First physical prototype! The support structure attachments need some sanding but I’m really pleased. The ball is made from 68 semicircles assembled into a single simple closed curve.

Every ed tech fad intentionally ignores the fact that we are human and living in community with other humans is messy. The messiness is part of the essence and beauty and should be protected and supported in schools, not optimized out as if we were machines.

This is a first attempt at categorising @catrionaagg.bsky.social 's puzzles by the techniques used to solve them. My hope is that this makes it easier to use them in class. notes.mathforge.org/notes/publis... #mathsky #UKMathsChat #ITeachMath

New momentum transfer video just dropped 😊 #iTeachPhysics #Science 🧪

I've added a new section to the site today - A-level Revision. Over the next few months I hope to add to the revision resources, starting with four A-level grids - algebraic methods, quadratics, exponentials and logs, and circle geometry. www.draustinmaths.com/revision #ALevelMaths #MathsToday

The Mr Barton Maths website has just had a massive update. Please share this post. @mathsjem.bsky.social @susanwhitehouse.bsky.social

My cartoon for this week’s @newscientist.com

A task I liked from this week: instead of directly teaching the inclusion-exclusion formula, we treated finding probabilities as a puzzle to be solved with a Venn diagram. Then I showed them the formula and let them choose which they preferred to use. #mathstoday

I always reflect on how it wasn't till sophomore mechanics that I learned about the brachistochrone problem and now plenty of like seventh graders know about it bc of YouTube.

Rude.

COW TOOLS COW TOOLS COW TOOLS

Entertainer, childhood literacy advocate, and *scientific philanthropist* Dolly Parton was born #OTD in 1946. Mostly known for singing and songwriting, Dolly's Imagination Library program has distributed over 100 million free books to kids around the world. 🦋 📖 🎶 dollyparton.com/imagination-...

My current AI syllabus statement. I'd love to link to a short, accessible explanation of the ethics and environmental cost of AI. Where would you link? (AND, thanks to many people on here who helped me form this.)

Conic Sections xkcd.com/3189/

Happy new #ProblemSolving year! The January Calendar of #math problems is posted!! Enjoy them w/your students or yourself--please share your thinking & solutions here or on the post. #iTeachMath #MTBoS #T3Learns #RecreationalMath #MathSky #MathsToday karendcampe.wordpress.com/2026/01/01/j...

bye 2025👋

A belated Merry Christmas! 🎄🎁 Some new resources added today: ✨ Generating formulae from words match-up ✨Quadratic formula problem in context practice grid Find them both at www.draustinmaths.com/algebra #UKMathsChat #MathsToday

It’s time for some good news! 🌱 🌍 (1/3)

A Christmas cartoon from my new book of science cartoons PHYSICS FOR CATS. In good bookshops and online now: www.tomgauld.com/comic-books-v2

🎄🎁⭐For anyone, like me, who happens to be teaching negative and fractional indices in the final week of term, here's a Christmas colouring sheet I've made that you might find useful. www.draustinmaths.com/powers-and-roots #MathsToday #UKMathsChat

This is seriously cool.

New resources from recent Year 9 lessons added to the website today: ✨Pythagoras pile up puzzle ✨Multi-step trigonometry practice grid Enjoyed making and working through these! (Hopefully I got the correct answers...) #MathsToday #UKMathsChat

“It's nearly Christmas and something terrible has happened…” Time for the famous @mscroggs.co.uk www.mscroggs.co.uk advent calendar! Good fun — but am I too busy, or will I keep it going this year? Only time will tell!

I learned this folding technique yesterday, so I had to make something with it.

VERY IMPORTANT IDEA: the next academic conference I attend should have a "tea exchange" where we all just bring a bunch of our favorite tea, try each others, and then everyone leaves with some new tea that they liked. This is unironically a 10/10 networking idea and I'm not too humble to admit it.

❤️ Love this ❤️ @mathforge.org has done what I’ve never been organised enough to do myself, and catalogued every #geometrypuzzle I’ve ever posted on social media. It looks amazing!

This week's comic: Binary Sudoku foxtrot.com/2025/11/16/b...

This also works as "Sweater weather is the worsted time of the year..."

Sweater weather is the worst time of year to be angoraphobic

THREAD. A collection of photographs of excellent sheep I have met on walks. You will find the captions to each photo in the alt text.

THREAD. A collection of photographs of excellent cattle I have met on walks. You will find the captions to each photo in the alt text.

Just because the calendar says that you’re supposed to spend like crazy doesn’t mean you have to! (Black Friday, after-Christmas sales, random “deals” that aren’t really deals) We need to save 💵 y’all!

Geometry just needs to be two units: * Yep, it adds to 180! * Ok, but what if we cut it in half like THIS?

Picard management tip: The truth is that sometimes you just won't know the right thing to do. You still have to try.

I think the term "college and career readiness" is an incredibly well-intentioned shift in education that has left many, many high school students disengaged + disconnected from their learning. They deserve to learn things that have value + enrich their lives in the present—not just the future.

If you're looking for a Halloween activity to do with your kids or students, you can make a "Flex-a-ghoul"—this is a Halloween-themed hexaflexagon that I made. There's a printable PDF on my blog: divisbyzero.com/2022/11/01/h...

A fresh batch of Jason Fox Lucky D20s has hit The FoxTrot Store! Grab yours now at store.foxtrot.com before the holiday rush begins!!

Iteration mathshko.com/2025/10/10/i...

I love all the resources from @draustinmaths, they are always well thought out. If you need more of these, you can create this type of activity with randomly generated questions on many topics on my site. Choose 'Codebreaker' as Activity Type. generator.interactive-maths.com/maths-questi...

What would your graph for "How Old I Feel" vs "How Old I am" look like?

Made this Circle Theorems and Trigonometry worksheet inspired by interwoven maths @nathanday.bsky.social in #Mathstoday PPT and answers here: chelekmaths.com/most-recent-...

Thank you for the feedback! I posted an updated link with m_ode=2 and I changed some of the descriptions to hopefully make it more understandable bsky.app/profile/rows...

So so so cool. Thank you for posting!

This past week was really challenging at times in the classroom—but at the same time, I kept reminding myself to not give into that challenge with my own actions. Something that helped? Having some "uplift moves" in the tool belt as a teacher. Here are four of my favorites:

A lot of people think that every international student admitted means one fewer spot for domestic students, when the opposite is more likely true - the tuition revenue international students bring allows public universities to provide substantial discounts to domestic students, improving access.

The New York Times Learning Network is going to be publishing four lessons over the next four weeks on Tuesdays, based on my Math, Revealed series from a few months ago. Here's the first installment: www.nytimes.com/2025/09/16/l...

Oh great, more dice for me to roll a 1 with.