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!
Arnold's so excited he doesn't have to go on a field trip! But when he accidentally swallows his miniaturised class, he becomes the field trip!
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 and Keesha are in trouble when they forget to bring in their assignment on "two things that go together."
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.
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.
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 upcoming concert at the Sound Museum -- until they discover the spooky mansion is more of a thrill than they bargained for. With Carol Channing as Cornelia C. Contralto.
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.
Ms. Frizzle combines Dorothy Ann's physics and Ralphie's baseball into a "Frictionless Baseball Game."
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.
The Magic School Bus goes into show business 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.
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!
When Ms. Frizzle invites the class’ parents in to see that their kids are learning about bats, Ralphie and the gang are convinced The Friz is a vampire! With Tyne Daly as Ralphie’s mom; Eartha Kitt as Keesha’s grandmother; Elliot Gould as Arnold’s dad; Dana Elcar as Phoebe’s dad; and Edward James Olmos as Carlos’s dad.
The class needs a new mascot for its soccer team. Phoebe suggests butterflies, but everyone thinks they’re wimpy—until The Friz flutters in!
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.
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. With Michael York as Herpst.
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.
When Tim delivers the last of the season's honey to his grandfather's customers, the jars get broken. Tim's solution is simple: get more honey from some bees. But Ms. Frizzle sweetens the idea by turning her class into bees and showing them a beehive up close and personal. When a bear steals the bees' hard-earned supply of honey, the bee-kids discover one last field of nectar-filled flowers. How will the bee-kids communicate this information to the bees in time for them to harvest enough honey before the flowers are killed by the impending frost? Season Three premiere episode!
""Where did the hot go?"" wonders Arnold when he finds that his hot cocoa has cooled. In response, Ms. Frizzle whisks the class to the Arctic! What's the freezing Arctic got to do with heat? While the kids try to find out, the bus's engine freezes and the bus floats away on an ice floe with Ralphie and Phoebe inside! As the bus moves away, so does the heat from everyone's body. How can Ms. Frizzle's kids insulate their body to keep the heat in? Can they rescue Ralphie and Phoebe before they all become the Ice Cube Kids?
What do you do when a 50-foot praying mantis menaces your town? Run like the wind... unless you're in Ms. Frizzle's class and she's taken you on a field trip inside a 1950s sci-fi film. The movie's main character, the power-mad General Araneus (Ed Asner) is determined to destroy the mantis, but Phoebe wants to trap it and save it! Shrinking to the size of real spiders, the kids discover how spiders construct a variety of silky snares, making them world-champion trappers. Can the kids save the mantis — and stop Araneus before it's too late?
Two inches tall, and trapped in a bathroom at Wanda's house, the kids have to get out before Wanda's mother (Rosalind Chao) discovers them. Gathering building materials such as spiky hair curlers, sticky Band-Aids, dental floss, and Q-tips, the kids use what they've learned about structures to construct a series of towers and bridges across the bathroom to an open window! They get across the toilet OK — but will they get past the alligator in the bathtub?
After the illuminating light show at Walkerville's old theatre, Arnold's bossy cousin Janet claims she could put on a much better show. Nobody believes her until Janet and Arnold mysteriously disappear. Ms. Frizzle leads her class into the darkened theatre to look for them. To shed some light on the problem, the kids become beams of light. Then, to their great shock, they see Arnold's ghostly image floating high above the empty stage! Is the theatre haunted? Is this just one of Janet's tricks? Or have they all been ""Frizzled""?
It's the International Show-and-Tell Competition and Arnold and DA are representing Ms. Frizzle's class. Arnold brings a webbed hoop, left behind by his great-aunt Arizona Joan, the famous archaeologist, but he has no idea what it is! Using clues from the hoop and Joan's journal, the kids make educated guesses about its uses. To test their hypotheses, Ms. Frizzle turns the bus into a "Supposatron," a magical device designed to evaluate guesses. Can the kids solve the puzzle before Arnold and DA take the stage? With Alex Trebek as the "Sportscaster."
There's something dazzling in Ms. Frizzle's closet: a magical, light-powered pinball machine! To win at this game, the kids have to light up all six colours of the rainbow. Now the race is on, as the class shrinks down and zooms into the pinball machine. Catch an eye-full of fun as they try to crack the secret code of what makes colour so....colourful!
Ralphie wants to catch salmon to serve at the annual school picnic, but he can't find any at his favourite fishing spot. Where could all the salmon have gone? The kids are soon "Frizzled" inside a salmon bus that has an uncontrollable urge to head upriver. "Wait!" Ralphie cries. "We'll be late for the picnic!" But the salmon bus won't stop. Using its sense of taste and smell, it swims the long journey to a shallow freshwater stream miles away. Why has the bus, which thinks it's a salmon ,gone to all this trouble?
At this year's Teacherathalon, Ms. Frizzle squares off with Mr. Sinew (Dan Marino), a muscle-bound gym teacher. Sinew easily wins the first of the three events. Thinking there's a problem, the kids go inside Ms. Frizzle to check her out. The bus takes them through her lungs to the bloodstream, where they get pumped through her heart to her calf muscle. But when Frizzle's leg muscle collapses from the strain of winning the second event, the kids discover that her red blood cells can't get oxygen to her muscles fast enough! Can the kids help Frizzle recover in time to win the final race?
When Phoebe tries to grow a big vine for her school's production of Jack and the Beanstalk, all she ends up with is a stunted little sprout. To help out, Ms. Frizzle turns her into a real vine. But to grow tall, Phoebe needs to figure out how plants eat - fast! 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 kids rent a rain-forest cocoa tree as an Earth Day present for Ms. Frizzle. But when the harvest arrives, there's only one shriveled cocoa bean and a note from Inspector 47 (Matt Frewer) reporting that, for reasons unknown, the tree isn't producing beans! DA and Tim become detectives as Ms. Frizzle takes the class to the rain forest to meet the impeccable inspector, who keeps a tidy, mud-free cocoa grove. What has Inspector 47 done to the rain forest's intricate web of life that is keeping the tree from making pods?
To celebrate the founding of Walkerville, Ms. Frizzle's class sculpts a stone likeness of its founding father, Captain Walker. But as they add the finishing touches, the statue tumbles down the mountain. Ms. Frizzle turns the bus into a giant boulder and the kids into rock kids. They bump down the mountain in a desperate attempt to save the statue. By the time they reach the celebration at the base of the mountain, they've been pushed, tossed, sanded, polished, and eroded by water, as has the statue now the size of a soccer ball. The kids are sure they've let everyone down until they look back at the mountain for the surprise of their lives! With Jessica Walter as "Ashley Walker-Club-Dupree."
It's the last day of school before the winter holidays and Wanda plans to see the Nutcracker ballet. But during a trip to a recycling plant that belongs to Murph (Dolly Parton), the toy soldier she needs to get into the theatre accidentally gets recycled! Devastated, Wanda wishes for a world without recycling. Ms. Frizzle activates the bus's un-recycler, taking the class and Murph on a song-filled field trip. The importance of recycling hits home when the bus's magic unrecycles everything in Walkerville — including the bus itself, as it too was made from recycled objects! Will the kids find a way to reconstruct the bus in time for Wanda to get back to see the Nutcracker? (Dolly Parton sings an original song plus four special carols written by Peter Lurye, composer of the rollicking MAGIC SCHOOL BUS theme song.)
When Wanda's favourite singer, Molly Cule (Wynonna Judd), comes to town, she chooses Ms. Frizzle's class to wash her famous car. The kids clean it from top to bottom, but when Molly insists they missed a spot, they shrink down to see the molecules that make up the car. Only then can they discover how to clean it down to the very last bit. But time is running out — they'll need a molecular miracle to get the car clean before Molly's concert begins!
When the principal, Mr. Ruhle (Paul Winfield), has to go away for a few days, he leaves his beloved chicken, Giblets, in Dorothy Ann's care. Unfortunately, the minute Mr. Ruhle is out the door, Giblets flies away. How will DA ever find another prized Rhode Island Red to replace Giblets? Where do you get chickens anyway? And which comes first, the chicken or the egg? The next thing DA knows, Ms. Frizzle and the class are on a field trip to see how eggs are made — from the inside out! But will this egg have everything it needs to become ""Giblets the Second""?
The class is enjoying a normal summer day at the beach until Ms. Frizzle discovers a letter from ""Uncle Shelby,"" who wants the class to look after his beachfront property. The kids soon discover that this ""luxurious"" accommodation is only a tiny spot on the shoreline. Why would anyone want to live in a spot where they're battered by waves at high tide and baked by the sun at low tide? To find out, Ms. Frizzle turns the kids into... mussels!?
""We got assigned air, and it's not fair!"" The only contribution the kids in Ms. Frizzle's class have made to the Walkerville Space Capsule is an empty jar. ""It's not empty,"" argues Keesha. ""It's filled with air!"" ""But air doesn't do anything!"" wails Ralphie. They discover that's not so when the bus shrinks and gets stuck inside the jar — and the class finds that their only hope for escape is... air!
The debate is intense: Should Walkerville get rid of the swamp by the river and replace it with a fantastic new shopping mall or build the mall somewhere else? Carlos, representing his class, is given the thankless task of persuading the town council to keep the smelly old swamp. If he loses the debate, he'll lose to Arnold's pesky cousin Janet! The kids learn that the swamp is an important habitat and natural water filter, but the council's not convinced until... FLOOD!!
It's the night of the rock lovers' annual Granite Awards, and Arnold is about to become the first kid ever to win the coveted Rocky Award. He's so excited, all he's been able to eat for weeks are ""Seaweedies"" — and lots of them! When he arrives for the big event, he's totally nervous and totally...orange! Once the class determines that the orange isn't on Arnold's skin, they shrink down to explore what's underneath. They discover that his whole body is made of living cells — and they're all orange! But where is the orange coming from... and how can they make it go away?
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. Before buying it, the kids blast off in the Bus to inspect the merchandise. They visit a young star and then a middle-age star and decide that it's the third and last star they want to buy. But when they give Horace their money, KABLOOM, the star explodes! Have they lost DA's star forever?
Guess who's selected to give an exhibition of a slam-dunk during half time of the big basketball game? Phoebe! The problem is Phoebe can't jump high enough. ""If only gravity didn't pull on me!"" she moans. Never one to be tied down, Ms. Frizzle sends the class into space and turns the Bus into a planet — with adjustable gravity! Basketball's a snap with low gravity and a riot with no gravity at all, but when there's way too much gravity, things get really heavy! With Paul Winfield as school principal, Mr. Ruhle.
Flora Whiff (Bebe Neuwirth), the famous expert on smell — whose ""nose knows"" — comes to school to judge the First Annual Smell Search. Ms. Frizzle's class creates a unique smell which is bound to take first prize, but Arnold's cousin, Janet, determined to win by herself, changes their smell to an odour only a skunk could love. The kids discover the secret to what makes things smell... now they have to make sure their creation doesn't make a big stink!
It's Valentine's Day and the class is selling lightbulbs. When they stop at Ms. Frizzle's house to sell her one, they find that her battery-operated doorbell doesn't work. While looking for Ms. Frizzle to tell her the doorbell's broken, Wanda overhears her teacher talking on the telephone. ""Ms. Frizzle has a boyfriend,"" says Wanda, ""and he's on his way over to see her! We've got to fix the doorbell or she'll never know he's here!"" But first they have to figure out how the doorbell works...
Ms. Frizzle's class arrives early to open the school for Mr. Ruhle (Paul Winfield). But there's so much to do! ""There must be a way to do all of these chores without actually doing them,"" says Carlos. The school handyman, Mr. McClean (Malcolm McDowell) is in total agreement. Enter Mr. Ruhle's new computer and Mikey, Carlos' whiz kid brother, who programs it to do all the chores! But when Ms. Frizzle shrinks Mikey and the class and sends them inside the computer for a guided tour, everything goes haywire. The only person who can fix the problem is Mikey - and he's just landed somewhere between the CPU and the hard drive!
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 Bus, with Liz inside, becomes a bear and wanders off, looking for food. Will the kid-animals be able to find the Bus-bear before the zookeeper finds it? And is Tim right? Can animals (like themselves) survive in the city?
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 first hand that life there is risky. To survive, they find, many plants and animals form surprising partnerships. But Wanda's not interested in partnerships — she just wants to find that treasure! When Ms. Frizzle turns the class into different sea creatures, Wanda as ""Wanda-Anemone,"" ""Wanda-Shrimp,"" and ""Wanda-Remora,"" begins to understand that partnerships are more valuable then she thought.
