3

Rosa Parks

4

Maddy's Oregon Diary

4

Mount Rushmore

4

Maddy's Alabama Diary

3

Canyons of the World

3

Doommuck the Discombobulated Boogie-Monster

2

Flint Goes to the Movie Theater

4

Maddy's California Diary

4

Maddy's Utah Diary

4

Chip's Tips on Botswana

4

History of Carnival Rides

4

America in the 20th Century

3

Martin Luther King, Jr.