Ups and Downs is a Magic School Bus TV tie-in book that's based on the episode of the same name.
Plot[]
Is there a monster living in Walker Lake? That's what Ms. Frizzle's class is trying to find out. The kids try to dive down under the water, but the bus won't go! The class has to figure out how to turn their floater into a sinker so they can solve the mystery of the underwater monster. Take a dive with the Magic School Bus, and learn why things float and sink!
Differences from TV Show[]
- The part where Wanda is eating breakfast and watching Gerri Poveri story on the monster is cut.