3

Zhen Learns About Inflation

3

Hank Learns About a Bank

3

All About History

3

Zhen Learns About Inflation

2

Brushing Your Teeth

3

Saturn

3

The Respiratory System

2

Keeping Your Body Clean

3

Leonardo da Vinci

3

Sacagawea

4

Timbuktu, Mali

4

The Willis Tower

4

America in the 20th Century

2

My Father

4

Money

4

Maddy's Maryland Diary

2

The Cooking Crooks from the Woods

3

Who wants an Ostrich for Easter?

3

Nathan the Whale

3

Trenches of the World

3

Nyaminyami The Spirit of the River God

4

Mount Fuji, Japan

4

The Space Needle

4

Maddy's South Carolina Diary

3

Capes and Peninsulas of the World

4

Maddy's Tennessee Diary

3

Senses

4

History of Carnival Rides

2

The Pair in the Air, Lovebugs

2

The Robot Who Looked Like a Boy