- Notes on Mathematics of Voting Methods, based on Donald Saari's excellent book (Winter 2004, and Spring 2007)
- What Makes Fermat's Theorem So Hard, Anyway? (Fall 2005)
- No Cell Phone Signal? Algebraic Topoogy to the Rescue! (Hudson River Undergraduate Mathematics Conference, Spring 2009)
- Fractals, Pascal's Triangle, and the p-adic Numbers (Spring 2009)
- Airplane Passenger Seating Problem (2009)