I did some discussion / brainstorming work with a couple of my groups this week.
At some points, the discussions became noisy and even heated. For once, I put on my own brakes and left them to it, only steering them back on course when I felt they had digressed too far from the point.
It was somewhat chaotic, but it was great to see everyone engaging and getting enthusiastic about the topic. Far better to have a noisy, energetic (if a little disorganised) session, than one where everyone sits silently wishing the clock to tick faster. Sometimes not saying anything gives the learners a chance to voice their own opinions.