Curated OER
Venn Diagram-Two Circles
In this Venn Diagram worksheet, students analyze the union, intersection, and subtraction of three sets of Venn Diagrams.
Wolfram Research
Wolfram Math World: Sets
This page discusses sets and set theory in mathematics and probability, and it discusses the notation and properties of sets.
University of Illinois
University of Illinois Urbana Champaign: Union of Sets
A straightforward site that teaches the meaning of set union. Very easy to understand!
Wolfram Research
Wolfram Math World: Union
This page provides a good explanation of unions of sets in mathematics. It discusses the union of disjoint sets and the probabilities of unions, incorporating probabilities of the two independent sets and their intersection. Discusses...
Purple Math
Purplemath: Set Notation
This resource explains concepts related to set notation and gives examples for each.
Khan Academy
Khan Academy: Basic Set Notation
Checks understanding of the union, complement, and intersection of sets. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
California State University
California State University, San Bernardino: Inverse Functions
This site has many links to examples of inverse functions, including intersections, inverse by reflection, and graphing inverse functions.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Operations on Sets
Find a quick, concise explanation of operations on sets. Examples are given and clearly explained.