The key to students' success in math lies in a way of teaching that provides clear evidence of how students are thinking about problems and builds on that thinking to take them to a deeper level of understanding. Seasoned math educators Ted Hull, Don Balka, and Ruth Harbin Miles offer teachers a sequential and developmental plan for integrating visual thinking into current classroom practices, and gradually, but steadily, initiating successful instructional changes in mathematics. Their new book provides teachers with numerous sample problems and classroom scenarios, showing successful teacher interventions at work, and offers guidance on how teachers can adapt traditional problems to promote visible thinking in their own classrooms.