I've made a clock which runs through every permutation of a deck of cards, swapping one pair every second.
It's not very useful.

mathstodon.xyz now has a live preview and completion of LaTeX!
This has been on my to-do list for a long time. You no longer need to worry if LaTeX will display properly or not.

Poor LaTeX in a closed-access journal 

This is pretty dire, from a closed-access journal: these matrices are typeset using \array{cc} environments, but they just used a horizontal space instead of a column separator, so nothing is aligned.
Value added!

I'm sure this must already be a thing, but I can't come up with the right google words to find it, so I've made my own:
A tool to take a subtitles file and a video and make a page showing the transcript alongside the video itself.

At the moment it just copes with Vimeo, because that's where the two videos I want it for are hosted.
Here's one of them: numbas.org.uk/talks/numbas-tra

I have a load of EAMS talks on YouTube, so I'll support that next

I've seen some combinatorial underestimates on packaging before, but this one looks particularly low.

That's nowhere near an accurate transcription of this video but now I've got the opening lyrics for my new album

My 'mathematicians for change' and 'mathematicians for inclusion' stickers have finally arrived!

If you feel like you need to make a visual statement of (1) your beliefs and (2) your mega-nerdity, Kate Poirier's brilliant "Math for equality" badges and shirts are just the thing: zazzle.co.uk/store/mathforequa
They're expensive but that's because the proceeds go to beammath.org/

You, a coward: Python doesn't have a switch statement

Me, a modern-day Galileo:

I've made an absolutely huge memory game (absolutely-huge-memory.glitch.).
It wasn't straightforward to implement; here's a little explanation of how it works

Back on my animations nonsense.
The toddler came to look:

"You doing maths, daddy?"
"I like that maths!
"How is that maths?"

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