4

Maddy's Washington, D.C. Diary

4

Maddy's Washington Diary

4

Famous Americans: George Washington

4

Washington Monument

4

Yellowstone National Park

4

Maddy's Idaho Diary

4

From the American Revolution to the Civil War

4

Chip's Tips on United States

4

Mount Rushmore

3

Isthmuses of the World

4

An Introduction to the History of the United States of America

3

Christopher Columbus

2

Map of the United States of America

3

A Capitol Dream

4

The Space Needle

4

Maddy's New Hampshire Diary

4

The American Revolution

4

Maddy's Maryland Diary

4

Landmarks of the United States

4

The White House

2

US Landmarks

4

Maddy's Virginia Diary

3

Coastal Plains of the World

4

Jordan & Justine's Weekend Adventures

3

Martin Luther King, Jr.

3

Inventors and Inventions

3

Judge

4

Jordan & Justine's Weekend Adventures

3

Bays of the World

3

Caves of the World