There is nothing I enjoy more, as an English teacher, than a rousing discussion about a poem! In the past I have regularly used what I called poetry circles to encourage students to talk about poems, in a circle.
Sometimes I use a fish-bowl exercise, where some students are doing the discussing and the others have to watch and jot down questions, or summarise the discussion, or even play tag discussions, replacing “team” members when they want. I have recently started filming the discussion so that the video can be placed on the class Moodle page to form the basis for further discussion on the forum.
What I have found is that creating a video of the discussion provides powerful new tools for the flipped classroom armoury. A discussion forum can be used either before the classroom discussion or afterwards, and the video provides a chance to replay an in-class discussion and reflect on it in different ways to an in-class fish-bowl. The digital fish-bowl allows students to rewind a comment and reflect on it in ways which the face-to-face version of the exercise cannot match. I call this Flipping Forward because it takes something done inside of class and flips it on, or vice versa.
I have found 8 to be a magic number of discussants, and the key decision is whether you as the teacher are in on the discussion, or are absent from it. Some groups need more input than others, steering when they go off track, nudging when they go silent, or for drawing in of silent ones.
I find it really hard not to dominate the discussion if I am in the group, so one technique is to appoint a chair who is responsible for guiding the discussion, and to give them a cue card with some questions to ask when discussion flags. This works quite well if you choose the right chair. You also need to keep the video as short as possible because videos that are too long do not engage as well, and also take longer to download. They should not really go beyond 10 minutes! I appoint a time-keeper who will indicate to the chair when they need to do the wrap-up.