This book introduces the scientific principles of magnets, examining such topics as their strength, magnetic poles, and the making of magnets.
School Library JournalK-Gr 2--Two titles that offer basic information on magnetism and animal locomotion. In both of them, double-page chapters include a boxed "See for yourself" section that gives suggestions for simple experiments and exercises. For example, Magnets suggests testing for magnetic and nonmagnetic objects and Movement offers ways to group animal motion--through air, on land, etc. These activities are safe and easy--little or no adult supervision is required. Interspersed throughout each book are informational bits--magnetism can work through nonmagnetic materials such as paper; muscles can only pull, they cannot push. Also, questions that could lead to discussion are posed, such as "Does your family recycle cans?" or "Can you think of any birds that can't fly?" Still, the information in these titles can easily be found elsewhere. The full-color photographs are plentiful, but not spectacular. Appended glossaries are superfluous. Indexes and further reading lists are more helpful. Select these titles only where additional information is needed. Otherwise, Anita Ganeri's Moving (Raintree, 1996) and Franklyn M. Branley's What Makes a Magnet? (HarperCollins, 1996) should suffice.--Anne Chapman Cal-laghan, Racine Public Library, WI
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