4

Lake Malawi, Malawi

4

Maddy's Delaware Diary

3

Gulfs of the World

3

Confucius

3

Momentum

3

Force

4

The Statue of Liberty

4

Maddy's Pennsylvania Diary

2

Map of the United States of America

4

Maddy's Missouri Diary

4

Dr. Why-Physics

3

David Livingstone

4

Famous Americans: Thomas Jefferson

4

Maddy's Nebraska Diary

4

Maddy's New Jersey Diary

3

Trenches of the World

4

Maddy's Hawai'i Diary

3

Bays of the World

3

Police Officer

4

Maddy's Maine Diary

4

Victoria Falls, Zimbabwe/Zambia

4

Things to Do in Central Park

3

Nelson Mandela

3

Mountains of the World

4

Famous Americans: Abraham Lincoln

2

Country Flags of Africa

4

Chip's Tips on Jamaica

3

Lakes of the World

3

Napoleon Bonaparte

3

Pressure