Artifacts

Visual sandbox that draws what git commit, branch, merge and rebase do to the history graph.

Sketch feedback loops with nodes and arrows, then run them to see how a small system behaves over time.

Draw walls on a grid and watch Dijkstra, A* and other search algorithms find a route.

Block-based programming language and editor running in the browser.

Shows commits, branches and merges as a graph while you type git commands in a sandbox.

Series of games teaching programming with blocks, from mazes to music.

Tutorial with an in-page 6502 assembler and emulator that draws to a pixel display.

Move shapes around a grid to see how mild preferences can still produce strongly segregated neighbourhoods.

Tutorial with live demos for drawing 2D visibility and shadow effects in games.

Simple 8-bit CPU simulator in JavaScript where you write assembly and watch registers and memory change.

Large community database of example sentences with translations across many languages.

Generate a random bar array and animate several sorting algorithms on it.

Minimal typing test with selectable text and time limits.

Interactive essay on when groups of people judge well and when they herd, with small models to try.

Explainer on how fireflies and other oscillators fall into sync, with a simulation you can adjust.

Comic-style tutorial that teaches spaced repetition and lets you practise it with a flashcard deck.

Relational algebra calculator for learning by executing RelAlg queries.

Game that teaches CSS selectors by choosing the right items on a diner table.

Browser version of the Nand2Tetris tools for building chips and CPU from NAND gates.

Compare how different voting methods turn the same votes into different winners using interactive ballots.

Browser game that listens to your real guitar to practice finding notes on any string.

Bibliography generator from the Zotero team covering thousands of citation styles, with no account.

Compares one Chinese character across simplified, traditional, seal and oracle bone forms, with Shuowen entries and ancient pronunciations.

Write MicroPython for the BBC micro:bit and flash it over WebUSB.