In a lecture-style course, it can be challenging to assess student understanding in real-time, and the voices of frequent participants are not always representative of the class as a whole. Just because no one asks a question, it does not mean the whole group is on the same page. To get a quick snapshot students’ understand of new material, in-class polling can be useful. In this video, Dan Levy demonstrates how he uses interactive polls to check for understanding and peer discussion to clarify misunderstandings.