Mathcamp: Math Resources

Resources for Students who love Math

Here are some resources that we recommend. Want even more? See this list!

AoPS Courses (low cost): excellent online math courses for high-school students, with homework and feedback from instructors.
Stanford Online Courses (requires per-class tuition): university courses for pre-college students, self-paced and with instructor support.
Coursera (free to audit, low-cost with financial aid available for enrollment): large open online courses, scheduled for 5-14 week sessions.
The Online Courses Directory (free): a collection of online college courses from major universities (such as MIT), study at your own pace.
MIT OpenCourseWare (free): materials (videos, lecture notes) from MIT courses.
Khan Academy (free): interactive courses on various subjects, including K-12 and intro college math.

Learning Unlimited Programs: day- and weekend-long festivals of learning, much in the style of Mathcamp classes.
Math Circles: weekly or monthly gatherings exploring cool topics in math. Find a circle near you or start your own!
PRIMES: Research in STEM for high school students.

The Art of Problem Solving (AoPS): a problem solving website with classes and active message boards. Lots of Mathcamp students (and even staff!) post and read regularly on the AoPS message boards.
USA Mathematical Talent Search (USAMTS): a nationwide mail-in math competition open to all US high school students.
The Centre for Education in Mathematics and Computing (CEMC): a math outreach organization at the University of Waterloo, offering competitions and math circles.
Problem of the Week: weekly problems of different difficulty from The Math Forum.

Wolfram Alpha: a computational knowledge engine, free and very powerful.
GeoGebra: digital tool for graphing and geometry.
Non-Euclidean Geometry: interactive software for creating constructions in Hyperbolic Geometry.
JRMF Puzzles and Games: interactive games, puzzles and animations illustrating various mathematical concepts.
Explorable Explanations: interactive, simple tutorials on broad subjects.
Cut-the-Knot: interactive riddles and puzzles.
Euclid's Elements: full text of Euclid's Elements with interactive diagrams.

Real Not Complex: curated, free textbooks.
The Napkin Project: giant textbook, which aims to make higher math accessible to high school students.
3Blue1Brown: beautiful animations alongside approachable, detailed explanations.

(Watch research unfold!)

Math Overflow: for mathematicians to ask and answer research-level math questions
PolyMath: a blog and wiki for "massively collaborative mathematical research projects",
The Open Problem Garden: a collection of unsolved problems in mathematics.