I love having a scientific conversation in my room. However, I want to hold everyone accountable and contribute to the discussion. As I was researching ways to hold students accountable I came across an awesome Kagan Strategy called Talking chips.
So basically you give students discussion chips and each time they talk they place their chip in the middle. If they run out then they have to wait until everyone has run out of chips. This works great for small groups and with the correct set up the entire class.
I usually set a specific topic of discussion. Then, I use poker chips as discussion chips, but any math manipulative would work. How do you regulate discussion in your classroom?