Paddy MacMahon

#MathsToday #ALevelMaths #FurtherMaths Find the exact value of the green area.

🔹🔷🟦 #FridayQuiz 🟦🔷🔹 🔹 Like, share and repost 🔹 Have a go and good luck! 🔹 Share your score below with a gif 🔹 Share the quiz with whoever you want! Happy #Friday! docs.google.com/forms/d/e/1F...

Looks great - good luck!

Problem of the Week 195! Please do not comment the solution so others can work it out too. Instead, like this post or comment a thumbs up if you think you have the correct answer! The solution will be posted in the comments on Thursday afternoon. #Problem #UKMT #Maths

New to the STEP Support Programme website are the interview preparation pages. Find them in the menu at step.maths.org Any comments or suggestions very welcome! #MathsToday #AlevelMaths #UKMathsChat

#ALevelMaths #MathsToday Find the exact value of the green area.

🔹🔷🟦 #FridayQuiz 🟦🔷🔹 🔹 Like, share and repost 🔹 Have a go and good luck! 🔹 Share your score below with a gif 🔹 Share the quiz with whoever you want! Happy #Friday! docs.google.com/forms/d/e/1F...

I've got some availability coming up and Im looking to fill it! If something here makes it feel like I might meet a need you have, get in touch! #Freelancing #History #Maths #Writing #Education #Learning #Heritage #Work

#MathsToday

#MathsToday #ALevelMaths Find the exact value of the green area. Was pleasantly surprised that the answer here turned out nicely!

Nearly 7,000 competitors signed up for www.cipherchallenge.org and everything is set for the practice run starting in ten minutes. It is not too late to sign up - free to UK schools and colleges - and the competition proper runs throughout the Autumn term, starting on Nov 5th!

🔹🔷🟦 #FridayQuiz 🟦🔷🔹 🔹 Like, share and repost 🔹 Have a go and good luck! 🔹 Share your score below with a gif 🔹 Share the quiz with whoever you want! Happy #Friday! docs.google.com/forms/d/e/1F...

Niche offer but anyone mathsy in Leeds I have a ticket to this at lunchtime today if anyone wants it. Free to a good home. Please repost.

#ALevelMaths Looking at iterative solutions to equations today, so I wrote this root finder in @desmos.com, utilising the Newton-Raphson method. r(a, n) uses n iterations starting at x=a to identify a root. #MathsToday www.desmos.com/calculator/4...

There's still time to sign-up for our Maths of Data Science and AI course for #ALevelMaths teachers that starts on 14 October - 4 online sessions and a study day (with a £350 subsidy to attend!) We've also got a one-off 90-minute webinar on 3 December too ⬇️⬇️⬇️⬇️⬇️

This Japanese copy of The Mathematicians' Library is winging its way to a school in Grantham to play a part in rekindling an international exchange programme disrupted by the covid pandemic. I'd say that was a good cause! I've still got 1 copy each in *German* and *Spanish* to give away to...

🔹🔷🟦 #FridayQuiz 🟦🔷🔹 🔹 Like, share and repost 🔹 Have a go and good luck! 🔹 Share your score below with a gif 🔹 Share the quiz with whoever you want! Happy #Friday! docs.google.com/forms/d/e/1F...

Normal approximation to the binomial distribution in #ALevelMaths #MathsToday, and I wrote this question as an example of why we might use it in these days of fancy calculators with binomial distribution functions: If X~B(n, 0.4), find the least value of n such that P(X >= 200) > 0.1.

Today is the first day of #mathober (a month of mathematical creativity prompts, see https://mathober.com for details) and I've done a thing: it's a zine about today's prompt, the boundary of an ellipse! PDF here: https://katiesteckles.co.uk/mo1

#ALevelMaths #MathsToday Find the exact value of the green area.

#CoreMaths #MathsToday How are @netflix.com delivering more value by *increasing* their prices...? 🧐

I've got one copy of *The Mathematicians' Library* to give away in each of four languages: Polish, German, Japanese, and Spanish. I'm offering them for free (including UK postage) & I'd like them to go somewhere that'd make good use of them. If you think *your* organisation or group would...

One for the UK Maths crowd - this would be a great place to work: www.tes.com/jobs/vacancy... A level Maths/Stats/FM, large successful state college, lovely town. Fab students (such as my children :)).

Chi-squared tests in #CoreMaths #MathsToday. We used this resource yesterday: www.paddymacmahon.com/resources/a-... The presence of actual M&Ms is proving somewhat distracting...

Complex numbers practice in L6 #FurtherMaths #ALevelMaths #MathsToday.

Argand diagrams in #FurtherMaths #ALevelMaths #MathsToday, so I made a little completion table. drive.google.com/file/d/1aFK0...

Inspection! Hooray!

Discussing my favourite two facts about random variables with my U6 #FurtherMaths #ALevelMaths in #MathsToday: They're not random, and they're not variables. Has got me thinking about flying lemurs...

Approximating the Lorenz attractor with a chaotic leaky water wheel. The orange dot is the centre of mass of the water. It traces (a projection of) the familiar attractor as the wheel spins seemingly randomly left and right.

In 1992 I introduced Tom Stoppard to Bob May, who'd put chaos into biology. A year later I was reviewing Arcadia. It closes Saturday, at the theatre that now carries Stoppard's name. My story, plus my lost 1993 review rogerhighfield.substack.com/p/on-the-ori...

A group of 25 Fields Medalists, including myself, have made a joint declaration on Math and AI: mathandai.org . We welcome additional signatories. See also this article in the Economist announcing the declaration: www.economist.com/science-and-...

I think the maths historians would probably call this a 'surveyors' problem. Am in the process of making a sheet of them ... unless anyone already has such a thing. (The 40 and the 72 are the areas of the rectangles formed by the respective diagonals). #UKMathsChat #iTeachMath

teaching-vacancies.service.gov.uk/jobs/teacher... anyone fancy a nice part time job in south man with me!

Join Dr Brigitte Stenhouse (Open University) for What Does It Take to Become a Mathematician? The Case of Mary Somerville. (1780–1872) 🗓️ Wednesday 14 October 2026 🕰️ 18:30-20:00 Book your place now🔗: bit.ly/3VnuXn2

Are you teaching #ALevelMaths or #ALevelFurtherMaths this year?? We still have a few places on our fully funded longer-term CPD courses with study days around the country. If you are in Leeds I'll be there this year talking statistics! 🤩 Full details: amsp.org.uk/teachers/extended-pd-courses/

In #mathstoday core maths estimated how many cars might be in a 3km traffic jam on the M4.

I thought Byrne's 1847 treatment of Euclid's Elements was pretty cool, but today I learned that @chethamslibrary.bsky.social in Manchester have an early English translation from 1579 that has fold-out flaps, making it one of the earliest pop-up books in English? Why aren't they... #MathsToday 🏛️🎓

bsky.app/profile/mino...

TMUA prep session after school in #MathsToday. Lots of hard thinking going on at 5:00pm...

A coordinate geometry question for discussion in #ALevelMaths #FurtherMaths #MathsToday. Most plumped for using perpendicular gradients, equations of lines and simultaneous equations. One went for a trig solution. I like this method (none of the class went for it... 😕): youtu.be/Df07cDPguPc?...

This year we are launching A Level statistics. Reaching out to anyone who has delivered this already? #AlevelStats Appreciate a retweet to reach more people 🙏🏽

The AMSP 'Bringing the Maths of Data Science and AI into the A level Mathematics classroom' PD course is now open for booking for the autumn term 4 online sessions and a study day in London, Birmingham or Manchester (and there's a £350 bursary for attending!) amsp.org.uk/teachers/mat...

*New* Mathematician of the Week Posters Here's something I've been working on over the summer. A growing set of posters of mathematicians doing cool things with maths. Each comes in black/white or colour, with a quote and a link to read more. Check them out at: interwovenmaths.com/mathematicians