Ms. Frizzle takes her class back through time to the Triassic period on a dinosaur dig in search of Maiasaura eggs.

Ms. Frizzle takes her class on a field trip to a beehive in her magic school bus.

Ms. Frizzle takes her kids on a whirlwind tour, from the Arctic to the equator so they can see telltale signs of climate change.

On a special field trip in the magic school bus, Ms. Frizzle's class learns about the planets in the solar system.

When Arnold wishes he had more information for his family tree, Ms. Frizzle revs up the Magic School Bus and the class zooms back to prehistoric times. First stop: 3.5 billion years ago! There aren't any people around to ask for directions. Luckily Ms. Frizzle has a plan, and the class is right there to watch simple cells become sponges and then fish and dinosaurs, then mammals and early primates and, eventually, modern humans. It's the longest class...