The document discusses the structure of an effective English language lesson, known as the "ARC": 1) Lessons should have a clear beginning, middle, and end, similar to a story. The beginning activates prior knowledge and sets the scene, the middle is the main body of the lesson where new content is presented, and the end wraps things up and reflects on learning. 2) Effective beginnings include warm-up activities to switch to English and set the context. The middle, or "body", presents and models new activities with transitions between. It takes up most of the lesson time. 3) Lessons should end by assigning homework, reviewing key points, and having students reflect on their own learning through