This resource on designing professional development for mathematics and science educators presents a professional development planning framework and provides real-life examples of how elements of the framework were used to create professional development initiatives. Discussion and reflection questions and tip boxes are included. This third edition offers updated research and expanded discussion of the role of evaluation and the continuous cycle of reflection and revision. The primary audience for the book consists of those who design and conduct professional development for practicing teachers of math and science and those learning to do so through coursework, mentoring, and collegial support groups. Secondary audiences include funders, sponsors, evaluators, policymakers, and math and science teachers in their roles as consumers of professional development. Loucks-Horsley directed the Professional Development Research Group for the National Institute of Science Education. Annotation ©2010 Book News, Inc., Portland, OR (booknews.com)