In addition to teaching at the university level, he has taught high school mathematics. His professional interests include the practice of student-centered mathematics instruction, the potential of history and philosophy of mathematics for informing such teaching, the role of technology in supporting student exploration, and the links between educational scholarship and practice. In his recent book, Beyond Formulas in Mathematics and Teaching: Dynamics of the High School Algebra Classroom, Dr. Chazan chronicles his experiences teaching algebra to students who resist the traditional formal approach.