4

The Plains Indians People

2

Treeless Plains! Steppe

3

Coastal Plains of the World

4

Chip's Tips on Yemen

4

Early Native Americans

4

Arc de Triomphe, France

3

Mercury

4

Chip's Tips on Laos

4

Maddy's Indiana Diary

4

Mount Rushmore

4

Maddy's South Dakota Diary

2

The Wonderful World of Water

4

Maddy's North Dakota Diary

4

Maddy's Nebraska Diary

4

Chip's Tips on Venezuela

4

Eiffel Tower, France

4

Alhambra, Spain

3

Venus

4

Belém Tower, Portugal

2

Landforms

4

Steppe

4

Maddy's Kansas Diary

4

Maddy's Wyoming Diary

4

Ngorongoro Crater, Tanzania

4

Acropolis, Greece

4

Maddy's Colorado Diary

3

Zhen Learns About Inflation

3

Puppet Power!

4

Indigenous People

4

Chip's Tips on Nigeria