3

Light

3

The Jeweled Frog and the Mighty Condor

4

Maddy's Wisconsin Diary

4

Dr. Why-Physics

4

Maddy's New York Diary

3

Neptune

2

Jack's Sack

3

Asteroids

3

The Jeweled Frog and the Mighty Condor

4

Money

3

Magnetism

3

Mars

3

Meteorites, Meteoroids, and Meteors