Domain 3 of the Framework for Teaching focuses on instruction and student engagement. It describes the work teachers do to bring complex content to life for students. At the heart of Domain 3 is engaging students in learning through clear communication, effective questioning techniques, engaging activities, appropriate assessment, and flexibility. The five components of Domain 3 are communicating with students, using questioning and discussion techniques, engaging students in learning, using assessment in instruction, and demonstrating flexibility and responsiveness.