Assessing student learning "after" instruction sessions is essential to improving teaching. However, classroom assessment techniques are perhaps more important "during" an instruction session in not only gaging students understanding, but also in securing and cementing intended outcomes before students exit the classroom. Using clicker technology, instructors can develop interactive classroom assessment questions and activities resulting in improved student learning and better teaching practices. The intention of this presentation is to iCATs using clicker technology with the focus both on the technology of clickers and interactive classroom assessment techniques. Participants will gain two essential outcomes: First, they will gain a better understanding of classroom assessment techniques to measure the "real-time" learning of students in a classroom session. Second, they will gain a better understand of how to implement clicker technology to interactively assess student learning and improve their personal teaching practice.