3

John Cabot

3

John Smith

4

Yellowstone National Park

3

Vasco da Gama

4

The Space Needle

3

Astronauts

4

Maddy's Maine Diary

4

The Tower Bridge, London

4

Chip's Tips on Botswana

4

Maddy's Colorado Diary

4

Maddy's North Carolina Diary

3

Space Exploration

4

Maddy's Michigan Diary

3

Daniel Boone

4

Maddy's Washington, D.C. Diary

4

Maddy's Tennessee Diary

4

Maddy's Maryland Diary

4

Early North American Settlers

4

Things to Do in Central Park

4

The American Revolution

4

Maddy's Texas Diary

3

Famous Explorers

4

Maddy's Massachusetts Diary

4

Grand Canyon

4

Gorillas and Other Primates

4

After the American Civil War

4

Charles Bridge, Czech Republic

4

Chip's Tips on Papua New Guinea

4

Chip's Tips on Canada

4

Belém Tower, Portugal