education

A hub for learning through interactive, play-based exploration. Curated collection of explorable explanations and tools for creating them. Founded by Bret Victor's pioneering work.

Free education for anyone, anywhere. Math, science, computing, and more with personalized learning.

Interactive courses in math, science, and CS. Learn by solving problems, not watching videos.

Grant Sanderson's math animations. Beautiful visualizations that build genuine understanding.

Math and programming concepts explained intuitively. Focus on understanding over memorization.

Visualize algorithms and data structures. Step through sorting, trees, graphs, and more.

Path to a free self-taught CS education. 200K+ stars. Complete curriculum using free online courses.

Free online planetarium. View the night sky from anywhere on Earth at any time. Beautiful and educational.

Math training for bright students. From contest math to university preparation.

Financial education and market data. Learn investing concepts and track markets.

Cybersecurity education platform. CTF-style learning from ASU.

Free electrical engineering education. Textbooks, worksheets, calculators, and community forums.

Physics tutorials and interactives. Clear explanations of physics concepts.

Interactive science simulations. Physics, chemistry, biology, and math.

Encyclopedic physics reference. Concept maps connecting physics topics.

Chemistry tutorials for students. Clear explanations of chemistry concepts.

Free cultural and educational media. Courses, books, films, and more.

Comprehensive mathematics encyclopedia. Definitions, theorems, and explanations for every math concept.

Beautiful, powerful graphing calculator in the browser. Free and used in schools worldwide.

Interactive explorable explanations of complex topics. Game theory, anxiety, social networks visualized.