What is understanding and how does it differ from knowledge? How can we determine the big ideas worth understanding? Why is understanding an important teaching goal, and how do we know when students have attained it? How can we create a rigorous and engaging curriculum that focuses on understanding and leads to improved student performance in today's high-stakes, standards-based environment? Combining provocative ideas, thoughtful analysis and tested approaches, Understanding by Design answers these questions and offers teacher-designers a clear path to the creation of curriculum that ensures better learning and more stimulating experience for students and teachers alike.