Dr. Kaplan is Professor Emeritus of Mathematics Education at Seton Hall University, where he continues to teach graduate students after 28 years of full-time teaching on that campus. Previously, he taught at Teachers College, Columbia University, and the University of Tel Aviv in Israel. He has conducted research and written extensively on various aspects of teaching and learning mathematics, applying his research to address the practical needs of the mathematics curriculum and classroom.Among his many interests in mathematics education, one stands out-- the interplay of problem solving with new and changing curricula and standards.