Incoming Resources
- Forces and movement, by Richard Robinson
- Pushing and pulling, Natalie Hyde
- Energy, by Kay Manolis
- Energy makes things happen, by Kimberly Brubaker Bradley ; illustrated by Paul Meisel
- Push and pull, by Patricia J. Murphy
- Trampolines, by Jenny Fretland VanVoorst
- Push and pull, the science of forces, Jay Hawkins
- Changing direction, by Natalie Hyde
- Energy, [written by] Joseph Midthun ; [art by] Samuel Hiti