3

Coastal Plains of the World

2

Treeless Plains! Steppe

4

The Plains Indians People

3

Amazing Earth - Part 2

4

Serengeti, Tanzania

4

Acropolis, Greece

4

Maddy's Texas Diary

4

Geometric Shapes

4

Chip's Tips on Rwanda

4

Ngorongoro Crater, Tanzania

4

Chip's Tips on Russia

3

Venus

3

Amazing Earth - Part 1

4

Maddy's South Dakota Diary

4

Maddy's North Dakota Diary

4

Chip's Tips on Kenya

4

Arc de Triomphe, France

4

Maddy's Colorado Diary

4

Brandenburg Gate, Germany

3

Lazy Jack

4

Belém Tower, Portugal

4

Chip's Tips on Canada

4

Maddy's Nebraska Diary

4

How they work? Rockets

3

Lazy Jack

4

Indigenous People

4

Alhambra, Spain

4

Maddy's Missouri Diary

3

Genghis Khan

4

Maddy's Wyoming Diary