Incoming Resources
- Machines, Wendy Baker & Andrew Haslam
- Machines go to work in the city, William Low
- Loaders, by Charles Lennie
- The unofficial LEGO technic builder's guide, Paweł "Sariel" Kmieć
- The Usborne big book of big machines, written by Minna Lacey ; illustrated Gabriele Antonini ; edited by Jane Chisholm and Jenny Tyler
- Raising a bag of toys, pulley vs. inclined plane, by Mari Schuh
- Machines go to work, William Low
- Levers are machines, Douglas Bender
- The Usborne book of machines that work, Caroline Young and Harriet Castor
- How things work, the inner life of everyday machines, Theodore Gray ; photographs by Nick Mann
- Gone ice fishing, lever vs. screw, by Mari Schuh
- Cranes, by Charles Lennie
- Inclined planes are machines, Douglas Bender
- Sloping up and down, the inclined plane, written by Felicia Law and Gerry Bailey ; illustrated by Mike Spoor
- Simple machines, by D.J. Ward ; illustrated by Mike Lowery
- Scrapers, by Derek Zobel
- Making a salad, wedge vs. inclined plane, by Mari Schuh
- Wedges are machines, Douglas Bender