Reed Stevens is an Associate Professor of Cognitive Studies and Curriculum & Instruction at the University of Washington. His research examines and compares cognitive activity in classrooms, workplaces, and science museums. On the basis of this comparative work, he is exploring new ways to conceptualize cognition and experimenting with new ways to organize learning environments. His specific interests include how mathematical activity contributes to various settings and how technology mediates thinking and learning. His multidisciplinary research draws on cognitive science, interactionist traditions, and the social studies of science and technology.