Iris, The Happy Professor Season 3, Episode 22: I Can Count

Space

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

Musical Instruments

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

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.

Fish

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

Dancing

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

Cats

Wind

Presussion Instruments

I Feel Sick

Olympic Games

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.

Water

When I Grow Up

Cold Places

Rivers

Shoes

Friendship

Dinosaurs

I'm Scared

Games

Dreams

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.

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.

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.

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.