In post-secondary school I enjoyed taking math classes. As is the case with how I learn concepts within computing science, I tend to think of "real-world" application for what I am working on. Most the time it simply acts as a heuristic to remember the concept. Here’s one I came up with recently. The equation and result (L) is purely personal. Here’s a link to limit mathematics as described by Wikipedia.
p.s. I apologize for not being able to properly embed the image in this post.