The Math Class is the seventeenth episode of season two.
After Brick receives a D on a math test, Frankie questions Mrs. Rinsky's (Doris Roberts) teaching abilities, which prompts her to invite Frankie and Mike to sit in on class. Meanwhile, Axl and Sue help Aunt Edie find a time capsule that she buried years earlier.
Ms. Rinsky (guest star Doris Roberts) is back! Actually, she never left. We just haven't seen her in awhile because Frankie's been banned from her class. But when Brick gets a D on a math test, Frankie feels it's time to have another chat with the world's most intimidating teacher. Maybe Ms. Rinsky won't remember her. Nah, she remembers her. Brick wasn't understanding his math and Mike was getting frustrated with it. Brick claimed he's not doing it the way Ms. rinsky does it. Mike asked how she does it and Brick claimed he didn't know. Frankie and Mike went back to talk with Ms. Risnky about the math and Ms. Rinsky told them that she was setting up an afterschool math class for parents which Frankie wasn't looking forward to.
At the math class, Frankie was kissing up all goodie-goodie which made Mike tell her "So that's the way you were in school." They kept talking and Ms. Rinsky asked if they would like to be separated. Frankie said no and Mike said yes. Mike got the answers correct and got favored by Ms. Rinsky. Frankie tried them and got them incorrect. Ms. Rinsky told Frankie if she knows so much about it why doesn't she go up to the board and show us how to do it. Frankie was very hesitant and kept making mistakes. frankie announced that she can name all the presidents in order and started listing them until she kept repeating Madison and Monroe.
Brick got all his homework assignments done. This doesn't explain why Brick got a D-minus on his next test. Frankie blames Ms. Rinsky. She feels she's a bad teacher. After a few late-night beers, Frankie assembles her thoughts in a harsh, rambling email to the school principal, who then asks to meet with Frankie and Mike. After Frankie sent the email, she decided to read it to Mike she explained that she doesn't add up and that she would make a better Nazi, maybe she was, we don't know her background.
The reason Brick got a D is because Ms. Rinsky lets them have free reading time once they finish their test. Brick only answered three questions so he could hit his book ASAP. An uncomfortable meeting in the principal's office clues in Frankie to the fact that the school actually has a file on her. That's never a good thing.
Ms. Rinsky believes the way to get Frankie to fall in line is not to ban her, but to embrace her. That's why she's going to be doing all kinds of extracurricular duties from here on out. Frankie will be in charge of the phone tree, school pets and she'll be stuck with crossing guard duty every Tuesday and Thursday. On the bright side, none of those things require any math skills!
When Axl and Sue fight about who has to visit Aunt Edie and Aunt Ginny, Mike orders them both to go. It's an agonizing visit, though Sue's curiosity is piqued when Aunt Edie mentions she buried a time capsule many years ago. She filled it with all sorts of cool stuff, but never dug it up.
Sue wants to find that time capsule, but Axl's not into the excavation scene. He changes his tune after he thinks Aunt Edie has died on the couch. She's fine. Just needs a refill of scotch. The next night, Axl and Sue drive all over Orson attempting to find the time capsule. They dig up a yard that may or may not be at the right house. Then Aunt Edie remembers she never actually buried a time capsule. It was just something she read in a Nancy Drew book.
Aunt Edie takes a hose to the furious homeowner whose yard they destroyed so Axl and Sue can make a getaway. The kids are thoroughly impressed. As it turns out, Aunt Edie has had many adventures in her life. She shares a few stories with Axl and Sue, who make for a captivated audience. Guess spending some time with the aunts isn't all bad.