There is a previous lesson on Exploring The Relationships Between Sets, that could also be viewed as part of this unit.

https://mathpqjq.com/exploring-relationships-between-sets/

This video will lead you through guided examples of how set theory principles can be used to solve problems. After watching the instructional video, check your understanding by answering the practice questions found below.

A video lesson that also complements this lesson, can be found at Organizing Information Involving 3 Sets.