machinery

Describes wedges, including the history, function, and everyday uses.

Describes screws, including the history, function, and everyday uses.

Describes pulleys, including the history, function, and everyday uses.

Describes levers, including the history, function, and everyday uses.

Describes inclined planes, including the history, function, and everyday uses.

Discusses how mechanical engineers design and innovate machines, and explains the steps they follow in the engineering design process.

Explores nine jobs in the mechanic and repair industry. Lists typical job duties and identifies where and how to receive the necessary education and training.

An exploration of simple machines that discusses inclined planes, wedges, screws, levers, pulleys, and wheels and axles, and includes instructions for related experiments and activities.

Presents information on the machines that are used in road and house construction, forestry, and mining, in simple text with photographs, and includes cement mixers, excavators, bulldozers, dumptrucks, tractors, and cranes.

Discusses how simple machines found in health tools, such as the scalpel, forceps, wheelchair, ramp, and oxygen tank, help people do their work.