Set Theory
Learn about sets, subsets, unions, intersections, and Venn diagrams
Start with the basics and progress through 2 lessons. Each lesson builds on the previous one.
0 of 2 lessons done
Test Your Knowledge
10 questions, new mix each time (from 35)
In This Topic (2 lessons)
Introduction to Sets
Learn what sets are, how to define them, and why they are fundamental to mathematics.
Set Notation
Learn how to write and read sets using mathematical notation, including roster form and set-builder notation.
Sets are collections of distinct objects called elements. Set theory forms the foundation of modern mathematics, providing a language for describing collections and relationships.
What You'll Learn
- Define sets using roster and set-builder notation
- Identify elements and subsets
- Understand empty sets and universal sets
- Perform basic set operations
- Use Venn diagrams to visualize relationships
Frequently Asked Questions
What is the difference between element and subset?
An element is a single item in a set. A subset is a set whose elements are all in another set.
What is the empty set?
The empty set contains no elements. It is a subset of every set.
What is a universal set?
The universal set contains all elements under consideration in a given context.