4

The Dome of Rock, Jerusalem

4

How they work? Rockets

3

Rocks and Minerals

4

Eire of the Desert

4

Chip's Tips on United States

4

The Giant's Causeway, Ireland

3

Straits of the World

2

The Boat Crew

4

Maddy's Nevada Diary

3

Isthmuses of the World

3

Meteorites, Meteoroids, and Meteors

4

Chip's Tips on Australia

3

Venus

4

The Australian Aboriginal People

3

St. Patrick's Day

4

Maddy's Alabama Diary

4

Maddy's Idaho Diary

4

Chip's Tips on Canada

4

The Pygmy People

3

Asteroids

4

Chip's Tips on Mexico

4

Maddy's Wyoming Diary

4

Tundra

4

Jewels, Gemstones, and Birthstones

4

Maddy's Delaware Diary

4

Grand Canyon

4

Chip's Tips on South Africa

3

Astronauts

4

Patsy and Paul at Uluru in Australia

4

Maddy's Montana Diary