When Keesha discovers mold on her sandwich, the class takes off on a tour of the mini microbe world, and they learn first hand that these little creatures can have HUGE effects. Ms. Frizzle proves that there is always more than meets ...

On another special field trip on the magic school bus, Ms. Frizzle's class learns about the ocean and the different creatures that live there.

Ms. Frizzle warps her students back to the late Triassic period, where they begin a journey forward through time in search of Maiasaura eggs. . . .Sidebar information provides the hard science, timelines, and maps of continental drift...