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.
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.
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.
![Sets and Set Notation [Pdf] Unit Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Sets and Set Notation [Pdf] Unit Plan")
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.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: El Azar Y La Probabilidad
In Spanish. Interactive activities introducing some of the concepts of probability.
University of Vienna (Austria)
University of Vienna: Definition of Sets
Assess understanding of sets by matching each set notation with its corresponding set.
Purple Math
Purplemath: Venn Diagrams
Introduces the basic terminology of Venn diagrams, and shows how to "populate" and read 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.
CK-12 Foundation
Ck 12: Algebra Ii: 5.2 Probability
In this section, students will explore different methods for determining the probability of complex events and conditional probabilities (such as unions, intersections, and complements).
Purple Math
Purplemath: Set Notation
This resource explains concepts related to set notation and gives examples for each.
State Library of North Carolina
N Cpedia: Telephones
Telephones began to appear in North Carolina beginning in 1879, three years after Alexander Graham Bell's new invention had first been introduced at the Centennial Exposition in Philadelphia. On 10 March of that year, a telephone was...
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.
Curated OER
Educational Technology Clearinghouse: Maps Etc: Nevada, 1903
A map from 1903 of Nevada showing counties and county seats, principal cities and towns, mountain ranges, and rivers. "Nevada, one of the most western of the States of the American Union, was formed from a portion of the territory...