This book focuses on the professional development of teachers and discusses issues related to science education reform. The content of the book is divided into two parts. Part 1, Professional Development: Implications for Science Leadership, chapters include: (1) "The Role of the Science Leader in Implementing Standards-Based Science Programs" (Harold Pratt); (2) "Moving Teachers from Mechanical to Mastery: The Next Level of Science Implementation" (JoAnne Vasquez and Michael B. Cowan); (3) "Learning and Teaching Critical Thinking Skills in the Information Age: A Challenge in Professional Development for Science Teachers" (J. Preston Prather and Maurice Houston Field); (4) "Bringing about School Change: Professional Development for Teacher Leaders" (Josephine D. Wallace, Catherine R. Nesbit, and Carol R. Newman); (5) "Building Capacity for Systemic Reform in Mathematics and Science Education: A Focus on a Develop-the-Developer Model" (Karen J. Charles and Francena D. Cummings); and (6) "The Precollege Program: A Collaborative Model of Student Enrichment and Professional Development in Mathematics and Science" (Patricia S. Moyer and Eric D. Packenham). Part 2, Professional Development and the Diverse Learner, chapters include: (1) "LEARN North Carolina: A Teacher-Directed Model of Technology Integration" (David J. Walbert); (2) "Teaching Science to Diverse Learners: A Professional Development Perspective" (Paul Rowland, Donna Montgomery, Greg Prater, and Sam Minner); (3) "Leadership in a Multicultural World: Transforming Today's Science Classrooms" (Deborah J. Tippins and Sharon E. Nichols); (4) "Knowing Others and Other Ways of Knowing: Cultural Issues in the Teaching of Science" (M. Elaine Davis); (5) "Reform and Museums: Enhancing Science Education in Formal and Informal Settings" (Judith K. Sweeney and Susan E. Lynds); (6) "Access to Technology: The Equity Dilemma for Science Educators" (Rebecca P. Butler); and (7) "Principles and Practices in Multicultural Science Education: Implications for Professional Development" (Gerry M. Madrazo, Jr., and Jack Rhoton). (YDS)