Clickers, also known as audience response sytems are wireless hand-held devices used to conduct student participation in the classroom, often to credit attendance and measure understanding. The instructor poses questions via a slide during the lecture and students respond by entering their answer on their clicker device. The device transmits the entry to a receiver attached to the instructor's computer which gathers and compiles the data into a chart. This chart can be instantly displayed on screen, along with the correct answer choice. This provides both student and instructor with valuable real time feedback.