Incoming Resources
- Wheels, wings, and motors, Robert Coupe
- Wheels around, Shelley Rotner
- Wheels and axles, Erinn Banting
- Simple machine experiments using seesaws, wheels, pulleys, and more, one hour or less science experiments, Robert Gardner
- Wheels, Chris Oxlade
- What are wheels and axles?, by Helen Frost; consulting editor, Gail Saunders-Smith
- Making tracks, Steve Parker
- The story book of wheels,, by Maud and Miska Petersham
- Wheels and axles, by Anne Welsbacher