algebra

MathBox: Tool for Thought (Algebra & Fourier Analysis)

blockchain

Blockchain Demo - A visual demo of blockchain technology
#1 Solidity Tutorial & Ethereum Blockchain Programming Course | CryptoZombies

calculus

An Interactive Introduction to Fourier Transforms

complex-analysis

Complex Analysis

complexity-science

Complexity Explained

complex-numbers

Complex Analysis

cryptocurrency

#1 Solidity Tutorial & Ethereum Blockchain Programming Course | CryptoZombies

cryptography

the cryptopals crypto challenges

drawing

ZygoteBody for learning human anatomy

gears

Gears – Bartosz Ciechanowski

geography

The True Size Of Nations

learning

How to remember anything forever-ish

machine-learning

Neural Network Playground

mathematics

Parallel
Euclidea: Interactive geometric puzzles
Seeing Theory
An Interactive Introduction to Fourier Transforms
The Map of Mathematics by Quanta Magazine
Mathigon

music

Get started | Learning Music (Beta)
Every Noise At Once

music-theory

Phrases and Cadences
Music Theory Lessons - LightNote
Musical Chord Progression Arpeggiator - Outpan
Get started | Learning Music (Beta)

oceans

The Deep Sea

philosophy

The History of Philosophy

physics

Physics Notes
Physics Classroom

political-science

Parable of the Polygons - a playable post on the shape of society
To Build a Better Ballot

programming-languages/clojure

4Clojure

programming-languages/python

CheckiO | Python Online Playground
Python Tutor | Visualize Python Code Execution
CodeSkulptor3

programming-languages/r

Swirl: Learn R, in R.

programming-languages/rust

GitHub - rust-lang/rustlings: Small exercises to get you used to reading and writing Rust code!

programming-languages/scratch

Scratch Homepage

programming-languages/sql

The SQL Murder Mystery

quantum-computing

Quantum Computing for the Very Curious

spaced-repetition

How to remember anything forever-ish

time

HERE IS TODAY

transform-calculus

An Interactive Introduction to Fourier Transforms
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