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Author
Series
Publisher
Children's Press
Pub. Date
[2012]
Language
English
Description
The world is filled with machines that make our lives easier. Many of these machines are run by electricity, but you also can use your own power to run machines as well. You power your bicycle you open a door you move a box. Simple machines are devices with very few parts that help us move objects. Learn about the basic simple machines that we use every day.
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