Lesson plans should include all relevant information. The most critical are the objectives and rationale, which help provide relevance for students and ensure you are teaching what they will need to know for effective future performance. They can also help you to maintain focus and emphasize the correct content. Materials and assessment strategy can help students know what they will need and what will be expected of them in terms of assessment. Procedures are particularly helpful in case of a substitute or succeeding teacher, who can easily see what content and activities to use that day to keep the learning on track. I will ensure any lesson plans I develop include each of these sections for maximum usefulness.