Professional Development to Practice Step 6: Closure Provides a way for students to review and clarify the key points of a lesson. Allows students to “make sense” of what has just been taught. Students organize thinking and learning. Students apply and generalize key skills. Hattie, J. 2009. Visible learning: A synthesis of over 800 meta-analyses relating to achievement. Hunter, M. 1994. Enhancing learning.