My last math class in college: Modern Algebra

After deciding not to major in math, I still took one last math class in the Fall of 1985: Modern Algebra. In the first session, Professor Gregory Brumfiel said that Rubik's Cube could be used to help us learn about group theory, but he had found that few students actually learned it well that way. Halfway through the term, he then mentioned that we had reached the point where the Cube would be useful, so if anyone wanted to come to his office hour, he'd show them how it represented groups. In a lost opportunity, I didn't go, and nobody from my study group did, either, as far as I remember. (Andrew Shields, #111words, 26 May 2023)