4

Lightning

3

Gulfs of the World

3

Rivers of the World

4

Patsy and Paul at Angkor Wat in Cambodia

4

The Hmong People

4

Amphibians

2

Four Seasons! Deciduous Forest

2

Evergreen Forests! Taiga

4

Petronas Twin Towers, Malaysia

3

All About History

4

Maddy's California Diary

4

Tornadoes

4

Maddy's Connecticut Diary

4

Extreme Weather

3

Saturn

4

America in the 20th Century

4

Chip's Tips on Laos

4

Maddy's Tennessee Diary

3

Space Exploration

4

Maddy's Texas Diary

4

Maddy's Minnesota Diary

4

Chip's Tips on Russia

3

Individual Sports

2

Country Flags of Asia

4

Famous Americans: Benjamin Franklin

4

Volcanoes

4

Extreme Earth

3

Inventors and Inventions

3

Bays of the World

3

Chinese New Year