4

Maddy's Alaska Diary

4

Maddy's Washington Diary

4

Maddy's Montana Diary

4

Maddy's Washington, D.C. Diary

3

Christopher Columbus

3

Cinco de Mayo

4

Maddy's Oregon Diary

3

Straits of the World

4

Maddy's South Carolina Diary

4

Chip's Tips on United States

4

Chip's Tips on Canada

4

Maddy's Idaho Diary

3

Neil Armstrong

3

Space Exploration

3

Fjords of the World