Your first stop in finding fun STEM activities, information and career ideas.
American Mathematical Society — Information for High School Students
Find out about math competitions and contests, math clubs and events, and careers in math fields. Browse Mathematical Moments, a series of posters and podcast interviews explaining the role math plays in science, technology, nature and human culture. AMS also offers links to websites that can help students learn and practice math concepts.
Euclid's Elements
Geometry.
IXL
This site offers numbers and math skills practice for students in pre-K through 8th grade and for students taking Algebra I, II and Geometry. If you answer a question incorrectly, IXL explains how to solve the problem. You can also practice math skills according to state standards such as Virginia's Standards of Learning. Students may try up to 20 free practice questions per day (unless you buy a membership).
Khan Academy
Hundreds of math videos explaining topics such as basic math, algebra, geometry and calculus.
Math is Fun
Covers a range of math topics such as basic numbers for pre-K students to calculus for high school students and explains the concepts in an understandable way. Includes a math dictionary and games.
Measurement and Conversion
A collection of links including US weights and measures and a conversion calculator. Provided by Fact Monster.
WebMATH
Stuck on a math problem? Find the topic that describes your problem, enter your specific math question into the form, and this site will give you an answer and explain how to do it.
Universal Class for Libraries
Various mathematics courses available—free with your library card.