The research brief, "Integrating Literacy And Science: A Powerful Partnership for Student Success," describes four key components of effective integration ofliteracy and science instruction at the elementary level. In this practitioner's guide, the authors describe sample lessons to demonstrate each of these components inaction in an elementary classroom. When schools integrate literacy and science instruction, they create rich learning environments that allow students to develop an understanding of science ideas while improving their reading, writing, and speaking skills at the same time. Neither subject takes a back seat. Literacy instruction supports science and science instruction supports literacy.