This lecture discusses the importance of obtaining feedback on teaching to enhance learning outcomes, as supported by research findings. It covers various strategies such as grouping students by ability level, increasing task time, direct instruction, and clear communication of objectives. The lecture also delves into the purposes of feedback in education, the design of questionnaires, and the process of data collection, analysis, and dissemination of results. It emphasizes the significance of self-reflection for both instructors and students, focusing on aspects like course organization, evaluation, workload, and course dynamics.