Having been recently dumped for the nineteenth time by a girl named Katherine, recent high school graduate and former child prodigy Colin sets off on a road trip with his best friend to try to find some new direction in life while also trying to create a mathematical formula to explain his relationships.

Cas Russell is good at math. Scary good. The vector calculus blazing through her head lets her smash through armed men twice her size and dodge every bullet in a gunfight, and she'll take any job for the right price. As far as Cas knows, she's the only person around with a superpower...until she discovers someone with a power even more dangerous than her own. Someone who can reach directly into people's minds and twist their brains into Moebius strips....

Peg and Cat are starting a lemonade stand on a hot day. Their first problem is figuring out a price for a cup of lemonade, and then they realize that they have a bigger problem--they forgot cups! Can Peg and Cat trade for cups so they can sell their lemonade before it rains?

Annika hopes to change her best friends' hatred of math by winning a Sudoku contest, but she does not realize how important their lack of mathematical ability is until they make a mistake at the school carnival.

Worried that he won't pass his math quiz on Monday, Frankie can't find any time to study over the weekend. Comic strip illustrations are interspersed throughout the text.

"A math-whiz from a trailer park discovers she's the only student capable of unravelling complex clues left by a serial killer who's systematically getting rid of her classmates"--

When the teacher tells her class that they can think of almost everything as a math problem, one student acquires a math anxiety which becomes a real curse.

While grieving the death of her grandmother in 1959, teenager Anna is torn between her aspirations to study math in college and her family's expectations that she will marry and become a homemaker after high school.