4

Early North American Settlers

3

Thanksgiving Day

4

Maddy's Maryland Diary

4

Maddy's Maine Diary

4

Maddy's Nebraska Diary

4

Early Native Americans

4

Maddy's Arkansas Diary

4

The American Revolution

3

Continents of the World

4

Maddy's Connecticut Diary

3

Valleys of the World

3

Archipelagos of the World

3

Coral Reefs of the World

4

Maddy's South Carolina Diary

4

Maddy's Michigan Diary

3

Christopher Columbus

4

Maddy's Hawai'i Diary

4

Maddy's West Virginia Diary

4

Amphibians

4

Chip's Tips on Mexico

4

From the American Revolution to the Civil War

3

Canyons of the World

4

Maddy's Minnesota Diary

4

Maddy's Utah Diary

4

Maddy's Idaho Diary

4

Chip's Tips on United States

4

Chip's Tips on Canada

4

Maddy's Vermont Diary

4

Maddy's New York Diary

4

Maddy's Louisiana Diary