Share 'Improv games to explore active learning'

I know that's a tautology - improv games are about active learning. Nonetheless, I need your help (again!). I'm working next week with 55 people from a number of different countries who generally transfer knowledge to others via a ppt presentation based on the theory that they are the experts and the audience are the empty vessels that need 'filling up' with knowledge. My brief is to introduce t…