Courses:
Here are links to the web pages of the various courses I've either taught or been a TA for.
Columbia University
Fall 2011 - Math 2010
Fall 2011 - Math 1101
Summer 2011 - REU on Noncommutative Knot Invariants
Fall 2010 - Math 1102
Summer 2010 - REU on Legendrian Knots
University of Pennsylvania
Summer 2009 - Math 114
Fall 2008 - Math 116
Summer 2007 - Math 240
Spring 2007 - Algebraic Topology
Summer 2006 - PCMI Lecture Notes
Spring 2006 - Math 240
Fall 2005 - Math 114
Summer 2005 - Math 103
Spring 2005 - Math 170 (grader)