**Session Author: **Michelle Manes

A decade ago, while researching the expected value for lottery tickets in various states, a group of MIT students won millions of dollars in the Massachusetts $2 Cash Winfall drawing. Do you want to know how they did it? This teacher led activity starts with a lottery, explores expected value, and finally ties into finite projective geometries.

#### Resources

- MTCircular, Leader Notes and Lesson Plan
- Ellenberg, J. How Not to Be Wrong. New York: Penguin Press, 2014.

#### Categories

**Strategies:**

Try a smaller problem,**Topics:**

Combinatorics, Geometry,**Styles:**

One rich problem**Mathematical Practices:**MP1, MP4, MP7