I had a professor who used a similar concept of fostering active discussion and debate within the classroom, except he did it for every lecture. He would presen

I had a professor who used a similar concept of fostering active discussion and debate within the classroom, except he did it for every lecture. He would present a concept, then ask us a series of questions about it. Students would first think on the question and vote on their own, then the question was opened to discussion and debate. After the topic had been hashed out we would re-vote. Often times the difference between the first and second votes were significant, sometimes resolving a split opinion and other times the majority would change their minds. It was a lot of fun, and easily the best and most informative experience of my educational career.