3

Magnetism

4

Maddy's North Carolina Diary

3

Confucius

4

Maddy's Delaware Diary

4

Niagara Falls

3

Nathan the Whale

3

Wetlands of the World

4

The Plains Indians People

2

Treeless Plains! Steppe

3

Sacagawea

2

Prince Troy's Voyage

2

At the Farm

2

Giddy Up, Cowgirls!