The document discusses "flipping" university lectures by assigning readings and videos for homework and using class time for active learning exercises. It provides examples from studies that found flipping improved attendance, engagement, and exam scores in physics and biology courses. Specifically, one study found non-Caucasian students benefited disproportionately from a highly structured approach using pre-class quizzes, group work, and practice tests. The document also shares student feedback on "design-a-plant" and "design-an-animal" in-class activities, finding they enhanced understanding of concepts through application. It advocates for flipping if done with careful planning, explanation of goals, and appropriate assessment.