4

Stonehenge, England

4

Windsor Castle, England

4

Hadrian's Wall, England

4

Canterbury Cathedral, Canterbury, England

3

Momentum

3

Harbors of the World

3

Thanksgiving Day

3

May Day

3

Lazy Jack

4

Buckingham Palace, London

4

Maddy's Delaware Diary

3

Meteorites, Meteoroids, and Meteors

4

Maddy's Rhode Island Diary

4

The Anglo-Saxon Invasion of Britain

3

The Old Lady and Her Pig

3

The Old Lady and Her Pig

3

Pressure

4

Maddy's Vermont Diary

3

Motion

3

Daniel Boone

4

The American Revolution

3

Malala Yousafzai

3

Isaac Newton

3

Straits of the World

4

Maddy's Massachusetts Diary

3

Team Sports

3

Rivers of the World

3

Inertia

4

Early North American Settlers

3

Chinese New Year