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An annual collection of language-independent programming puzzles

A supplemental maths programme built around visual puzzles and animated feedback.

Cryptography learning through interactive puzzles and challenges

Maths puzzles, logic games, spatial challenges and problem-solving activities.

Maths explanations, puzzles, games, a dictionary and worksheets.

Online maths activities, puzzles, investigations and visual teaching aids.

School-topic videos, quizzes, diagrams, puzzles and other learning activities.

Animal, science, history and space content alongside quizzes, puzzles and videos for children.

Mathematical problems that reward programming solutions

Workout tracking connected with gym programming, member history and management tools

An R programming introduction for non-programmers

A Scratch-derived block-programming editor with a compiled runtime and JavaScript extension support.

A Java teaching IDE where learners program actors and see their code run inside interactive worlds.

A programming book with language lessons and projects

Beginner programming books available to read online

A sustained introduction to Haskell concepts

A programming problem archive with difficulty guidance

A Clojure learning book with further programming resources

Programming contests with a permanent practice entry point

Build native programs with Rust and manage their packages and builds through Cargo.

A beginner-focused Python IDE that makes variables and program execution visible while you learn.

Compare source files by syntax structure rather than relying only on line-oriented diffs.

A modal, configurable text editor for programming and general text work.

A functional language and Mix toolchain for maintainable applications on the Erlang ecosystem.