In this lesson, Julie Harland introduces Venn diagrams and how to use them to represent sets. She explains how to draw a box to represent the universal set and how to shade sets and their complements. She also covers intersection and union of sets, including examples with three sets, and concludes with a problem involving the difference of sets.
Introduction to Venn Diagrams with Intersection, Complement, Difference of Sets in Set Theory.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com