Introduction

This site is a portfolio of my work in learning, doing, and teaching math—most recenty at Phillips Exeter Academy and IHÉS. I’m in the process of updating it from an academic web site, focused on research in geometric topology and university-based teaching for undergraduates and high school students, to something that also reflects my past year as a full-time high school teacher and my broader interests in programming and mathematical illustration. Please stay tuned, and keep in mind that pages on this site may move, change, or disappear.