| September 23 | Professor Brian Conrad | Constructing a regular 17-gon |
| September 30 | Professor John Stillwell (USF) | From perspective drawing to the eighth dimension |
| October 7 | Professor Marty Weissman (UC Santa Cruz) | A well-rounded discussion of spheres |
| October 14 | Professor Andrew Snowden | A few cellular automata |
| October 21 | Professor Samuel Lisi | Three centuries of the 3-body problem |
| October 28 | Simon Rubinstein-Salzedo | Integer Partitions |
| November 4 | Professor Thomas Banchoff (Brown) | The Two-Piece Property |
| November 11 | Rebecca Bellovin | Public-key cryptography, blind signatures, and digital cash |
| November 18 | Professor Melanie Wood | Ramsey Theory: Amongst enough chaos, can we find order? |
| December 2 | Professor Jacob Lurie (Harvard) | Combinatorial Game Theory |
| January 6 | Professor Brian Conrad | p-adic numbers: theory and applications |
| January 13 | Professor Ilya Spitkovsky (William and Mary) | Factorization for matrix-valued functions |
| January 20 | Professor Karen Vogtmann (Cornell) | Symmetries, ping-pong and outer space |
| January 27 | Professor Ravi Vakil | Murphy's Law in Geometry |
| February 3 | Sam Lichtenstein | Borromean rings and Brunnian links |
| February 10 | Professor Greg Brumfiel | Dessins d'enfants and complex rational functions |
| February 17 | Professor Gunnar Carlsson | Topology and data |
| February 24 | Maksym Radziwill | Every integer > 1 is a sum of at most a million primes |
| March 3 | Robin Koytcheff | Finite-type knot invariants |
| March 10 | Professor Joan Licata | Hyperbolic Space |
| March 31 | Professor Anthony Licata | What is an ADE classification? |
| April 7 | Professor Ralph Cohen | The art of chopping up manifolds and gluing them back together |
| April 14 | Dr. Rick Sommer | Computing remarkably large integers from infinite cardinals |
| April 21 | Amy Pang | The Art Gallery Problem |
| April 28 | Bob Hough | The Erdos-Kac Theorem |
| May 5 | Professor Soren Galatius | Simplicial Complexes |
| May 12 | Professor Akshay Venkatesh | The Circumference of an Ellipse |
| May 19 | Henry Adams | Coverage Problems in Sensor Networks |
| May 26 | Jeff Danciger | Earthquakes on Surfaces |
| June 2 | Professor Maryam Mirzakhani | Billiards in rational polygons |