The document discusses flipped classrooms, where traditional lectures and homework are reversed. Students watch video lectures at home and class time is used for projects, exercises, and discussions. While some evidence shows higher achievement, more research is needed on effectiveness, especially for underserved students. The document also outlines pros and cons of flipped classrooms, such as the preparation required from teachers but also allowing more class time for demonstrations. It provides perspectives from teachers who have implemented flipped classrooms.