Focusing on the teaching and learning of science concepts at the elementary and high school levels, this volume bridges the gap between state-of-the-art research and classroom practice in science education. The contributors -- science educators, cognitive scientists, and psychologists -- draw clear connections between theory, research, and instructional application, with the ultimate goal of improving science teachers' effectiveness in the classroom. Toward this end, explicit models, illustrations, and examples drawn from actual science classes are included.