Incoming Resources
- The gravity tree, the true story of a tree that inspired the world, written by Anna Crowley Redding ; illustrated by Yas Imamura
- The Joy of science, The Teaching Company
- The gravity tree, the true story of a tree that inspired the world, written by Anna Crowley Redding ; illustrated by Yas Imamura
- Gravity is a mystery, by Franklyn Branley ; illustrated by Edward Miller
- Space technology, landers, space tourism, and more, by John Wood
- Gravity, by Kay Manolis
- Gravity, Jason Chin