3

Neil Armstrong

2

The Wonders of the Human Body

3

Body Systems

3

Astronauts

4

Maddy's Mississippi Diary

3

Space Exploration

4

Chip's Tips on United States

4

America in the 20th Century

3

All About History

3

Famous Explorers

4

Maddy's Louisiana Diary

4

Maddy's Connecticut Diary

3

The Moon

4

Early North American Settlers

2

Washing and Bathing