3

Neil Armstrong

4

America in the 20th Century

4

Maddy's Connecticut Diary

3

The Moon

3

Astronauts

3

All About History

3

Body Systems

3

Famous Explorers

4

Early North American Settlers

3

Space Exploration

2

The Wonders of the Human Body

2

Washing and Bathing

4

Maddy's Mississippi Diary

4

Chip's Tips on United States

4

Maddy's Louisiana Diary