Location | Call Number | Serial Data | Published | Status | Date Due |
---|---|---|---|---|---|
Englewood School | 621.8 CHA | Available |
Includes index.
All people have jobs to do. Some jobs take a lot of energy. Simple machines help people get jobs done without working too hard. There are six kinds of simple machines: inclined planes, levers, pulleys, wedges, screws, and wheels and axles.