Originally Posted by Lisnaholic

^ Yes, that's good advice from OH. Those sit-round-in-a-small-group activities are usually very welcome by all concerned, just to have a change of emphasis for a while.

Lists can also be useful; if you are presenting seven types of blah blah blah, ask the audience to work in pairs and guess what they are beforehand. Or in pairs again, you can ask them to rank things in order; reliability, importance, chronology or whatever. The main point really is to give people a chance to fidgit and let off stream by confiding to each other - either that they know it all already or that they're completely lost.

Good luck!