My new institution has student evaluations open until the date final exams close. My response rate also doubled AFTER I posted final grades. Absolutely ridiculous

Must resist urge to dock points....

Does the phrase "rubber sheet geometry" genuinely convey what topology is to the general public? I don't think so. So why is it in every pop math article..?

Played around with some settings in CalcPlot3D and I clicked a box that produced this eldritch horror scrunchie

When I took ODEs it was a stereotypical "techniques" class and hardly interested me. I admit I don't have a ton of experience knowing the subject proper.

What are some quick reads for the qualitative side of sophomore ODEs to help my teaching?

For which primes p is 4p-27 a perfect square?

Does anyone have an example of a parametrized curve r(t) in 3-space such that

1. r(t) is not a helix, and
2. Computing the tangent T, normal N, and binormal B is not absolute sh*t?

Keeping straight the 85 different notations for vector line integrals is worse than actually doing the integrals

It's just not widely reported...

My tenth academic paper has been accepted for publication! I'm celebrating this milestone by doing nothing in particular