iiinova — where your digital self keeps evolving

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Jenny Cains @jennycains.bsky.social · 01/10/2026

In #mathstoday, I’ve been playing around with using Numicon to represent the structure of different sequences visually for my Year 7 students.

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Jonathan Hall @studymaths.bsky.social · 17h

Need 100 higher tier GCSE questions for some reason? MathsBot can do that for you with one-click. mathsbot.com/revise?min=1...

A screenshot of 100 GCSE questions randomly generated with MathsBot.

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Nathan Day @nathanday.bsky.social · 16h

In #MathsToday, Year 13 Further Maths had a lesson in the morning to revise for an afternoon Core Pure 1 assessment. I printed off a nice double-sided A3 revision mat. There's something about that format that I find feels more approachable than 50 questions in a list! interwovenmaths.com/mats/cp1

Page 1 of a Revision Mat of 50 Core Pure 1 questions in a grid.

Page 2 of a Revision Mat of 50 Core Pure 1 questions in a grid.

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Nathan Day @nathanday.bsky.social · 16h

The first resource to get me hooked on the Revision Mat was Access Maths's brilliant '100 Questions!' GCSE Crossover page, which I've used with many a Year 10/11 class. Can be found here, near the bottom, below a load of other grade revision resources: www.accessmaths.co.uk/revision-res...

Access Maths 100 Questions GCSE Crossover Revision Maths.

https://www.accessmaths.co.uk/uploads/4/4/2/3/44232537/100_questions_revision_mat.pdf

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Desmos Studio @desmos.com · 20h

You can finally get your ducks in a row (and column). Type “matrix” in any Desmos graphing tool to get started. Learn more: help.desmos.com/hc/en-us/art... #iteachmath #mathsky #linearalgebra #matrices

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Miss Morris @morrismaths359.bsky.social · 19h

#Mathstoday Year 8 have started looking at estimation today. They have 10 seconds to give a good estimation of this on their whiteboard. Made via Mathsbot

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CantabKitty @cantabkitty.bsky.social · 02/10/2026

desmos help 🚨 can I get it to display these complex nos with the lines coming from O?

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Laura @mathsteacher09.bsky.social · 02/10/2026

Teach fast, teach twice. Discuss.

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Marco @malmeida.bsky.social · 01/10/2026

omgomgomg i'm so excited @desmos.com

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ProfSmudge @profsmudge.bsky.social · 01/10/2026

In #MathsToday I was working with a young adult with limited schooling. He struggled with mental arithmetic (he got 27 for 18+10) and explained that he would use a written method instead. This seems extreme, but with our emphasis on formal procedures, is it all that different for some UK pupils?

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Mary Bourassa @marybourassa.bsky.social · 01/10/2026

In #MathsToday (yesterday) my #MHF4U students were having trouble determining the leading coefficient of a polynomial in factored form so I gave them this series to do in random groups at the whiteboards. It was quick and worked really well.

A series of equations of polynomials from a quadratic in standard form to a degree 6 polynomial in factored form: y = 0.5(5-x)(x-1)^2(2x+8)^3 where one thing is changed at a time to make each one a little more challenging than the previous one

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Dan Lewis @4301maths.bsky.social · 01/10/2026

A quick recap of solving equations for Year 8 tomorrow. #mathstoday #ukmathsteachers #mathsteachers

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Nathan Day @nathanday.bsky.social · 01/10/2026

It's tricky to do a proper #MathsToday today as I've spent all in Bristol for a meeting. However, I've managed to spend a bit of time on the train back planning some Year 8 Ratio lessons, which reminded me of this rather unusual Combining Ratios Completion Table. interwovenmaths.com/small-tasks

A 5-by-5 table showing ratios between a, b, c, d and e. The diagonal entries a:a, b:b, c:c, d:d and e:e are all 1:1. Given entries are a:b = 5:3, b:c = 6:7, d:a = 9:4 and e:d = 11:12. All other ratios are blank to be completed.

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Paddy MacMahon @paddymacmahon.com · 01/10/2026

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.

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Colin Foster @colinfoster77.bsky.social · 01/10/2026

This short video introduces the idea that some functions are not differentiable everywhere: www.twominutemath.org/gallery/allf... Go to the website to view 160+ short videos for school and beginning university mathematics - all free to use however you wish. #MathEd #ukmathschat

twominutemath.org

Are all functions differentiable? – 2-Minute Math

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Nathan Day @nathanday.bsky.social · 30/09/2026

In #MathsToday, I introduced some students (and colleagues) to Oliver Heaviside and his 'cover-up method' for partial fractions. While not ideal for exams, as it isn't much of a written method, I find it a handy check and I'm surprised so many haven't heard of it! en.wikipedia.org/wiki/Heavisi...

en.wikipedia.org

Heaviside cover-up method - Wikipedia

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Jonathan Hall @studymaths.bsky.social · 30/09/2026

I introduced quadratic sequences with Y11 in #MathsToday with this matching activity.

Four quadratic sequences, each with three different representations - a diagram, the number sequence and the nth term rule.

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Andrew @andrewmaths1.bsky.social · 30/09/2026

TMUA/ESAT Resources Update: Due to popular demand I've uploaded the worksheets and answers in pdf form on Google Drive. Link below. drive.google.com/drive/folder... Please let me know if you find any errors. Questions are taken from lots of sources, some are more obscure than others. c:

drive.google.com

TMUA Resources (on bsky) - Google Drive

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Stuart @sxpmaths.bsky.social · 30/09/2026

Just spotted this AQA question (AS 2020) - nice tying together of skills

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Dave Jones @davegjones.bsky.social · 30/09/2026

This starting point has me thinking: inequalities, proof, written and verbal communication could all be explored. I haven't tried it with a class yet but I was surprised how much there is to consider. If a<b<ab then what can we say about a & b? If a<ab<b? If ab<a<b? #ALevelMaths

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Jenna Laib @jennalaib.bsky.social · 29/09/2026

NEW BLOG POST Making Corrections When do we correct the answer, and when do we correct the problem? A first grader and a sixth grader revise their work, and sometimes the question itself. Link below: jennalaib.com/2026/09/29/m...

jennalaib.com

Making Corrections

I sat down next to first grader Grace as she worked on a few subtraction problems. She was holding her pencil carefully — duck grip — with eyes tightly focused on her paper. I peered ov…

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Nathan Day @nathanday.bsky.social · 28/09/2026

We also, naturally, also looked at the opposite - scenarios which look very different on the surface, but have the same underlying mathematical structure.

Bonnyrigg Rose beat East Fife 4–2. A 3 × 5 grid is provided to explore the question: “How many different scores could there have been at half time?” The score 3–1 is shown as an example.

Two-digit numbers are formed where the first digit is a square number and the second digit is odd. A 3 × 5 grid is provided to explore how many numbers are possible, with 47 shown as an example.

The number 400 with the question: “How many different factors does this number have?” A 3 × 5 grid, labelled “Power of 2” and “Power of 5”, represents possible factors. 2^3*5^1=40 is shown as an example.

Four counting problems linked by the question “Why do these questions all have the same answer?” The problems concern possible half-time scores in a 4–2 football match, factors of 400, two-digit numbers with a square first digit and odd second digit, and the number of lines connecting five points to three points.

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Nathan Day @nathanday.bsky.social · 28/09/2026

In #MathsToday, Year 10 were looking at the Product Rule for Counting. We looked at how subtly different scenarios lead to different calculations, each with different geometric/algebraic generalisations. I spent quite a while coming up with a context where all four variations felt meaningful.

Four-part task asking how many outcomes are possible when five students enter a music competition: awarding first and second place; choosing two winners; two judges each secretly voting for a favourite; and awarding Best Performance and Best Composition.

The same four-part music competition task, illustrated using 5 × 5 grids to represent possible pairs of students. Coloured squares show which combinations are possible or distinct in each scenario.

$Generalisation of the music competition task to n students. The numbers of outcomes are shown as n(n-1) for first and second place, {n(n-1)/2 for two winners, n(n+1)/2 for two secret votes, and n^2 for Best Performance and Best Composition.$

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Miss Morris @morrismaths359.bsky.social · 28/09/2026

#Mathstoday One of the things I find is in the lesson students can factorise. As soon as you mix up the questions they can't do it. Got my Yr10 to have a go at these and it was unsurprisingly how much slower they were.

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John Golden @johngolden.bsky.social · 28/09/2026

Doing a @mathmedic.bsky.social #effl lesson with PSTs, polynomials and graphing.

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Jonathan Hall @studymaths.bsky.social · 27/09/2026

Update: Added a few more surface area and volume questions. Example here: mathsbot.com/unitTest?id=...

An example mixed exercise on surface area and volume of 3D shapes.

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Andrew @andrewmaths1.bsky.social · 26/09/2026

@sxpmaths.bsky.social @kerrydunton.bsky.social @ecrmaths.bsky.social et al. Hi y'all! I've written a series of worksheets aiming at TMUA/ESAT candidates, kinda analogous to Tyler Tutoring's worksheets but going a bit beyond. This is the first part on algebra. Answers included. #ALevelMaths

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TomTeach @tommaths.bsky.social · 25/09/2026

Hence thought of the following: For you teaching in a Sixth Form college, you see students coming from outside which are all new to you so might have a different perspective on this: What are the top 3 maths "gaps" you generally see from students fresh from their GCSEs? #ALevelMaths #Mathstoday

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Jo Morgan @mathsjem.bsky.social · 26/09/2026

New! A post about what I've been doing lately in my department & my lessons - hopefully with some ideas for teachers to borrow. Plus a link to my latest podcast with Craig Barton where we chat about set changes, AI for homework and poor use of the equals sign. www.resourceaholic.com/2026/09/sept...

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Miss Morris @morrismaths359.bsky.social · 25/09/2026

#Mathstoday My intervention group had a go at the Doughnut Percents Nrich task. Matching up fraction decimals and percentages nrich.maths.org/problems/dou...

nrich.maths.org

Doughnut Percents | NRICH

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Stuart @sxpmaths.bsky.social · 25/09/2026

In bonus #MathsToday I worked with a student preparing for TMUA - looking at 2023 Paper 2 questions on necessary / sufficient conditions in many contexts, plus advice on how not to be intimidated in questions like this one. Great fun!

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Maths Locke @mathsmuse.bsky.social · 25/09/2026

In #MathsToday yr 10 learned about finding 5% of amounts. Slowly slowly. Their weak numeracy makes it harder but we are getting there. One student can half things really well now, thanks to the springboard 7 materials so I need to use them more!

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Dan Lewis @4301maths.bsky.social · 25/09/2026

Some best-buy questions coming up for Year 8 next week. #ukmathsteachers #mathsteachers #mathstoday

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Nathan Day @nathanday.bsky.social · 25/09/2026

In #MathsToday, Year 13 did some Integrating Factor, Year 10 worked on similar shapes, and Year 8 found some surface areas and volumes of cuboids. interwovenmaths.com/faces-of-cub...

interwovenmaths.com

Faces of Cuboids | Interwoven Maths

Cuboid practice for finding volume and surface area from dimensions or face areas, including missing lengths.

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Jonathan Hall @studymaths.bsky.social · 24/09/2026

Yesterday we looked at algebraic function machines. Year 7 enjoyed making the inputs and outputs with the real tiles and asked me if they could use them again in the next lesson. I also enjoyed using my new pen tool of course! #MathsToday

A function machine using algebra tiles shoing why 3(x + 2) = 3x + 6.

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Dan Lewis @4301maths.bsky.social · 24/09/2026

In #mathstoday a quick "fill in the blanks" and calculating with bounds #mathsteaching #ukmathsteachers

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Hannah @neechmaths.bsky.social · 23/09/2026

In #mathstoday #Alevelmaths yr 1 did hidden quadratics and filled in the blanks with this resource from Swinton maths, yr 2 found intersections of modulus graphs mostly adapting examples taken from the dr frost slides - my new A3 MWBs, fine tip pens and board rubbers got lots of use 😀

swintonmaths.co.uk

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Katie Finlayson @learnwhatyoulive.bsky.social · 23/09/2026

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 :)).

tes.com

Teacher – A Level Maths, Welsh Bridge Campus - Tes Jobs

Shrewsbury College, United Kingdom

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Nathan Day @nathanday.bsky.social · 23/09/2026

In #MathsToday, Year 13 did a new Mathematical Gettier Question linking to Differential Equations (and then we started looking at Integrating Factors).

$Mathematical Gettier Question titled “Second Derivative”. Oona incorrectly finds the second derivative of y=e^{-x^2} by squaring the first derivative. Questions ask students to find the correct second derivative, then solve a differential equation to determine all functions for which Oona’s method would give the correct answer.$

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Erick Lee @theericklee.bsky.social · 23/09/2026

Created an esti-mystery formatted for a newsletter where all the clues can be seen at once instead of revealed one at a time. Can you find the number of buttons in the cup? Suggestions for improvements? #ITeachMaths #MathsToday

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Hannah @neechmaths.bsky.social · 22/09/2026

#AlevelMaths - any recommendations on resources or tips for teaching modulus equations? Must admit I’m a little rusty and want to make sure I am clear. Any advice other than always sketch the graph or if squaring check the solutions in original equation?

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Dave Jones @davegjones.bsky.social · 22/09/2026

#alevelmaths #mathstoday I want to start using polygraph on @desmos.com to improve communication (written and spoken). Any experience good or bad that might be useful?

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Colin Foster @colinfoster77.bsky.social · 22/09/2026

This short video introduces inverse proportion by contrasting a speedometer with a paceometer: www.twominutemath.org/gallery/inve... Go to the website to view 160+ short videos for school and beginning university mathematics - all free to use however you wish. #MathEd #ukmathschat

twominutemath.org

What is inverse proportion? – 2-Minute Math

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Miss Morris @morrismaths359.bsky.social · 22/09/2026

#Mathstoday Yr11 had a go at the mix volume and surface area of prisms sheet from Dr Austin. So many times the student was stuck just because they didn't read the question and was trying to find the surface area on a volume question. www.draustinmaths.com/_files/ugd/7...

draustinmaths.com

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James Brough @jbrough13.bsky.social · 22/09/2026

Lovely day of #ALevelMaths in #MathsToday, introducing the reciprocal trig functions to my Y2 classes as well as the accompanying Pythagorean identities. Always enjoy the opportunity to make the class cringe with "The one with a tan is sexy" and "The one in the cot is cosy".

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Hannah @neechmaths.bsky.social · 22/09/2026

In #MathsToday Yr 1 #AlevelMaths proved the quadratic formula using an underground maths card sort, did some explorative work on key features of quadratic functions using factorised form and completing the square and then completed DrAustin finding quadratic equations from their graphs. Links below

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Nathan Day @nathanday.bsky.social · 22/09/2026

In #MathsToday, Year 8 were doing Plans and Elevations. Inspired by this NCETM Checkpoint, we may have gone on a slight tangent into the history of the Egyptian pyramids. www.ncetm.org.uk/classroom-re...

Checkpoint asking which of four buildings—the Eiffel Tower, Elizabeth Tower, One Canada Square or the Great Pyramid—could have the shown bird’s-eye views. Diagrams show a square with diagonals and a tapered square structure viewed from above.

Solution slide showing possible bird’s-eye-view sketches of One Canada Square and Elizabeth Tower. One Canada Square is represented by overlapping squares with diagonals; Elizabeth Tower by nested squares with diagonal lines and an ornate outer edge.

Aerial view looking directly down on the Great Pyramid of Giza, showing its square base and four triangular faces meeting at the centre.

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Aaron PS @ronpaq.bsky.social · 22/09/2026

Had my amazing Year 9 group changing base with the power rule today to really push them. My they are good. #mathstoday

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