This document discusses effective techniques for opening (setting) and closing lessons. It provides examples of opening scenarios and asks teachers to evaluate them using red/green cards. Effective openings activate prior knowledge, connect new content to real-world examples, and review prerequisite skills. Closings should re-emphasize learning targets and check for understanding through methods like question-and-answer, exit cards, or T-charts. The document encourages teachers to develop openings and closings for upcoming lessons that engage students and reinforce the day's objectives.