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 Arnold accidentally swallows his miniaturized class, his digestive system becomes the class field trip!
Why does Ralphie have a fever? Time for a field trip inside Ralphie's body to find out. But white blood cells start to attack the bus. Yikes!
Arnold and Keesha forget to bring in their assignment on "two things that go together." Just the moment for a field trip to the ocean!
The class learns about habitats when Ms. Frizzle transforms the bus into a frog to help look for Wanda's missing pet frog.
It's "Accidental Science Project" day, and the class has brought in marvelously rotten entries from the back of their refrigerators.
Always the caring soul, Phoebe goes on a crusade to save the animals and plants of the desert -- and discovers how well they take care of themselves.
The class is thrilled about its concert at the Sound Museum -- until they discover the spooky mansion is more of a thrill than they bargained for.
It's Ms. Frizzle's birthday. A field trip to the bakery seems perfect, but the bus's shrinker-scope malfunctions and the class gets baked in a cake!
Ms. Frizzle combines Dorothy Ann's physics and Ralphie's baseball into a "Frictionless Baseball Game."
The class's garden is going to be featured on the cover of PLANT IT magazine, but Phoebe's garden plot is empty. Ms. Frizzle to the rescue!
The Magic School Bus goes into an ant hive when Keesha directs a movie about social animals for the school science fair.
The Friz transforms the bus into a weathermobile, and in a wild ride through the skies, Ralphie becomes the meteorological superhero of his dreams.
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 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.
The class needs a new mascot for its soccer team. Phoebe suggests butterflies, but everyone thinks they're wimpy -- until The Friz flutters in!
Ms. Frizzle takes the class on a dinosaur dig, courtesy of her old school chum, a paleontologist, and travels 67 million years back in time!
The class takes a wild ride with The Friz through the water cycle.
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?
The school district's Vehicle Maintenance Inspector, Junkett, is about to condemn the Magic School Bus!
Shrunk inside Tim's model airplane, the class goes on a high-flying field trip to find out how things fly.
When Ms. Frizzle invites the class's parents to see what the kids are learning about bats, Ralphie and the gang are convinced the Friz is a vampire!
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.
When Dorothy Ann warns the kids there's an asteroid headed straight for their school, Ms. Frizzle arranges a field trip into space.
Liz has gone off to a mysterious place called "Herp Haven." Thinking she's in trouble, the class rushes to Herp Haven, where they turn into reptiles.
A monster is in Walkerville Lake! Wanda wants to be the first one underwater, but a TV reporter whose ratings are sinking, wants her out of the way.
"Where did the hot go?" wonders Arnold when his hot cocoa cools off. So, Ms. Frizzle whisks the class to the Arctic!
Ms. Frizzle transports the class into a 1950s horror movie, where a 50-foot praying mantis is wrecking havoc on the town.
Two inches tall and trapped in a bathroom, the kids must use what they've learned about structures to escape before being discovered.
For this field trip, Ms. Frizzle turns her class into bees and shows them a beehive up close and personal. Can you bee-lieve it?!
Arnold's cousin wants to put on the best light show ever, but instead makes Arnold disappear! How can Ms. Frizzle shed some light on the problem?
It's the International Show-and-Tell Competition. Arnold brings in a webbed hoop, given by his great-aunt, a famous archaeologist, but what is it?
Ms. Frizzle's class learns all about color, light beams, reflection and refraction in this dazzling episode inside a light-powered pinball machine!
The Friz transforms the bus into a salmon! Now the bus has an uncontrollable urge to head upriver. Ms. Frizzle to the rescue!
At this year's "Teacher-athalon," the kids fear Ms. Frizzle doesn't stand a chance against the muscle-bound gym teacher from another school.
Ms. Frizzle's class takes a field trip to a recycling plant, where they learn how everyday items are made from recycled trash.
To unearth the amazing ways plants make their own food, the Friz and the kids shrink down and dig deep in a quest to root out the facts!
The class learns about the rain forest's intricate web of life when they rent a rain forest cocoa tree as an Earth Day present for Ms. Frizzle.
Ms. Frizzle's class sculpts a stone likeness of its founding father. As they add the finishing touches, the statue tumbles down the mountain.
The principal 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.
Ms. Frizzle's "Uncle Shelby" lives on a beachfront property that's a tidal pool. Ms. Frizzle turns the kids into mussels to explore life at the shore!
Ms. Frizzle and her class are under pressure, air pressure, that is, when they fly inside an empty jar to find out why plain old air is pushy stuff.
Should Walkerville get rid of the swamp to build a shopping mall? The class learns the swamp is an important habitat and natural water filter.
Arnold is so excited to win the Rocky Award! But he's also so orange! The Magic School Bus takes a field trip to Arnold's cells to find out why.
When Ms. Frizzle's class washes the car of a famous singer, the kids discover how to clean the car down to the very last molecule.
When the kids see Horace Scope on the Star Shopping Network, they decide to buy Dorothy Ann a real twinkling star for her birthday.
Gravity pulls on Phoebe, so she can't slam dunk. Ms. Frizzle takes the class into space and turns the Bus into a planet with adjustable gravity!
Ms. Frizzle's class is selling light bulbs. But when they stop at her house, the Friz's battery-operated doorbell doesn't work. Electricity anyone?
A Smell Expert comes to school to judge the First Annual Smell Search. Ms. Frizzle's class creates a unique smell that is bound to take first prize.
When Wanda discovers that one of Ms. Frizzle's ancestors was Redbeard the Pirate, she naturally wants to follow the treasure map he left.
Ms. Frizzle's class is visiting the zoo. To test a theory about wild animals, Ms. Frizzle turns the class into possums, foxes, and falcons!
When Ms. Frizzle shrinks the class and sends them inside the computer for a guided tour, everything goes haywire. How will they solve this problem?