Something or other, whatever!

Generates a random tree by joining up points arranged around a circle

A tool to work out which browsers support a combination of features

Plays an OEIS sequence as a tune

A version of the Numbas lockdown app made for iOS

A Numbas extension providing a function to write out a number in words

A tool which runs make when a file in the current directory is changed.

A multiplayer mathematical Guess Who?

A locked-down browser for running Numbas exams in a controlled environment

A talk about Hamiltonian graphs, leading to the Herschel graph.

A binary clock entirely made in CSS

The game board for Maths Blockbuster, part of the 24 Hour Maths Game Show

A template to quickly whip up a page to calculate a formula

An animation of the shunting yard algorithm, with a little train

A generator for memes, based on the Graduate Texts in Mathematics series

A Wordle clone where you have to guess a sequence from the Online Encyclopedia of Integer Sequences

A happy image occurred to me of the Befunge instruction pointer as a tractor, driving around a field.

A game about adding and subtracting prime numbers.

Reduce a book to log(2) of its original length by alternately adding and removing 1/N of the words.

A WordPress plugin which provides a block to embed an interactive element.

Constructive real numbers, in JavaScript.

Rectangle pals are randomly added or taken away, but after each step, all the rectangles have the same area.

This is a pen-and-paper game I invented in secondary school.

An extension for Numbas which provides a code editor and the ability to evaluate code written in Python and R.

Find all the Draculas in a castle.

A puzzle game about shaking hands

A command-line tool to synchronise a local folder with one in a Canvas LMS course

A game about dividing up an island

An experiment in making a calculator out of pieces that float around.

A Docker container for running the Chirun LTI server.

A web interface to process and serve documents with Chirun.

I've made another baby, so it's time for another talk about baby maths.

An extension for Numbas which adds tools for generating and drawing random graphs.

Point your camera at something, nad this tells you what colour it is.

A thing for writing out line-by-line mathematical derivations more conveniently than just TeX allows

A collection of articles about the motivation and research behind the design of the Numbas system

A tool to convert a bank of QTI items to Numbas

My son was born last September.

A collaborative site collecting ambiguities, inconsistencies and other unpleasantness in the conventions of mathematical notation.

A game where you're shown a Unicode character and have to work out its name

A wordsearch generator, written in Elm

A starter Glitch.com project for things written in Elm.

Can you make a rule for laying out a pentagonal spiral, so it goes on forever?

A Jupyter notebook to accompany a post on The Aperiodical by Connor Krill.

For my birthday I got an EleksDraw pen plotter.

A web page to create a postcard, for my pen plotter to draw.

A tool to make 'Which One Doesn't Belong?'

A page made to show how to embed a Numbas exam and extract the attempt data from it.

This is a web-based controller for my pen plotter, an EleksDraw.

Some bits to help record talks delivered in gather.town.

This Numbas extension adds functions to create links for students to download randomly-generated files.