3

Venus

3

Inventors and Inventions

4

Chip's Tips on Switzerland

4

Grandpa's Guide Dog

4

Maddy's Washington, D.C. Diary

4

Maddy's Arkansas Diary

3

Wetlands of the World

3

Martin Luther King, Jr.

3

Rivers of the World

3

My First Kitten

4

Maddy's Georgia Diary

4

Daniel's Day at the Thanksgiving Parade

3

Thurgood Marshall

4

Maddy's Vermont Diary

4

Famous Americans: George Washington

2

Flint Goes to the Post Office

4

Early Native Americans

4

Chip's Tips on Algeria

4

Montane Forest

3

William Shakespeare

3

Fjords of the World

3

The Boy Dinosaur

4

Maddy's Hawai'i Diary

3

Mythical Creatures

4

Famous Americans: Thomas Jefferson

4

Insects

3

Energy

4

I'm a Poet...But I Didn't Know It!

4

Maddy's Maine Diary

4

Maddy's Maryland Diary