[randcraw]

Yeah, the best classes I've attended began with you reading material (textbook or papers) before lecture, then revisiting that content during lecture. Ideally the prof devises a lecture agenda where discussion revolves around subtleties in the material, both clarifying Q&A and implications and exceptions and to the material. Appreciating the context and relevance of your research-based material adds a lot to appreciating how it changed the status quo.