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.
Wolfram Research
Wolfram Math World: Intersection
This page gives a brief discussion of the intersection of sets in mathematics and probability.
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.
University of Georgia
University of Georgia: Inter Math: Intersection of Sets
This site gives a description of intersection of sets along with an example. There are links to related terms, challenging problems, more information, and the interactive check point involving set intersections located in the left-hand...
OpenStax
Open Stax: Catherine Schmidt Jones: Keys and Scales Are Sets
Help your students identify sets and intersections of sets with this musical activity. Using the concept of key signatures, students will learn that scales are sets of notes. Included with this lesson plan are downloadable worksheets and...
Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Sets
Get independent practice working with sets. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
Purple Math
Purplemath: Set Notation
This resource explains concepts related to set notation and gives examples for each.
University of Vienna (Austria)
University of Vienna: Set of Solutions
Interactive assessment in which the solution set of an equation is found. Combines equation solving skills with set notation, introduces empty sets, intersections, subsets of real numbers (rational, integer, prime, etc.).
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.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Intersection of Sets
This site responds to an inquiry about what the intersection of sets is. Dr. Math gives an example using cars with certain attributes and then the intersection 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.
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.
Wolfram Research
Wolfram Math World: Disjoint Sets
This math site explains disjoint sets via example and definition. This site has links to related topics.
Illustrative Mathematics
Illustrative Mathematics: A Rei Solution Sets
For this task, students are shown the graphs of two equations, with areas bounded by their lines and intersections shaded in different colors. They are asked to write a system of equations or inequalities for each shaded area and explain...
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.
Ministry of Education and Employment of Spain
Red Escolar: Intersecciones
In Spanish. This math game is for two players. The goal is to join the green points on the side of the square with a straight line and get the highest number of intersections between the drawn lines.
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.
CK-12 Foundation
Ck 12: Elem Math: Determining Whether an Angle Is Formed
[Free Registration/Login may be required to access all resource tools.] For this learning module, students examine line drawings to determine if angles are formed by intersections. Includes video demonstrating a sample problem [0:32] and...
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...
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.
National Council of Teachers of Mathematics
The Math Forum: Elementary Geometry Circles
The Math Forum offers an archive of question and answer sessions on circles and how they relate to geometry.
Illustrative Mathematics
Illustrative Mathematics: G Mg, G Gmd Global Positioning System Ii
Satellites communicate with a GPS device and establish the distance between them and their locations. The set of points at a fixed distance from a satellite form a sphere so when the GPS receives its distance from a given satellite, this...
PBS
Pbs: Graphing a System of Equations
Solve a number riddle by finding the point of intersection for two lines. This video focuses on finding the solution for a system of equations, they are represented as an algebraic expression and a set of linear equations that are...