Inclined Planes Ramp It Up: Simple Machines for Kids by Andi Diehn, A ramp is another word for an inclined plane, and an inclined plane is one of six simple machines that are designed to make work easier. Whether you're lifting or pulling, or pushing, these tasks are more efficient when you use a simple machine. Learn the science and engineering behind this machine. Paperback, 32 pages. Recommended forages 5 to 8 years old.
