"Simple text, full color photographs, and illustrations introduce beginning readers to the basic principles of levers. Developed by literary experts for students in grades 4 through 6"--Provided by publisher.
- ISBN10 162617475X
- ISBN13 9781626174757
- Publish Date 1 August 2009
- Publish Status Active
- Imprint Blastoff! Readers
- Format Paperback (US Trade)
- Pages 24
- Language English