This program covers the important topic of the addition rules of probability in Probability and Statistics. We begin by discussing what the addition rules of probability really mean and why they are important. Next, we solve several problems that involve the essential ideas of addition in probability to give students practice with the material. The entire lesson is taught by working example problems beginning with the easier ones and gradually progressing to the harder problems. Emphasis is placed on giving students confidence in their skills by gradual repetition so that the skills learned in this section are committed to long-term memory.