Venn Diagrams and Set Operations (Union, Intersection, Complement, etc)

We first introduce the complement of a set. We show this set in a Venn Diagram. We then introduce a second set and draw a new Venn Diagram that includes some overlap between sets. This leads us to discuss the union and intersection of sets. We then look at subtracting sets and write a law for the cardinal numbers of (or number of elements in) sets involving unions and intersections.