4

Hoover Dam

4

Chip's Tips on Botswana

4

Chip's Tips on Thailand

4

Early North American Settlers

4

Maddy's Nevada Diary

4

The American Revolution

3

Harbors of the World

3

Houses from around the World

3

Bays of the World

4

Chip's Tips on Nigeria

3

Construction Worker

4

Chip's Tips on Ghana

3

Rivers of the World

3

Edmund Hillary

4

Maddy's Washington, D.C. Diary

2

Baa Baa Black Sheep

4

Maddy's Massachusetts Diary

3

Anne Frank

4

The Australian Aboriginal People

4

Landmarks of the United States

3

Nyaminyami The Spirit of the River God

4

Chip's Tips on Oman

4

Chip's Tips on Brazil

4

Chip's Tips on Venezuela

4

Temples of Abu Simbel, Egypt

2

US Landmarks

3

Energy

3

Isthmuses of the World

4

Sources of Energy

4

Hurricanes