I've been going through a lot of Khan Academy mathematics courses lately. Oh, oh, how I wish I could have used graph paper for my math scratch paper in school.

I've been going through a lot of Khan Academy mathematics courses lately. Oh, oh, how I wish I could have used graph paper for my math scratch paper in school. Writing out my work neatly is pretty much imperative for working through to the correct answer. I have a tendency to mis-transcribe from one step to another, and keeping everything neat helps with that. Graph paper lets me line everything up not just horizontally but vertically, step by step, making it super obvious when I've accidentally, say, flipped a sign or missed a coefficient. All my math teachers in school insisted on wide rule, though...