Sara Sage is assistant professor of secondary education at Indiana University in South Bend. She has served as a special educator and teacher educator. Sage has conducted PBL research studies and has worked with numerous teachers at the Center for Problem-Based Learning and internationally. She has written several publications related to PBL in both K–12 and teacher education classrooms. Her interests in addition to PBL include professional development for teachers, human development and learning, and constructivist teaching and learning models. Sage can be reached at the School of Education, Indiana University-South Bend, P.O. Box 7111, South Bend, IN 46634-7111; phone: 219-237-6504; e-mail: ssage@iusb.edu.