Understanding by Design, written by Jay McTighe and Grant Wiggins, is a classic book on curriculum design that has revolutionized the way educators approach instructional planning. The book introduces the concept of backward design, which involves starting with the desired learning outcomes and then designing curriculum and assessments to achieve those goals. McTighe and Wiggins provide a framework for creating curriculum that promotes deep understanding and transfer of knowledge. This book is a must-read for educators who want to design curriculum that goes beyond surface-level learning and truly engages students in meaningful and impactful ways.