I use these 4 closing questions (Exit Ticket 5) differently depending on how the lesson has proceeded. Typically, I distribute the questions on a half-sheet of paper. I give students 5 minutes or so to discuss the questions with their partner or group and to attempt to answer them. Then, I facilitate a brief whole-class discussion, during with I make sure that somebody (me or a student) clearly articulates the key ideas (Exit Ticket Sample Responses).
At this time, I usually project the questions and write the key ideas on the projected copy during the discussion. I then give students a few more minutes to write their best answers to the questions. I read student responses as they leave the classroom and they can either keep their answers or give them to me.