Texas A&M University
Sets and Set Notation [Pdf]
Learn from this PDF file filled with definitions, examples, and venn diagrams all relating to sets and set notation.
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...
CK-12 Foundation
Ck 12: Probability: Operations With Sets
[Free Registration/Login may be required to access all resource tools.] This Concept teaches students how to find unions and intersections, as well as to calculate the probabilities of of these sets.
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.
University of Vienna (Austria)
University of Vienna: Definition of Sets
Assess understanding of sets by matching each set notation with its corresponding set.
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Intersection and Union of Sets
Get independent practice working with the intersection and union of sets. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
That Quiz
That Quiz: Conjuntos
Test your knowledge of sets, union, intersection, complements and Venn diagram by taking this practice test. Five levels are provided and it also tracks the number of correct and wrong answers.
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.
Purple Math
Purplemath: Venn Diagrams
Introduces the basic terminology of Venn diagrams, and shows how to "populate" and read Venn diagrams.