Drawing on the research, literature, and wisdom of experienced professional developers, Designing Professional Development presents best practices to help professional developers, administrators, and teacher leaders design learning experiences for mathematics and science teachers that are directly linked to improving student learning. It offers composite vignettes of what the authors have learned and case illustrations of real programs or program features. A bridge between theory and practice, this book is a comprehensive tool for professional developers. Content includes key elements for planning and leading professional development: a framework for planning professional development,  a summary of key knowledge, guidance on how to assess one's context to prepare to design professional development, a lens on critical issues, a variety of strategies for professional learning, examples of how elements of the design framework were used to create real-life professional development initiatives for teachers of mathematics and science, and references and resources.