Explore how simple machines shape our world in this fun, illustrated journey for young readers.
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Learn about how simple machines enable practically everything around us to work. This series takes readers (Ages 8-12) on a historical journey, examining how people coped in the past and how they developed ingenious ways to make life safer and less unpleasant. Each book features full-color cartoon-style illustrations and hilarious speech bubbles to heighten interest, making the series attractive even to reluctant readers.Simple machines are around us all the time and we use them every day. You m...