Kerry C. Williams and George E. Veomett describe the principles of and requirements for the active learning of science and identify key ingredients for students and their development as young scientists. Educators will find examples, questions, and stories inviting them to construct meaning from the text. Based largely on the High/Scope preschool project as adapted for primary students, the book connects to research on cognitive and neural development and motivational theory from the work of Piaget and Vygotsky, and from the teaching experiences of the authors. Based on the perspective that the teaching of science is about three things: knowing content, knowing children, and teachers knowing themselves as teachers and learners, this handbook invites educators to think about what it means to teach science in a way that will make a lasting difference in children's lives.