Build a Better Mousetrap: Make Classic Inventions, Discover Your Problem Solving Genius, and Take the Inventor's Challenge by Ruth Kassinger

Build a Better Mousetrap: Make Classic Inventions, Discover Your Problem Solving Genius, and Take the Inventor's Challenge

Ruth Kassinger

128 pages • missing pub info (editions)

nonfiction childrens science technology medium-paced
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Discover the secrets behind some amazing inventions Through observation, experimentation, and perseverance, humansthrough the ages have managed to solve a whole array of perplexingproblems. These solutions have included such incredible invention...

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