Wanda plans to see The Nutcracker ballet, but during a trip to Murph’s recycling plant, the toy soldier she needs to get into the theater accidentally becomes a plastic pellet! Ms. Frizzle activates the Bus’s Un-Recycler, taking the class and Murph on a song-filled field trip, where they learn how everyday items are made from recycled trash.

City Critters: Ms. Frizzle’s class is visiting the zoo, which is, according to Tim, the only place in the city where wild animals can survive. To test this idea—ZAP!—Ms. Frizzle turns the class into possums, foxes, and falcons!

The class is ready to plug in their “Double-Trouble Wheel of Wonder” at the town carnival, when they discover all the electrical outlets are taken.

The class' garden is going to be featured on the cover of PLANT IT! magazine. But Phoebe's garden plot is glaringly empty. With Robby Benson as Mr. Seedplot.

Arnold and Wanda are due to give a report on the town waterworks. But Ms. Frizzle thinks it's field DRIP time! She turns the bus and class into water drops and the kids evaporate, condense, become rain and rush by river into the ocean. After several trips through the water cycle, they're ready to turn back into regular kids. But the magic key that will get them out of the cycle is locked in the school bathroom! Trying to work their watery way into the bathroom, the kids go through the town waterworks and see how water is purified. Can they get to school through bathroom pipes? Or are they stuck in the water cycle forever?

Ms. Frizzle’s class opens the school for Mr. Ruhle. But there’s so much to do! “There must be a way to do these chores without actually doing them,” says Carlos. Enter Mr. Ruhle’s new computer and Mikey, Carlos’ whiz kid brother!

The class finds Ms. Frizzle inside her closet—playing a pinball machine she created with light pulses instead of steel balls. With time and the light pulses running out, the kids must discover the secrets of color—before the principal, Mr. Ruhle, discovers them!

Ms. Frizzle takes the class on a dinosaur dig, courtesy of her old school chum, paleontologist Dr. Carmina Skeledon, and travels 67 million years back in time!

Phoebe tries to grow a vine for the school play, Jack and the Beanstalk. But her plant is more like a beansprout than a beanstalk! With the opening curtain only moments away, Ms. Frizzle turns Phoebe into a bean plant so she’ll grow into the star of the show!

The class needs a new mascot for its soccer team. Phoebe suggests butterflies, but everyone thinks they’re wimpy—until The Friz flutters in!

When Wanda discovers that one of Ms. Frizzle’s ancestors was Redbeard the Pirate, she naturally wants to follow the treasure map he left. The map leads the class to a coral reef, where they learn firsthand that life there is risky.

It's Ms. Frizzle's birthday, and a field trip to the bakery seems perfect -- until the bus's shrinker-scope goes on the fritz and the class gets baked in a cake! With Dom DeLuise as the Baker.

Is Mr. Sinew any match for the Friz? At this year’s “Teacher-athlon,” the kids fear Ms. Frizzle doesn’t stand a chance against the muscle-bound gym teacher from another school, so the class travels inside her body for a closer look.

The Magic School Bus goes into show business when Keesha directs a movie about social animals for the school science fair.

Ms. Frizzle takes the class on a field trip to R.U. Humerus's Body Shop. They learn how bones, muscles and joints all work together to help us move.

It's "Accidental Science Project" day and the class has brought in marvelously rotten entries from the back of their refrigerators. With Ed Begley, Jr. as Larry Log-Away.

Should Walkerville get rid of the swamp and replace it with a great new shopping mall or build the mall somewhere else? The class learns that the swamp is an important habitat and natural water filter, but the town council’s not convinced until... FLOOD!

Ralphie is crushed when a fever keeps him home from school the day he's scheduled to host a FNN (Frizzle News Network) television broadcast on health. With Tyne Daly as Ralphie’s mom.

Arnold's know-it-all cousin Janet drives the kids crazy when she joins Ms. Frizzle's class on a field trip and gets them lost in outer space!

When Wanda’s favorite singer, Molly Cule comes to town and she chooses Ms. Frizzle’s class to wash her famous car, the kids discover how to clean the car down to the very last bit.

Two inches tall and trapped in a bathroom at Wanda’s house, the kids must use what they’ve learned about structures to escape before Wanda’s mother discovers them.

Ralphie wants to serve salmon at the annual school picnic, but he can’t find any at his favorite fishing spot. But when the kids are “Frizzled” inside a salmon-bus they have an uncontrollable urge to head upriver.

When Wanda's pet frog, Bella, jumps out an open window, Ms. Frizzle shrinks the bus into a mechanical frog and takes her now tiny class on a hop-along adventure.

To celebrate the founding of Walkerville, Ms. Frizzle’s class sculpts a stone likeness of its founding father, Captain Walker. As they add the finishing touches, the statue tumbles down the mountain. Ms. Frizzle turns the Bus into a huge boulder and the kids into rocks while bumping down the mountain in a desperate attempt to save the statue.

When the kids see Horace Scope (Dabney Coleman) on the Star Shopping Network, they decide to buy Dorothy Ann a real twinkling star for her birthday.

The principal, Mr. Ruhle, has to go away for a few days and leaves his beloved chicken, Giblets, in Dorothy Ann’s care. The Friz takes the class on a field trip to see how eggs are made - from the inside out!

There’s a monster in Walkerville Lake! Wanda competes with Gerri Poveri, a TV reporter whose ratings are sinking, to be the first one underwater.

Keesha and the class return from vacation to find her prize cucumber has turned into a pickle! Could the Mike Robe gang be to blame?

Arnold and Keesha are in trouble when they forget to bring in their assignment on "two things that go together."

To help them understand how the Earth makes islands, Ms. Frizzle presents the kids with an island that hasn’t been discovered yet!

Ms. Frizzle combines Dorothy Ann's physics and Ralphie's baseball into a "Frictionless Baseball Game."

“Where did the hot go?” wonders Arnold when his hot cocoa cools off. So, Ms. Frizzle whisks the class to the Arctic!