4

Canterbury Cathedral, Canterbury, England

4

Hadrian's Wall, England

4

Stonehenge, England

4

Windsor Castle, England

3

Harbors of the World

3

Force

3

Daniel Boone

3

Rabindranath Tagore

3

Florence Nightingale

4

Maddy's Delaware Diary

3

Mahatma Gandhi

4

Maddy's Rhode Island Diary

3

Gravity

3

Lazy Jack

3

Lazy Jack

3

Rivers of the World

4

The Anglo-Saxon Invasion of Britain

3

Meteorites, Meteoroids, and Meteors

3

Motion

3

Charles Darwin

4

Early North American Settlers

3

Pressure

3

Malala Yousafzai

3

Christopher Columbus

3

Power

4

Money

4

Maddy's Maine Diary

3

The Old Lady and Her Pig

3

Thanksgiving Day

4

Maddy's Vermont Diary