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