From “E” to “F”: Enhancing Student Thinking and Learning During Lectures. Many instructors use the authoritative/interactive model of class instruction. A simple way for instructors to move toward a dialogic/interactive model is to move from using the IRE (inquiry-response-evaluation) pattern when asking students questions to the IRF (inquiry-response-feedback) pattern. An overview of the three main models of class instruction as well as examples of IRE and IRF will be presented.