Roger Nelsen received his BA in mathematics from DePauw University in 1964 and his PhD in mathematics from Duke University in 1969. He taught mathematics and statistics at Lewis and Clark College for forty years before his retirement in 2009. Nelsen has had a long affiliation with the AP Calculus program. He has participated in the annual summer AP readings for over twenty-five years, most of these in AP Calculus, with a stint in AP Statistics. For much of that time, he served as a Table Leader, and more recently as a member of a question team, responsible for working out the details of scorin...