Smithsonian Institution Books
Fun Machines
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Provides instructions for making such devices as a tin-can telegraph, crystal radio, and kaleidoscope, and suggests a variety of related experiments and other activities.
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Mystery and magic
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Presents a variety of activities, experiments, and simple tricks that explore principles of electricity, physics, biology, and more.
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Things That Grow
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Experiments and other scientific activities demonstrate how crystals, plants, fruit flies, and other life forms grow.
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