Topic: Kitchen Chemistry. It's Ms. Frizzle's birthday, and a field trip to the bakery seems perfect -- until the bus' shrinkerscope goes on the fritz and the class gets baked in a cake. With Dom DeLuise as the Baker.
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.
Topic: Germs. 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.
Topic: Digestion. Arnold's so excited he doesn't have to go on a field trip! But when he accidentally swallows his miniaturized class, he becomes the field trip.
Topic: Sound. 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.
Topic: Dinosaurs. 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.
Is Mr. Sinew (Dan Marino) any match for the Friz? 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, so the class travels inside her body for a closer look.