This document discusses the key principles of Understanding by Design (UbD), a framework for developing curriculum and assessments. It outlines the three stages of backward design in UbD: 1) identifying desired results, 2) determining acceptable evidence, and 3) planning learning experiences. The document provides examples of unpacking standards, determining assessments, and selecting instructional strategies to ensure students learn the content. It emphasizes designing standards-aligned plans, using assessments to measure transfer of understanding, and engaging students through meaningful learning experiences.