How do we use slopes in our homes? Why is it easier to turn a screw than hammer in a nail? Full simple experiments help you find the answers to these questions.
This is Book 4 in the Simple Technology Series. See all Simple Technology books here.
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Mandy Suhr is a qualified primary school teacher and experienced children's writer and publisher.
More about Mandy SuhrCarmela LaVigna Coyle lives out west in Colorado with her husband, Mike, their two college-age children, and her lovable, cuddly, precocious pup that gangly answers to the name of lulu. Mike Gordon's award-winning illustrations span fiction, non-fiction, entertainment, and educational books worldwide. He lives in Santa Barbara, California.
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