Deborah Loewenberg Ball is William H. Payne Collegiate Professor in education at the University of Michigan, and an Arthur F. Thurnau Professor. She currently serves as dean of the School of Education and director of TeachingWorks. She taught elementary school for over 15 years, and continues to teach mathematics to elementary students every summer. Her areas of research are mathematical knowledge for teaching, the practice of teaching, and approaches to training for and improvement of teaching. Deborah has authored or co-authored more than 150 publications and has lectured and given presentations around the world. She is a fellow of the American Academy of Arts and Sciences, the American Mathematics Society, and the American Educational Research Association, and an elected member of the National Academy of Education. Deborah serves on the National Science Board and the Mathematical Sciences Research Institute Board of Trustees, and chairs the Spencer Foundation Board of Directors. She earned her Ph.D. in curriculum and education policy from Michigan State.