I am a Postdoctoral Fellow in Technology and Education at the School of Engineering and Applied Sciences at Harvard University, where I work with physics and computer science research groups to develop innovative ways to use technology to do formative assessment in large lecture classes. In addition to my current research work, I am CEO and co-founder of Learning Catalytics, a company that grew out of our research work in educational technology at Harvard. I am also Chief Education Scientist at Spatial Thoughtware, a company that develops Algorithmic Geometry, a Java-based geometry curriculum. Before coming to Harvard, I was a software engineer at adap.tv, a video advertising startup in Silicon Valley. I received a Ph.D. from the Stanford University School of Education where I studied educational measurement and technology. I also hold an M.S. in statistics from Stanford University and a B.A. in mathematics from Cornell University.