machinery

'Pulling Up' explores the benefits and uses of the pulley. RobbO and RobbEE need to build a pulley to move the engine in a car. They find lots of other uses for a pulley too.

Provides quick simple machine experiments using seesaws, wheels, pulleys, and more.

Children learn about machinery and work through an animated courtroom drama.

Simple text and illustrations describe what a cherry pickers is and how it works.

Describes the parts of a backhoe and how they work.

Presents twelve experiments that answer simple questions about force fields, levers, pulleys, wheels and axles, inclined planes, screws, and wedges and require little help from adults.

Introduces the reader to a group of "impossible" machines and provides instructions and diagrams for building and testing them.

Maze puzzles challenge readers to find their way through such places as a large factory, medieval castle, and circus bigtop.