940790
9780895776945
Here is a fascinating guide to the world of machines and technology, packed with hundreds of hands-on experiments for the whole family. Activities are designed to use everyday materials that are inexpensive and easy to obtain.Ardley, Neil is the author of 'How Things Work 100 Ways Parents and Kids Can Share the Secrets of Technology' with ISBN 9780895776945 and ISBN 0895776944.
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