3

Neil Armstrong

4

America in the 20th Century

2

Washing and Bathing

3

Astronauts

2

The Wonders of the Human Body

3

The Moon

4

Maddy's Louisiana Diary

3

Famous Explorers

4

Chip's Tips on United States

3

Body Systems

4

Maddy's Mississippi Diary

4

Maddy's Connecticut Diary

3

All About History

3

Space Exploration

4

Early North American Settlers