1. 

   A drowning man and Snell's Law

   Mohsin Javed, October 2013

2. 

   Surfaces of revolution

   Georges Klein, March 2013

3. 

   Optimizing a bird's flight path

   Toby Driscoll, November 2012

4. 

   Mean Value Theorem

   Kuan Xu, October 2012

5. 

   Definite and indefinite integrals

   Nick Trefethen, October 2012

6. 

   Delta functions and derivatives

   Nick Trefethen, August 2012