such books, Cash encourages an open-ended approach by posing questions that lead readers to additional investigation. The attractive, clear presentation and nice balance of information on basic scientific principles and related technological developments make this an appealing additional title.-Carolyn Angus, The Claremont Graduate School, CA

Chris Sherman

Cash has divided his activities into three sections: "Puff, Squeeze, Bang, Blow," which contain exercises that demonstrate laws of forces, air, and sound; "Click, Flash, Buzz, Whirr," featuring exercises that explain electricity and magnetism; and "Sizzle, Freeze, Bubble, Glow," containing exercises that explore heat, light, and chemical energy. Each section begins with a brief, clear explanation of basic principles related to the subject, and discussion of the devices that may be used to demonstrate those laws. Information on why and how an activity works is also included. Directions for conducting the experiments are easy to follow, and the accompanying full-color diagrams and illustrations are large and nicely labeled. While directions for many of these activities are available in other sources, the organization and the clarity of Cash's roundup make it a particularly worthwhile resource. Notes for parents and teachers are supplied.