Introduces six simple machines, describing how they work in more complex machinery and how they are used every day.

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This is a unique interactive guide to understanding simple machines and mechanisms. Each page introduces you to a key mechanical principle that you put into practice by building one or more working models. This hands-on approach makes it easy to understand how these principles work and how they can be applied to everyday objects, such as cars, bicycles cranes and seesaws.

Introduces the wheel and axle as a simple machine that can make it easier to move heavy objects, as well as to flatten dough.

For use in schools and libraries only. Includes an assortment of activities using such simple machines as pulleys and levers.