"Simple machines are around us all the time and we use them every day. Many are built into complex machines, but the simple machine is still there doing its job. Discover how simple machines enable practically everything around us to work, allowing us to travel in wheeled vehicles, lift very heavy objects, put things together, and take things apart."-- Back cover.

Includes index.

What is a machine? -- It's simple! -- Putting machines to work -- It's not all fun and games -- The wheels on the bus -- Ups and downs -- A slippery slope -- All screwed up -- Putting it together -- World-changing machines -- Power to the people -- Would you want to live without simple machines?