Dr. Calabrese Barton is an Assistant Professor at the University of Texas at Austin. Prior to her start at the University of Texas in 1999, she was promoted to Associate Professor at Teachers College, Columbia University in Science Education. She received her Ph.D. in Curriculum, Teaching and Education Policy from Michigan State University in 1995 following work in industry as a chemist after receiving her B.S. in Chemistry from the University of Notre Dame in 1990 with honors. She has a book, *Feminist Science Education, published with Teachers College Press *(1998). Just recently, she received the 2000 Early Career Award for the National Association for Research in Science Teaching.

Dr. Zimmerman manages the Health Sciences office of CCNMTL, working with a dedicated Health Sciences- CCNMTL staff and faculty at all of the Health Sciences Schools to develop course Web sites and major projects. As Assistant Dean for Information Resources, Associate Professor of Clinical Dentistry at Columbia University School of Dental and Oral Surgery and Associate Professor of Clinical Medical Informatics in the College of Physicians and Surgeons, Dr. Zimmerman coordinates the clinical, research, and educational informatics initiatives at the dental school and is director of the Dental Informatics Fellowship program. He has published numerous dental informatics articles as well as the book *Dental Informatics: Integrating Technology into the Dental Environment* and the monograph *Dental Informatics: Strategic Issues for the Dental Profession*. Dr. Zimmerman has been active in the field of dental information for many years and is the founder of American Medical Informatics Association's Working Group 4 - Dental Informatics and a member of the International Medical Informatics Association, Working Group 11- Dental Informatics. He was the first dentist elected to American College of Medical Informatics.

Herbert P. Ginsburg is Jacob H. Schiff Foundation Professor of Psychology and Education at Teachers College, Columbia University. He holds a BA from Harvard University as well as an MS and PhD from the University of North Carolina. He is the author of selected publications, including The teacher's guide to flexible interviewing in the classroom: Learning what children know about math, Entering the child's mind: The clinical interview in psychological research and practice, Children's Arithmetic and Piaget's Theory of Intellectual Development.