1 - Space

Skeleton boards a rocket for a journey to the moon and the outer planets.

2 - Musical Instruments

Ms. Principal coaxes everyone to form a band for an upcoming competition.

3 - Snow

The classroom window id not closed, allowing a snow drift to clutter everything. It doesn't stop Professor Iris and the class from their lesson on snow.

4 - Fish

Ms. Principal brings a goldfish to the classroom. Iris and the class try to cheer it up.

5 - Dancing

Professor Iris is in a dancing mood, and so is Ms. Principal. Only Skeleton seems to go against the flow.

6 - Cats

7 - Wind

8 - Presussion Instruments

9 - I Feel Sick

10 - Olympic Games

11 - Castles

Ms. Principal appears to be trapped in a castle turret, and it's up to Professor Iris and his class to try and rescue her.

12 - Water

13 - When I Grow Up

14 - Cold Places

15 - Rivers

16 - Shoes

17 - Friendship

18 - Dinosaurs

19 - I'm Scared

20 - Games

21 - Dreams

22 - I Can Count

23 - Hot Places

The school's heating system has broken down, forcing everyone to bundle up. On top of that, Ms. Principal has a cold. Professor Iris whisks here to his magic chalkboard to experience the desert.

24 - Turtles

Skeleton can't fathom that a turtle could beat a hare in a race. Professor Iris whisks the entire class into the turtle's environment, where a turtle races Skeleton dressed as a hare.

25 - Garbage

Skeleton's ""little snack"" grew to four times what he really ate and about eight times the amount of garbage he thought he'd produce. With the classroom a mess, Professor Iris puts Skeleton on the job as a garbage collector.

26 - Boats

Ms. Principal has found what appears to be a treasure map. Thus Skeleton and Plant board a boat, where Professor Iris holds his lesson.