With some easy-to-find materials and this fun-filled book, children can turn batteries, bulbs, and wire into traffic lights, telegraphs, burglar alarms, and 12 other electrical devices. An 50 imaginative experiments provide an action-packed way to learn more about electricity. A Boston Children's Museum Activity Book. Black-and-white illustrations.
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With some easy-to-find materials and this fun-filled book, children can turn batteries, bulbs, and wire into traffic lights, telegraphs, burglar alarms, and 12 other electrical devices. An 50 imaginative experiments provide an action-packed way to learn more about electricity. A Boston Children's Museum Activity Book. Black-and-white illustrations.
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