Exactly, it’s just like group work. Being in groups doesn’t magically make active learning happen! You have to put some thought into what they’re supposed to be doing and why, and how to structure the groups. I have a whole rant on tape about how the original study that sent everyone down this track was of medical graduate students and it was essentially a norming session they already had advanced knowledge for, of course it generated good results! Throwing undergrads with no knowledge (yet) of the subject into groups and expecting the same is just… *dissolves into vigorous flailing and argh sounds*