Lesson preparation is the intentional process of translating a lesson plan into a clear learning progression by anticipating student thinking, planning exemplars and errors, and scripting how students will actively engage to ensure mastery for all learners. In this session, participants will learn how intentional lesson preparation creates high participation and think ratios, strengthens student understanding and success, and frees teachers’ cognitive space so they can prioritize listening to, analyzing, and responding to student thinking rather than managing what comes next in the lesson.