As the workshop summarized in this volume demonstrated, the research base about learning in early childhood is expanding and has great potential to contrib- ute to a broader set of national policy goals focused on making sure that all children enter kindergarten ready to learn. With this important research base in mind, the National Research Council’s Center for Education (CFE) convened a workshop to focus on early learning in mathematics and science. Thanks go first to the National Science Foundation (NSF); through its grant to the Center for Education, NSF makes possible such convening events that focus on the intersec- tions between research, policy, and practice. Examining the.