Simple machines

Simple machines

By Deborah Hodge

Subjects: Juvenile literature, Machines simples, Simple machines, Expériences, Experiments, Ouvrages pour la jeunesse

Description: "Thirteen experiments about simple machines - levers, wheels, axels, pullies, wedges and screws - teach kids basic science. Full-colour photographs and step-by-step instructions explain each activity, so that kids can make most of the machines with minimal help from adults" Cf. Our choice, 1997-1998.

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