Ants in Arthur's Pants

Ants in Arthur's Pants is the first half of the third episode of Season 7. It first aired on October 10, 2002 with Don't Ask Muffy.

Summary
To excel in science, Mr. Ratburn's class has to prove that they have P.A.N.T.S. - the ability to be patient, attentive, nosy, thoughtful, and systematic. And Arthur's certain he's got `em to ace his ant project... until the crawly creatures end up everywhere but in their ant-farm! Can Arthur's P.A.N.T.S. save his project - and save the ants from the exterminator?