4

Lightning

4

The Hmong People

2

Carrying Together, Ants

4

Maddy's California Diary

4

Maddy's Texas Diary

3

Saturn

4

Petronas Twin Towers, Malaysia

4

America in the 20th Century

4

Chip's Tips on Russia

3

Gulfs of the World

4

Patsy and Paul at Angkor Wat in Cambodia

4

Maddy's Connecticut Diary

4

Maddy's Tennessee Diary

4

Extreme Earth

3

Individual Sports

2

The Pair in the Air, Lovebugs

4

Tornadoes

4

Maddy's Minnesota Diary

4

Chip's Tips on Laos

4

Volcanoes

3

Inventors and Inventions

2

Evergreen Forests! Taiga

3

Rivers of the World

4

Amphibians

3

All About History

4

Extreme Weather

4

Famous Americans: Benjamin Franklin

2

Four Seasons! Deciduous Forest

2

Country Flags of Asia

3

Bays of the World