Classroom Assessment Techniques (aka CATs) are activities that can help instructors monitor students' learning in their classes, get quick feedback on their teaching, and also help students to think metacognitively about their own learning. CATs can take many forms - and you may already be using them in your classes! CATs can take up a minute of your class time or the whole period, depending on which CAT you choose. They can be graded or ungraded, individual or collaborative, impromptu or planned, and focused on any aspect of the class. Join us to learn more about the diversity of CAT activities, discuss how they can be effectively implemented in your courses, and start planning how you may be able to use any one (or more) of these activities in your own courses this semester!