In this Cyberchase media gallery, explore Venn diagrams and how they are used to represent data overlap and differences. Comical and real-world examples are provided using two and three circles, plus a circle-within-a-circle representation. In the accompanying classroom activity, students sort classmates according to given characteristics, such as the color or design of their clothing or footwear. They then complete a Venn diagram that demonstrates the sorting rule. This resource is part of the Math at the Core: Middle School Collection.