Concetta DuvalDr. Concetta Duval earned her doctorate from the University of Rochester, majoring in mathematics and mathematics education. She is currently a consultant, specializing in creating mathematics and science materials for K - 12 students and teachers an published by a variety of textbook and computer education companies. Before working as a consultant, Dr. Duval was employed as a chemical engineer, public high school math and science teacher, school administrator, and Director of Mathematics at four private companies. She is an active member of several professional organizations. Read More Read Less