Alan Schoenfeld is the Elizabeth and Edward Conner Professor of Education and Affiliated Professor of Mathematics at the University of California at Berkeley. A mathematician by training who studies issues of mathematical thinking, teaching, and learning, he has served as President of the American Educational Research Association and been awarded the Felix Klein Award for life-time achievement in mathematics education research by the International Commission on Mathematical Instruction. His research has focused on mathematical problem solving, models of the teaching process, and understanding aspects of learning environments, from the student perspective. His current research focus is the Teaching for Robust Understanding (TRU) Framework, which concerns the creation and support of learning environments from which students emerge being knowledgeable and flexible thinkers and problem solvers.