Everybody agrees that mold is just disgusting, until the class goes on a field trip inside a rotting log. They discover that all the dead-looking stuff is actua

Ms. Frizzle's class decides to make a movie about ants for the school science fair. They follow an ant all the way into an anthill, and discover that it's crawl

The magic school bus shrinks down for a closer look at a "dead" log teeming with life.

A special field trip on the magic school bus gives a look at major parts of the body and how they work.