PhD, Science and Mathematics Education, University of California, Berkeley, Berkeley, United States, 1991
MA, Physics, University of California, Berkeley, Berkeley, United States, 1987
BA, Physics, Princeton University, Princeton, United States, 1982
David started at Tufts in 1992, as an assistant professor of Education. He left in 1998 to be a professor of physics and curriculum & instruction at the University of Maryland, but he couldn't stay away—he's been back since 2010. His research is on learning and teaching in STEM fields, mainly physics, and at levels from K-16 and including in his own teaching—David teaches in the Department of Physics as well as in Education. Throughout he's focused on intuitive "epistemologies," how instructors interpret and respond to student thinking, and resource-based models of knowledge and reasoning.