Read the "fine print" on the back of one of your credit card statements or on your credit card agreement. If you do not have a credit card, find an offer for a credit card and present that as if it were your own.
After providing the name of the credit card, find the interest rate, method of calculating that rate, annual fee, and grace period.
Compare these features with those of your classmates to determine who has the best and worst "deal." This activity can be a real eye-opener.