# Category Archives: Cartoons

# The Limitations of Genies (and 18 other math cartoons)

*These cartoons first appeared on Facebook and Twitter during the wild and woolly month of January 2018. If you have ever found yourself thinking, “I wish my daily social media experience featured more math puns,” then I encourage you to (A) Follow Math with Bad Drawings! and (B) Take a long, careful look in the mirror to see what you’ve become.*

**Welcome to 2018**

Some folks on Facebook offered optimistic predictions that the pattern is quadratic, with a negative leading coefficient. This is an adorable sentiment, so please don’t spoil their innocence by disagreeing with them.

Meanwhile, somebody on Twitter suggested sin(x)/x, which is a nice “end of history” prediction. My personal worry is that the world is more like x sin(x).

# Math Classes Every College Should Teach

**Math 40: Trying to Visualize a Fourth Dimension.** Syllabus includes *Flatland*, the Wikipedia page for “hypercube,” long hours of squinting, and self-inflicted head injuries.

**Math 99: An Irritating Introduction to Proof.** The term begins with five weeks of the professor responding to every question with, “But how do you *knoooooooow*?” If anyone is still enrolled at that point, we’ll have to wing it, since no one has ever lasted that long.

**Math 101: Binary.** An introductory study of the binary numeral system. Also listed as Math 5. Continue reading

# Doughnut Price is a Topological Invariant (and 13 other math cartoons)

**To Prove a Murder**

A pal on Twitter read this as “elven witnesses.” I wish. Eyewitness testimony is unreliable, but elf-witness testimony is foolproof.

**Those Who Do Not Learn Recursion…** Continue reading