4

Yellowstone National Park

3

Clayton Does The Unthinkable

4

Stonehenge, England

3

David Livingstone

4

Jewels, Gemstones, and Birthstones

4

Famous Americans: George Washington

3

Clayton Does The Unthinkable

4

Maddy's Washington Diary

4

Washington Monument

3

Isaac Newton

4

Maddy's Washington, D.C. Diary

3

Martin Luther King, Jr.

1

Sports

2

Hilarious Times with Nursery Rhymes

4

Maddy's Minnesota Diary

3

All About History

2

Things That Are Gray-Easy Reader Part 1

4

Taj Mahal, India

2

Hilda Broomhead

3

Christopher Columbus

2

Country Flags of Europe

4

Maddy's Michigan Diary

4

Belém Tower, Portugal

3

Light

4

Acropolis, Greece

3

Straits of the World

3

Rocks and Minerals

4

Maddy's California Diary

4

History of the United States

1

Opposites