4

Hoover Dam

4

Hurricanes

3

Houses from around the World

4

Maddy's Washington, D.C. Diary

3

Isthmuses of the World

3

Anne Frank

4

Maddy's Nevada Diary

3

Nyaminyami The Spirit of the River God

3

Construction Worker

3

Harbors of the World

4

The Australian Aboriginal People

4

Landmarks of the United States

4

Chip's Tips on Nigeria

3

Bays of the World

3

Rivers of the World

4

Early North American Settlers

4

Sources of Energy

3

Energy

2

US Landmarks

3

Edmund Hillary

4

Chip's Tips on Brazil

2

Baa Baa Black Sheep

4

Chip's Tips on Venezuela

4

The American Revolution

4

Chip's Tips on Thailand

4

Chip's Tips on Botswana

4

Temples of Abu Simbel, Egypt

4

Maddy's Massachusetts Diary

4

Chip's Tips on Oman

4

Chip's Tips on Ghana