Splash!
Splash!, organized by Stanford's Educational Studies Program, is an amazing program that recruits Stanford students to teach a weekend's worth of classes to high school and middle school students on any topic imaginable. I've been involved in the program since spring quarter of my freshman year (and I regret not starting in the fall instead!).
My flagship course has been the much-enjoyed "An Introduction to Phonetics with Elvish Writing," which covers the basics of the science of speech sounds by teaching students the phonetically-based Tengwar script from The Lord of the Rings. I've also given a few tries at teaching a class on vectors and linear algebra (although I'm still working on getting that one to a comparable level of fun), and for a couple of years I co-taught a workshop in Where Are Your Keys, a game for rapid language learning that I've been addicted to since David Edwards showed it to me at an earlier Splash event.
Spring 2016
Fall 2015
Spring 2015
Fall 2014
Spring 2014
Fall 2013
Spring 2013
Fall 2012
Spring 2012
Fall 2011
Spring 2011
Fall 2010