ha! that reminds me of my Economy class in high school. We used to do a weekly game, where in the beginning of the year we'd have a certain amount of money, and we'd have to buy stock. The teacher would every week update us with the latest stock information, and based on that we'd have to make decisions. The person with the biggest amount of money at the end of the year won.

So I picked stock of a company which was basically bankrupt already, but was still on the stock market (why I don't know, I'm not an expert.) I think the stock was £0.02. So I waited a few weeks, and it happened to be at £0.05. I sold everything, didn't do anything for the rest of the year, and won. Didn't make the game very exciting, but at 15 years old I mainly cared for winning :)