The document discusses the flipped classroom model of education. In a flipped classroom, students watch video lectures at home as homework and devote class time to exercises, projects, and discussions with peers and instructors. This contrasts the traditional model where lectures are given in class and homework is for assimilating knowledge. The flipped approach aims to have students do lower-level cognitive work like gaining knowledge outside class, and focus on higher-level work like application and analysis during class with support.