[sobefuddled]

First of all show why skill is important in Poker where it really doesn't have much to do with slots or roulette wheels. List the skills needed.
Next, quote heavily from Bill Chen and Jerrod Ankenmann's book "The Mathematics of Poker." Use a couple of their toy games to challenge the teacher. Be sure to footnote the book.
Finally throw in a bit about addictive behaviors in general. Include things like eating, shopping, running, knitting and hand washing.