[ubicomp]

We played a game in high school that I called "The Root is Right!" We'd take turns coming up with crazy numbers for each other to estimate in our heads. Then we'd draw little pictures of prizes for the person closest to the real root. We all got super good at estimating roots!

We used a lazy version of Heron’s method, which was just to memorize a bunch of general number roots, and then average our guesses based on closeness to that root. It ended up being as easy as mental math around tipping at a restaurant. It definitely came in handy for engineering classes later on!