Incoming Resources
- Mechanisms and mechanical devices sourcebook, Neil Sclater, Nicholas P. Chironis
- Let's look at monster machines, John Allan
- Levers and pulleys, produced by Disney Educational Productions ; series producers, Kathy Kachta, Dan Staedler
- Inclined planes, by Hope Collander
- Wedges, by Greg Roza
- How things work, the inner life of everyday machines, Theodore Gray ; photographs by Nick Mann
- Levers, Dwayne Stilwell
- Pulleys, Madison Miller
- Simple machines, Rebecca Rissman
- How things move, by Helen Gregory
- The kids' book of simple machines, cool projects & activities that make science fun, Kelly Doudna