We read about cases about the percentage of people who have type O blood, as well as the number of successful free throws a basketball player makes. Marcos conducted simulations based on the information given. His simulation involved having a pen top with a string attached, which he dropped to the floor and, depending on the way it landed, determined whether a person had type O blood or not. With the free throws, a person has a 2/3 chance of making a free throw. Marcos divided the floor of his class into thirds, and again dropped the pen. It's landing spot determined the future outcome of free throws. It was an interesting class period!