The Magic School Bus

When Mrs. Frizzle turns the class into animals there is no puddle but when Tim, Arnold, and Phoebe hide behind the gate, there is a puddle.

Arnold is one of the phone callers at the end of this episode.

Danny Tamberelli, who does the voice of Arnold, provided the voice of Ralphie for two lines.

Horace Scope couldn't have known about the new star being made if it was hundreds of lightyears away because the light of the new star would take hundreds of years to reach Earth.

GRANITE stands for "Great Rock Admirers National Institute of Tectonics Experts".

The class plans to escape the jar by bouncing to the top. But how exactly would that work? Early on in the show, someone came by and put the lid on the jar. Really, how would the open the lid from inside the jar, especially if it was screwed shut?

Arnold is seen at Mr. Ruhle's office during one shot, although he is seen inside the chick's egg. But in the next shot, Carlos is seen.

The class and the bus shrink to their smallest ever in order to see molecules. In past episodes, they were shrunk where they could still be seen by the naked eye.

Murph answers the phone at the end of this episode.

This episode can be found on the Holiday Special DVD.

Ashley Walker-Club-Dupree appears during the beginning of "Producer Says" segment.

Shortly after the class crashed in the mud puddle, Arnold's collar is blue.

Inspector 47 is one of the phone callers at the end of this episode.

Mr. Sinew answers the phone at the end of this episode.

Mr. Sinew's shirt rips three times when he and Ms. Frizzle shake hands.

This episode states that there are 6 colors of the rainbow, but there are 7: Red, orange, yellow, green, blue, INDIGO, and violet.

General Araneus appears during the "Producer Says" segment.

Before Ms. Frizzle drove the bus into the movie, she exclaims "Wahoo!" but close-captioning reads "Whoa-ho!"

Gerri Poveri answers the phone at the end of this episode.

When Phoebe says "There's no time to lose" her mouth doesn't move.