4

Canterbury Cathedral, Canterbury, England

4

Hadrian's Wall, England

4

Stonehenge, England

4

Windsor Castle, England

3

Power

3

Pressure

4

Chip's Tips on Jamaica

3

Malala Yousafzai

4

The Anglo-Saxon Invasion of Britain

3

Meteorites, Meteoroids, and Meteors

3

The Old Lady and Her Pig

3

Rabindranath Tagore

3

May Day

3

Isaac Newton

3

Stealing Sally

3

Work

3

The Old Lady and Her Pig

3

Gravity

4

Maddy's New York Diary

3

Chinese New Year

4

Early North American Settlers

3

Lazy Jack

4

Money

4

Maddy's Maine Diary

3

Team Sports

4

Maddy's Rhode Island Diary

3

Force

4

From the American Revolution to the Civil War

3

Straits of the World

3

Charles Darwin