9 items
Simple machines
Dana Meachen Rau.
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Examines ancient machines with timelines and photos, including how they have been used throughout history.
The kids' book of simple machines
Kelly Doudna.
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Format:
Introduces six simple machines, describing how they work in more complex machinery and how they are used every day.
Explore Simple Machines! : With 25 Science Projects for Kids
Yasuda, Anita/ Stone, Bryan (ILT)
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Format:
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