machinery

Photographs and text describe such work-saving machines as a crane, jack hammer, bulldozer, and back hoe.

In easy text tells about machines for moving, moving on a ramp, pulley, with shovels and scoops, on wheels, up and down, moving people, a machine.

Includes sections on: Plants and Aminals -- The Past -- Science and Technology -- How People Live -- Transportation -- Planet Earth -- Out in Space -- Arts and Sport. Dinosaurs, reptiles, mammals, steam engines, machines, books.

Depicts types of construction equipment, such as the jackhammer, concrete mixer, and mobile crane, and describes how each functions in the process of building.

Explores the inner workings of vehicles, computers, cameras, and electronics, providing illustrations and diagrams.

Simple experiments demonstrate how everyday machines use the principles of motion and how forces such as friction and gravity affect movement.

Bill Nye the Science Guy answers questions about simple machines, and conducts experiments that demonstrate how gears make work easier and increase speed and energy, and show how to make a simple pulley.

A collection of four books by Caldecott Medal winner Virginia Lee Burton which feature characters who become heroes through determination and the ability to adapt to change.

The inhabitants of Mammoth Island explore how magnets work and the many ways in which they can be used.

Describes five simple machines--lever, wheel, inclined plane, screw, and wedge--and explains how they work.