This article from UC Berkeley's' Center for Teaching & Learning, reviews how to create opportunities for your students to build deeper understanding of concepts through articulation and elaboration, as they engage in learning conversations (discourse & sensemaking) in a large lecture hall. These strategies shift some of the intellectual work to the students, as they offer explanations, summaries, elaborations, articulations of the material, and find ways to connect to what they already know with what they are learning in your course (Allen & Tanner, 2005). The title of the article is "Discourse & Sensemaking Strategies in Large Lecture."
Allen, D., & Tanner, K. (2005). Infusing active learning into the large-enrollment biology class: Seven strategies, from the simple to complex. Cell Biology Education (CBE), 4, 262-268. doi:10.1187/cbe.05-08-0113