3

Valleys of the World

4

Maddy's Utah Diary

4

Maddy's Vermont Diary

4

Maddy's Pennsylvania Diary

4

Chip's Tips on Nigeria

4

Maddy's Nevada Diary

3

May Day

4

Chip's Tips on India

3

Amazing Earth - Part 2

4

Maddy's Indiana Diary

4

Chip's Tips on The Dominican Republic

4

Maddy's Oregon Diary

2

Landforms

4

Grand Canyon

3

Amazing Earth - Part 1

4

Chip's Tips on Mexico

3

Daniel Boone

4

Chip's Tips on United States

4

Maddy's Ohio Diary

3

Glaciers of the World

4

Maddy's New Hampshire Diary

4

Maddy's California Diary

2

Flowers

3

Trenches of the World

3

Venus

4

Chip's Tips on Zambia

3

Sinkholes of the World

4

Maddy's New York Diary

4

Lake Malawi, Malawi

4

Maddy's Maryland Diary