I have regularly been involved in some way with the undergraduate astronomy lab at Berkeley. This includes being a teaching assistant for the infrared lab, optical lab, radio lab twice, and twice teaching the IDL DeCal (DeCal is derived from Democratic Education at Cal).
Additionally, I have been a teaching assistant for two lecture courses. The first was Alex Filippenko's Astronomy C10 in Fall 2009, an astronomy survey course for non-scientists. During Fall 2010, I led sections for Astronomy 160 with Eliot Quataert, which covers stellar structure and evolution, and is directed at upper division astronomy majors. Section material for each is linked below. My worksheets made use of a great deal of work by past graduate students, most notably Daniel Perley and Louis-Benoit Desroches.