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