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!

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.

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.

Tim’s beekeeper Grandfather has the sweetest honey in town. Ms. Frizzle turns her class into bees so they can visit a hive and learn how raw honey is processed firsthand.

“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 wreaking havoc on the town. Ed Asner stars as the film’s power-mad protagonist, General Araneus.

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.

The light show at Walkerville’s old theater is illuminating, but Arnold’s bossy cousin Janet claims she could put on a much better show—if there wasn’t a ghost living in the theater!

Arnold brings in a webbed hoop for the International Show-and-Tell Competition, left behind by his great-aunt, a famous archaeologist, but he has no idea what it is! Can the kids find out what it is before he takes the stage? With Alex Trebek as the “Sportscaster.”

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!

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.

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 kids rent a rainforest cocoa tree as an Earth Day present for Ms. Frizzle. But when the harvest arrives, there’s only one shrivelled cocoa bean! Ms. Frizzle takes the class to the rainforest to meet the impeccable Inspector 47 who keeps a tidy, mud-free cocoa grove. What has he done to the rainforest's intricate ecology web?

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.

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.

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!

Ms. Frizzle’s “Uncle Shelby” 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.

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!” Ralphie thinks that air doesn’t do anything, but when the bus shrinks and gets stuck inside the jar—the class finds that their only hope for escape is... air!

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!

Flora Whiff, 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 that is bound to take first prize.

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!

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!