In this unique book, the authors focus on big ideas―like patterns, transformation, movement, balance, and relationships―as a way to think about content, and they integrate science and mathematics through these big ideas, rather than linking them topically. The book looks at why it is important to think about thinking, introduces assessment early to help the teacher plan for assessment before teaching even begins, and sets up an environment that will support the construction of the big ideas that integrate math and science. Real-life scenarios provide invaluable insights into the teacher’s thinking and planning, and each chapter includes two modules to be used for in-depth exploration of different aspects of the big ideas.