simple machines

A photographic introduction to ramps for beginning readers, explaining what ramps are and how they work, providing examples of ramps, and looking at ramps and complex machines.

A photographic introduction to screws for beginning readers, explaining what screws are and how they work, looking at examples of screws, and discussing the use of screws in complex machines.

A photographic introduction to pulleys for beginning readers, explaining what pulleys are and how they work, looking at different types of pulleys, and discussing pulleys and complex machines.

A photographic introduction to levers for beginning readers, explaining what levers are and how they work, looking at classes of levers, and discussing the use of levers in complex machines.

Introduction to wheels, one of the simple machines.

Demonstrates a variety of techniques used to move heavy objects.

Describes work and simple machines in everyday surroundings, and presents experiments that explain how machines make work easier.

Introduces the science of how wheels and axles work and describes different kinds of wheels and the use of wheels throughout history.

Introduces the science of how levers work and describes different kinds of levers and the jobs they do.

Provides a definition of what machines are, and present the lyrics to a song that can help children remember the science of six simple machines, sung to the tune of "Kookaburra.".