If it's about teaching style, try something that gets the crowd engaged. You could start by listing five or so players at each position, and split your audience into two teams. Give a quick explanation of the rules and then let each side pick a team. Just point at someone one either side and have them make a pick. You could then talk about why one team is likely to do better, blah blah blah.
After all, what's more fun than a draft?
The best part would be if you got a chance to go back for another teaching assessment. You could show everyone how their teams are doing. Good times!