4
Maddy's Nebraska Diary
2
Ed and the Egg
2
Dinosaurs
3
Space Exploration
4
Maddy's Mississippi Diary
4
Chip's Tips on Mauritius
3
Librarian
4
Chip's Tips on Namibia
4
Chip's Tips on Finland
3
Troy's Lease a Toy
3
Friction
4
Famous Americans: Thomas Jefferson
4
Maddy's Delaware Diary
4
Maddy's Missouri Diary
3
Astronauts
3
Lyla and the Big Red Lollipop
2
Silly Hoot's Hilarious Hooves
4
Jewels, Gemstones, and Birthstones
3
A Capitol Dream
4
Gateway Arch
4
The Ghost of Count Otto and the Pumpkin Wizard
2
The Hen Who Wanted Ten Pens
3
Christopher Columbus
4
Maddy's Washington, D.C. Diary
3
The Disappearing Cow
3
Trenches of the World
4
Maddy's Kansas Diary
3
Mercury
2
Flint Goes to the Library
3
Cody Learns to Say Good-Bye