Incoming Resources
- Simple machines, by Allan Fowler
- Inclined planes, Andrea Rivera
- Smash!, Wile E. Coyote experiments with simple machines, by Mark Weakland ; Illustrated by Christian Cornia
- Pulleys, Andrea Rivera
- Pulleys, by Erika S. Manley
- Screws, by Kirsten Chang
- Wheels and axles, Andrea Rivera
- How things work, the inner life of everyday machines, Theodore Gray ; photographs by Nick Mann
- Wedges, by Erika S. Manley
- Levers, by Erika S. Manley
- Inclined planes, by Kirsten Chang
- Ramps and wedges, David Glover
- Wheels and axles, by Kirsten Chang
- Pulleys and gears, David Glover
- Levers, Andrea Rivera