[Pix]

I like using games, so maybe you could give them a short example of what you'll be doing, and then turn it into a game. Give them a short speech and then have them get into teams. Give each team a sheet of questions about what you talked to them about and have them answer them and then add in a competition factor such as the team that gets the most right gets a bonus.

Another idea would be to give the short lecture/speech and then give each team member a slip of paper with a sentence or phrase on it and they will need to determine, as a group, which ones were key points and which ones weren't key points. You can increase the difficulty as you go along.