#math
READ Complexity Explorables
Interactive explorations of complex systems. Emergence, chaos, networks - play with the math.
READ Khan Academy
Free education for anyone, anywhere. Math, science, computing, and more with personalized learning.
READ Brilliant
Interactive courses in math, science, and CS. Learn by solving problems, not watching videos.
READ 3Blue1Brown
Grant Sanderson's math animations. Beautiful visualizations that build genuine understanding.
READ Better Explained
Math and programming concepts explained intuitively. Focus on understanding over memorization.
READ Intuitive Explanations
Radon Rosborough's blog on math and tech. Documented Replit's legal threats against open source projects.
READ Art of Problem Solving
Math training for bright students. From contest math to university preparation.
READ Cut The Knot
Interactive mathematics miscellany. Hundreds of puzzles, proofs, and explorations.
READ Project Euler
Challenging mathematical/programming problems. 800+ problems requiring code and math.
READ Quanta Magazine
Science and math journalism. Accessible coverage of cutting-edge research.
READ tixy.land
Creative code golfing. Write a function to control a 16x16 grid of dots. Minimalist creative coding playground.
READ Acme Klein Bottles
Cliff Stoll's Klein bottle business. Hand-blown mathematical glass objects and astronomer wisdom.
READ Falstad
Math and physics applets. Interactive simulations for learning.
READ arXiv
Preprint server for physics, math, and CS. Where new research appears first.
READ Wolfram Alpha
Computational knowledge engine. Ask it math, science, or data questions and get computed answers.
READ MathWorld
Comprehensive mathematics encyclopedia. Definitions, theorems, and explanations for every math concept.
READ Desmos
Beautiful, powerful graphing calculator in the browser. Free and used in schools worldwide.
READ OEIS
Online Encyclopedia of Integer Sequences. Look up any sequence of numbers and find its mathematical meaning.