4

Hoover Dam

4

Chip's Tips on Nigeria

4

Chip's Tips on Thailand

3

Energy

4

Chip's Tips on Botswana

4

Chip's Tips on Venezuela

3

Isthmuses of the World

4

Maddy's Washington, D.C. Diary

4

Maddy's Massachusetts Diary

4

Early North American Settlers

4

The Australian Aboriginal People

4

Sources of Energy

3

Houses from around the World

2

Baa Baa Black Sheep

4

Landmarks of the United States

4

Chip's Tips on Brazil

4

Chip's Tips on Oman

3

Bays of the World

4

The American Revolution

3

Construction Worker

3

Nyaminyami The Spirit of the River God

3

Anne Frank

4

Temples of Abu Simbel, Egypt

4

Hurricanes

3

Harbors of the World

3

Rivers of the World

3

Edmund Hillary

4

Maddy's Nevada Diary

4

Chip's Tips on Ghana

2

US Landmarks