Paddy MacMahon @paddymacmahon.com · 19h#ALevelMaths #MathsToday Find the exact value of the green area. 1101
Paddy MacMahon @paddymacmahon.com · 29/09/2026#CoreMaths #MathsToday How are @netflix.com delivering more value by *increasing* their prices...? 🧐 030
Reposted by Paddy MacMahonTommaths (he/him) @teakayb.mathsy.space · 26/09/2026I'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... 277
Reposted by Paddy MacMahonKatie Finlayson @learnwhatyoulive.bsky.social · 23/09/2026One 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 :)).tes.comTeacher – A Level Maths, Welsh Bridge Campus - Tes JobsShrewsbury College, United Kingdom 163
Paddy MacMahon @paddymacmahon.com · 22/09/2026Chi-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... 1111
Paddy MacMahon @paddymacmahon.com · 21/09/2026Complex numbers practice in L6 #FurtherMaths #ALevelMaths #MathsToday. 292
Paddy MacMahon @paddymacmahon.com · 17/09/2026Argand diagrams in #FurtherMaths #ALevelMaths #MathsToday, so I made a little completion table. drive.google.com/file/d/1aFK0... 2215
Paddy MacMahon @paddymacmahon.com · 16/09/2026Complex numbers in #FurtherMaths #ALevelMaths #MathsToday, so we looked at this problem: Explain why the absolute values of the real and imaginary parts of the square of a Gaussian integer give the legs of a Pythagorean triple. 241
Paddy MacMahon @paddymacmahon.com · 14/09/2026Discussing 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... 182
Reposted by Paddy MacMahonMatt Henderson @matthen.com · 13/09/2026Approximating 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. 14739151
Reposted by Paddy MacMahonRoger Highfield @rogerhighfield.bsky.social · 07/09/2026In 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...rogerhighfield.substack.comOn the Origins of Tom Stoppard’s ArcadiaIn 1992, I introduced Stoppard to the professor who put chaos into biology. A year later I reviewed the play that came out of it. As Arcadia is about to leave the West End, here's what happened. 54420
Reposted by Paddy MacMahonTerence Tao @teorth.bsky.social · 11/09/2026A 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-...mathandai.orgDeclaration — Math and AIRead the declaration and add your name. 422052926
Reposted by Paddy MacMahonSegar Rogers @segarrogers.bsky.social · 11/09/2026I 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 162
Reposted by Paddy MacMahonAlex J-W @alexjw.bsky.social · 10/09/2026teaching-vacancies.service.gov.uk/jobs/teacher... anyone fancy a nice part time job in south man with me!teaching-vacancies.service.gov.ukTeacher of Mathematics - Parrs Wood High SchoolTeacher of Mathematics job from Parrs Wood High School. Apply by 14 Sep 2026. 025
Reposted by Paddy MacMahonLSE Department of Mathematics @lsemaths.bsky.social · 10/09/2026Join 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 002
Reposted by Paddy MacMahonNatalie Vernon @natalievmei.bsky.social · 10/09/2026Are 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/amsp.org.ukExtended Professional Development Programme - AMSPExtended professional development courses for AS/A level Mathematics and Further Mathematics teachers. 299
Reposted by Paddy MacMahonClaire @claireph.bsky.social · 09/09/2026In #mathstoday core maths estimated how many cars might be in a 3km traffic jam on the M4. 1101
Reposted by Paddy MacMahonTommaths (he/him) @teakayb.mathsy.space · 09/09/2026I 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 🏛️🎓 151
Paddy MacMahon @paddymacmahon.com · 08/09/2026TMUA prep session after school in #MathsToday. Lots of hard thinking going on at 5:00pm... 060
Paddy MacMahon @paddymacmahon.com · 07/09/2026A 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?... 672
Reposted by Paddy MacMahonmrmunro.bsky.social @mrmunro.bsky.social · 02/09/2026This year we are launching A Level statistics. Reaching out to anyone who has delivered this already? #AlevelStats Appreciate a retweet to reach more people 🙏🏽 257
Reposted by Paddy MacMahonTom Button @tombutton.bsky.social · 01/09/2026The 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... 056
Reposted by Paddy MacMahonNathan Day @nathanday.bsky.social · 31/08/2026*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 57629
Reposted by Paddy MacMahonPenny W @pennywpennyw.bsky.social · 28/08/2026🔹🔷🟦 #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... 131915
Reposted by Paddy MacMahonDesmos Studio @desmos.com · 24/08/2026To register for this and other upcoming webinars, head to community.desmos.com/c/events #iteachmath #mathskycommunity.desmos.comDesmos Studio CommunityLogin to Desmos Studio Community community via email or SSO today. 021
Reposted by Paddy MacMahonLondon Mathematical Society @londmathsoc.bsky.social · 22/08/2026We're delighted to be once again co-hosting the Black Heroes of Mathematics Conference, taking place at @icms-edinburgh.bsky.social (and online) on 7 and 8 October. This conference celebrates the remarkable achievements and lasting impact of Black mathematicians. ➡️ www.lms.ac.uk/events/black... 043
Reposted by Paddy MacMahonBruce Lawson @brucel.bsky.social · 21/08/2026Mastermind specialist subject: Transport for London moquettes (the patterned upholstery seen on London transport). And she's wearing a moquette-themed pullover. Hero! 0184
Reposted by Paddy MacMahonDesmos Studio @desmos.com · 21/08/2026Aaaaand...action! You can now add buttons to your Desmos notebooks. #mathsky #iteachmath #desmos 1288
Reposted by Paddy MacMahonPenny W @pennywpennyw.bsky.social · 21/08/2026🔹🔷🟦 #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... 131810
Paddy MacMahon @paddymacmahon.com · 20/08/2026Doing further maths definitely seems to improve your single maths outcome. #MathsToday #ALevelMaths 170
Reposted by Paddy MacMahonrev. howard arson @theophite.bsky.social · 19/08/2026the mechanism behind this is that if you don't do your homework you don't learn the topic 23644112
Reposted by Paddy MacMahonComplete Mathematics @lasalleed.bsky.social · 18/08/2026💻 Get started with Desmos Notebooks! Explore the new platform, see a notebook built live, and create your own in this hands-on workshop. Leave with practical experience and ideas ready for the classroom. 🎟️ completemaths.com/community #MathsConf41 042
Reposted by Paddy MacMahonSam Hartburn @samhartburn.bsky.social · 17/08/2026Don't miss our one and only gig this year! Cracking new maths songs, old favourites, a set from the wonderful Helen Arney, and the chance to explore some of the MathsWorld exhibits! Monday 21st September at MathsWorld, London. Tickets at mathsworld.com/events/Pseud... 053
Reposted by Paddy MacMahonMatt Henderson @matthen.com · 15/08/2026Game of Life on Penrose tiles 413934
Reposted by Paddy MacMahonUK Maths Trust @ukmathstrust.bsky.social · 14/08/202640 talented students, one action-packed week of maths! 🙌 A record number of young mathematicians are taking part in the UKMT's annual Olympiad training camp this week. Intensive sessions, exciting challenges and lots of problem-solving fun! 🎉 #maths #UKMT #mathscamp #olympiad 021
Paddy MacMahon @paddymacmahon.com · 13/08/2026Good luck to everyone collecting results today! #ALevelMaths 070
Reposted by Paddy MacMahonThe Maths Bazaar @themathsbazaar.bsky.social · 09/08/2026Remember teachers and students get free subscriptions to the Financial Times, and that includes a free digital pass to the FT Weekend Festival on 5th September More details at professional.ft.com/free-for-sch... 132
Reposted by Paddy MacMahonbenjamin dickman @benjamindickman.bsky.social · 03/08/2026a post on "trigonomial functions" #iTeachMath ♾️ created for PROMYS for Teachers 2.0: docs.google.com/presentation... tl;dr Can you write cos(nx) as a polynomial in cos(x)? e.g., cos(2x) = -1 + cos^2(x) In our notation, this would become: T_2(x) = -1 + x^2 🚨no spoilers if you've seen it before!🚨docs.google.comPresentation: Trigonomial FunctionsTrigonomial Functions Dmitry, Benjamin, Tyler PROMYS for Teachers 2.0 2026 CE, Summer 1101
Paddy MacMahon @paddymacmahon.com · 27/07/2026Without saying your age what is your favorite movie from the year you turned 18. 110
Reposted by Paddy MacMahonPenny W @pennywpennyw.bsky.social · 24/07/2026🔹🔷🟦 #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... 171411
Reposted by Paddy MacMahonplus.maths.org @plusmaths.bsky.social · 23/07/2026And the fourth Fields Medal goes to Hong Wang plus.maths.org/icm-2026-fm-2 @londmathsoc.bsky.social #maths #mathematicsplus.maths.orgThe Fields Medals 2026: Hong WangWhat do sound waves, snow flakes and spinning needles have in common? The answer is the mathematics of Hong Wang, who has just won a Fields Medal at the 2026 ICM. 044
Reposted by Paddy MacMahonUK Maths Trust @ukmathstrust.bsky.social · 22/07/2026Alex Chui, a student representing the United Kingdom at the International Mathematical Olympiad, has become the most decorated Maths Olympiad participant of all time. Read more: ukmt.org.uk/british-pupi... 1143
Paddy MacMahon @paddymacmahon.com · 22/07/2026Book number 31 of the year (I'm on track for my half century, I think...) and this was a corker. Beautiful, tense and devastating. 010
Reposted by Paddy MacMahonThe Maths Bazaar @themathsbazaar.bsky.social · 20/07/2026Share your opinion with Pearson about changes you'd like to se in Maths education: www.pearson.com/en-gb/school...l.facebook.com 011
Reposted by Paddy MacMahonPenny W @pennywpennyw.bsky.social · 17/07/2026🔹🔷🟦 #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... 141410