In this math lesson, learners explore probability. Learners brainstorm activities that are possible and impossible, make a flap book, and read and discuss the book, "Cloudy With a Chance of Meatballs." Learners also investigate the probability of selecting a pink "pig" (pink cotton ball) from a bag containing varying amounts of pink and white "pigs" (cotton balls). Learners make predictions, record data, and graph the results. This activity is written as a four day lesson, but can be shortened into a one-time activity.