I'm restructuring the way I do labs next year to make them more efficient and effective, and part of my new structure is to have time specifically for sharing ideas with group mates and coming to a consensus. My worry though, (probably a common one) are students who don't participate in the discussion and sit back while allowing two or three very talkative ones do the entire discussion, or even worse, everyone being so shy that no one discusses. I tried taking a class called "Common Core Classroom Conversations" but I just fell out of it and couldn't find much that was useful right off the bat (just a lot of research about how conversations can be helpful to learning, which I already know). What I need are some tips for facilitating classroom conversations, some kind of classroom/grading structure for doing conversations in the classroom, expectations, etc. If you do a lot of successful discussions in your classroom (that are student-led within groups of 3-4) how do you do it? How do you manage it? etc.