Incoming Resources
- Wedges, Sarah Tieck
- Wheels, Chris Oxlade
- Simple experiments with inclined planes, Chris Oxlade
- Bulldozers, David and Penny Glover
- Inclined planes to the rescue, by Sharon Thales
- Simple experiments with levers, Chris Oxlade
- Wedges, Andrea Rivera
- Levers, Chris Oxlade
- Inclined planes, Andrea Rivera
- Loaders, by Charles Lennie
- Pulleys, Sarah Tieck
- Get to know pulleys, Karen Volpe
- Mechanical engineering in the real world, by M.M. Eboch
- Machines go to work in the city, William Low
- Machines go to work, William Low
- Pulleys, Andrea Rivera
- Simple experiments with pulleys, Chris Oxlade
- Wheels and axles, Sarah Tieck
- Wheels and axles to the rescue, by Sharon Thales
- Move it! Work it!, a song about simple machines, by Laura Purdie Salas ; illustrated by Viviana Garofoli
- Screws, Andrea Rivera
- Pulleys, by Valerie Bodden
- Levers, Andrea Rivera
- How things work, the inner life of everyday machines, Theodore Gray ; photographs by Nick Mann
- Castle under siege!, Andrew Solway
- Cranes, by Charles Lennie
- Levers, by Valerie Bodden
- You wouldn't want to live without simple machines!, written by Anne Rooney ; illustrated by Mark Bergin
- Simple experiments with wedges, Chris Oxlade
- Sloping up and down, the inclined plane, written by Felicia Law and Gerry Bailey ; illustrated by Mike Spoor
- Get to know inclined planes, Jennifer Christiansen
- Inclined planes, Sarah Tieck
- Simple machines, Cody Crane
- Levers to the rescue, by Sharon Thales
- Simple machines, by JoAnn Early Macken
- Pulleys, Chris Oxlade
- Wedges and ramps, Chris Oxlade