4

Lightning

2

Four Seasons! Deciduous Forest

3

Inventors and Inventions

2

Country Flags of Asia

3

Chinese New Year

4

Chip's Tips on Russia

4

Extreme Weather

4

Maddy's California Diary

4

Petronas Twin Towers, Malaysia

3

Rivers of the World

4

Famous Americans: Benjamin Franklin

4

Maddy's Tennessee Diary

3

Space Exploration

4

Patsy and Paul at Angkor Wat in Cambodia

4

The Hmong People

4

Maddy's Minnesota Diary

4

Amphibians

4

Tornadoes

4

America in the 20th Century

4

Volcanoes

4

Maddy's Texas Diary

3

All About History

3

Gulfs of the World

4

Chip's Tips on Laos

4

Extreme Earth

3

Saturn

3

Individual Sports

3

Bays of the World

4

Maddy's Connecticut Diary

2

Evergreen Forests! Taiga