William H. Sadlier Inc.

Alfred S. Posamentier is Professor of Mathematics Education and Dean of the School of Education of the City College of the City University of New York. He is the author and co-author of more than 35 mathematics books for teachers, secondary and elementary school students, and the general readership. Dr. Posamentier is also a frequent commentator in newspapers on topics relating to education. After completing his A.B. degree in mathematics at Hunter College of the City University of New York, he took a position as a teacher of mathematics at Theodore Roosevelt High School in the Bronx (New York), where he focused his attention on improving the students' problem-solving skills and at the same time enriching their instruction far beyond what the traditional textbooks offered. He also developed the school's first mathematics teams (both at the junior and senior level). He is currently involved in working with mathematics teachers, nationally and internationally, to help them maximize their effectiveness. Immediately upon joining the faculty of the City College (after having received his masters' degree there), he began to develop inservice courses for secondary school mathematics teachers, including such special areas as recreational mathematics and problem solving in mathematics. Dr. Posamentier received his Ph.D. from Fordham University (New York) in mathematics education and has since extended his reputation in mathematics education to Europe. He has been visiting professor at several European universities in Austria, England, Germany, and Poland, most recently at the University of Vienna (Fulbright Professor in 1990) and at the Technical University of Vienna.

Judy brings the gift of her rich experience to her audiences. Teachers enjoy her math presentations because they are grounded in real-life classroom experience. Judy's innovative methods enhance the teaching of mathematics and turn classrooms into places of enjoyment for teachers and students alike. In her presentations Judy blends humor and expertise with hands-on activities to engage the audience.

Stephanie has presented mathematics in all areas of the K-8 curriculum. Her topics include reasoning, geometry, probability, and assessment in the area of mathematics, writing in the mathematics classroom, and integrating mathematics in the classroom.