Student response systems (clickers) enable instructors to gauge student understanding of concepts and information in a course in real time. For an instructor seeking to engage students responsively, no matter what the class size, student response systems are an amazingly powerful tool. Possible uses include:

• uncovering typical misconceptions,
• testing student ability to apply a concept to specific situations,
• surveying student opinions,
• predicting outcomes,
• establishing baseline knowledge before embarking on a new topic,
• checking comprehension of class readings before continuing, and
• inspiring student discussion.