Plenary:

• "Good Markets (Really Do) Make Good Neighbors"
  • Invited Talk, First Workshop on Mechanism Design for Social Good (MD4SG'17), June 26, 2017. (Slides.)
• "Theory, Practice, and Engineering in (Generalized) Matching Market Design"
  • Lunch seminar, Center for Research on Computation and Society, November 20, 2013. (Video.)

Invited Address:

• "Measuring PRISE's Success"
• Harvard College PRISE Anniversary Celebration, June 19, 2015. (Transcript.)
• "Crisp Printing and Small Type"
• ScienceMONTGOMERY Award Ceremony, March 20, 2011. (Transcript.)

Surveys, and Similar (see also):

• "Generalized Matching Market Design"
• Fields Institute "Conference on Optimization, Transportation and Equilibrium in Economics," September 15, 2014. (Video.)
• "Recent Advances in Generalized Matching Theory"
  (joint with John William Hatfield)
• Becker Friedman Institute for Research in Economics and Stevanovich Center for Financial Mathematics "Matching Problems: Economics meets Mathematics" conference, June 4, 2012. (Slides.)

Educational:

• "Theory, Practice, and Engineering in Market Design"
  • Distinguished lecture, Harvard College Program for Research in Science and Engineering (PRISE), July 22, 2014.
  • Distinguished lecture, Harvard College Program for Research in Science and Engineering (PRISE), July 11, 2013.
  • Distinguished lecture, Harvard College Program for Research in Science and Engineering (PRISE), July 5, 2012.
  • Becker Friedman Institute Summer Research Experience for Undergraduates, June 29, 2012.
• "How much do you bid?"
• Splash 2009 (run by MIT's Educational Studies Program), November 21, 2009.
• Guest lecture, The Math Circle, May 3, 2009.
• "Why matchmakers?"
• Tea and Math (at MIT's Random Hall), April 18, 2009.
• Spark 2009 (run by MIT's Educational Studies Program), March 7, 2009.
• Guest lecture, The Math Circle, December 7, 2008.
• "Microeconomics in 50 Minutes"
• Splash 2009 (run by MIT's Educational Studies Program), November 21, 2009.
• Spark 2009 (run by MIT's Educational Studies Program), March 7, 2009.
• "Quadratic Form Representation Theory in One Hour"
• Guest lecture, The Math Circle, October 21, 2007.

At the Harvard Math Table:

	"Lattice Theory for the Working Matchmaker," October 7, 2014: A survey of the theory and practical applications of generalized matching, focusing on fixed-point characterizations, lattice structure theorems, and cadet--branch matching.
	"Large Games IV: A New Hope," November 16, 2010: A proof of Bodoh-Creed's "Death Star" of a theorem on the approximation of large economies by continua.
	"The Rap Battle of the Millennium," May 5, 2009: Zachary Abel and I rap our way through the seven Clay Mathematics Institute Millennium Prize Problems in the first-ever "sung through" math table lecture.
	"Koch's Condition on Type II Codes of Length 24," April 14, 2009: An introduction to binary linear codes and harmonic weight enumerators, with an application to a theorem of Koch on the possible tetrad systems of Type II codes of length 24.
	"Who wants to be a Math Concentrator?," March 17, 2009: A panel of current mathematics concentrators advising prospective concentrators in mathematics and related fields.
	"Matchmaker, Matchmaker, Clear Out My House," November 11, 2008: A thirty-minute course in the theory of matching, introducing the marriage and college admissions problems, the Gale-Shapley algorithm, unraveling, and generalized matching.
	"C=15," October 30, 2007 (awarded the top Robert Fletcher Rogers Prize): A discussion of recent results in quadratic form representation theory, focusing on the Conway-Schneeberger "Fifteen Theorem," the Bhargava-Hanke "290 Theorem," and Kim, Kim, and Oh's criterion results for representations of higher-rank forms.
	"Opetopia," November 21, 2006: An introduction to the theory and applications of $n$-categories, focusing especially on the "opetopic" realization of $n$-category theory.
	"Metric-Preserving Functions," February 21, 2006: An introduction to the theory of metric-preserving functions, those functions $f:[0,\infty)\to[0,\infty)$ such that for any metric space $X$ with metric $d$, $f\circ d$ is a metric on $X$.

On The Harvard College Mathematics Review:

• "The Harvard College Mathematics Review"
• Northeastern Section of the Mathematical Association of America Fall 2007 Meeting, November 16, 2007.

Panel Presentations:

• "Economics Graduate School Panel"
• Harvard Undergraduate Economics Association, October 26, 2009.
• "Exploring Graduate School Options"
• Harvard Office of Career Services, September 22, 2009.
• "What Helps Students Learn: A Discussion with Undergraduates"
• Derek Bok Center Fall Teaching Conference, August 28, 2009.
• "Summer and International Opportunities"
• Harvard Alumni Association Meeting, February 1, 2008.
• "The Winning PRISE Experience"
• Harvard Alumni Association Meeting, February 1, 2007.

Panel Moderation:

• "Nobel Laureate Panel"
• Center for Excellence in Education 30th Anniversary Celebration, October 26, 2013.