iiinova — where your digital self keeps evolving

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Jonathan Hall @studymaths.bsky.social · 18/09/2026

UPDATE: I've just added a pen overlay tool to the Algebra Tiles. It needs a bit of tweaking (rubber tool etc) and once I'm happy I'll roll it out to the rest of the manipulatives. mathsbot.com/manipulative...

A screenshot of the Algebra Tiles tool with the new pen overlay being used. In this case to complete the square.

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Jonathan Hall @studymaths.bsky.social · 13/09/2026

I was reminded of this task by @morrismaths359.bsky.social earlier this week. It's one of my favourites, so I've recorded a quick video to demonstrate how you can model a solution using prime factor tiles. Video in the next post...but first here's the task.

2, 3, 4, 5, 6, 7, 8, 9, 10

Fill the blanks with the numbers above to make the calculation correct. One number is not used.

__ × __ × __ × __ = __ × __ × __ × __

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Catriona Agg @catrionaagg.bsky.social · 13/09/2026

This is a great blog, and there’s even a whole resource of example questions - from multiple topics - to download at the end! Has anyone else used this idea? What examples did you use, and what changes did you consider?

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Jo Morgan @mathsjem.bsky.social · 30/08/2026

New! My 202nd gems post. Ideas, updates and resources for maths teachers. 💎 www.resourceaholic.com/2026/08/5-ma... #ukmathschat

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Jo Morgan @mathsjem.bsky.social · 05/07/2026

New! My 200th gems post. Ideas, updates and resources for maths teachers. 💎 www.resourceaholic.com/2026/07/5-ma... #mathstoday #ukmathschat #alevelmaths

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Paul Rowlandson @drrowlandson.bsky.social · 21/05/2026

Really pleased to have an article included in the latest issue of 'Mathematics in Schools' by @amiemathematics.bsky.social m-a.org.uk/mathematics-...

Front cover for journal 'Mathematics in School', Vol 55, No. 3, May 2026.

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Paul Rowlandson @drrowlandson.bsky.social · 05/02/2026

Just been catching up with some Winter Olympics curling. It was fun to see how the referees determine close call decisions by using the same method as KS3 students do in this task about constructions on @oaknational.bsky.social #mathstoday #mathschat

A screen shot of a curling match at the Winter Olympics. The end has finished with two red stones and one yellow stone that appear almost equidistant from the centre of the circle. The referee is trying to determine whether each of the red stones is closer to the centre than the yellow stone. There is a measuring rod attached to the centre of the circle, with a marker set to the inner edge of the yellow stone. The referee will pivot the rod around the centre of the circle to see whether the marker touches each of yhe two red stones.

A screenshot of a maths task. There is a cross on the page with ten points marked around it, each a similar distance from the cross. The question says:

Aisha marks a cross on a piece of paper and marks a point exactly 5 units away from it. She asks everyone else to mark a point 5 units away from the cross.
a) How could you use a pair of compasses to check whether everyone's point is the correct distance away from the cross?
b) Whose point is too close to the cross?
c) Whose point is too far from the cross?

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Jo Morgan @mathsjem.bsky.social · 30/10/2025

New! My 193rd gems post. Ideas, resources and updates for maths teachers. 💎 www.resourceaholic.com/2025/10/5-ma... Hat tips to follow. #mathstoday #ukmathschat

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Paul Rowlandson @drrowlandson.bsky.social · 21/10/2025

Another plug for my latest post 👇🏻👇🏻👇🏻 #EduSky #MathsChat #iTeachMaths

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Katie Steckles @steckl.es · 18/10/2025

Excitingly, Today's the opening day of MathsWorld, the new hands-on maths museum in London. I've really enjoyed visiting MathsCity in Leeds, but they've now got a London location too! Details at mathsworld.com

mathsworld.com

MathsWorld – London’s new Museum of Mathematics

MathsWorld is an interactive museum in London with innovative hands-on exhibits that explore the beauty, wonder, and everyday relevance of mathematics for visitors of all ages.

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Paul Rowlandson @drrowlandson.bsky.social · 19/10/2025

When you're a maths teacher with a baby, your friends know what to buy for them.

Two children's books: 'Under the Sea 1, 2, 3' by Frané Lessac and 'Pythagorean Theorem for Babies' by Chris Ferrie and Mike Ziniti.

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Paul Rowlandson @drrowlandson.bsky.social · 18/10/2025

Latest blog post: 'Thinking About Perpendicular Bisectors' looks at teaching compass and ruler constructions for undertanding by breaking it down into small steps. 🔗 wp.me/p9t8DE-r0 #EduSky #Mathschat #MathSky

A horizontal line with six perpendicular lines. There is a large arc made from placing a compass at the right edge of the horizontal line. There are six arcs of increasing size, made from placing a compass at the left edge of the horizontal line.

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Dan Draper @dandraper.bsky.social · 17/09/2025

#MathsToday Teaching histograms to year 11 this week and returned to @drrowlandson.bsky.social’s amazing planning series to start. So much deep thought and insight in every post! 🙌 ponderingplanning.wordpress.com/2020/06/05/f...

ponderingplanning.wordpress.com

Filling in the Gaps With Histograms

This blog posts focuses on the sorts of histograms that students see in GCSE Mathematics: histograms with unequal class intervals and where the heights of the bars represent frequency density.&nbsp…

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NCETM @ncetm.bsky.social · 03/09/2025

Non-specialist maths teachers! 🎥 See how the Non-specialist SKTM Programme could boost your confidence & improve your teaching! 💵 Schools joining the 2025/26 @theeef.bsky.social trial get £500–£1000! 💻 Online cohort available ⏰ Apply by 12 September bit.ly/4lRxAoW #Maths #EduSky #UKMathsChat

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NCETM @ncetm.bsky.social · 18/07/2025

🎞️ They don’t seek the spotlight, but they shape the future of maths every day. As another academic year ends, we want to celebrate EVERYONE across the 40 Maths Hubs who has worked tirelessly to make the programme a continuing success 👏 #Maths #EduSky #UKMathsChat

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Jo Morgan @mathsjem.bsky.social · 05/07/2025

New post! 'Conferences and Catching Up'. A write up of the events I've attended in the last couple of weeks and a summary of the current talking points in maths education. www.resourceaholic.com/2025/07/conf... #ukmathschat #mathstoday #meiconf2025

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Nathan Day @nathanday.bsky.social · 08/07/2025

Calling all Maths teachers! What are some of your all-time great tasks for secondary Maths? Ones that could have their place in any curriculum, one that should be studied in PGCE courses, ones that started whole new genres of tasks... ... or just ones you really like. (see some of mine below)

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Paul Rowlandson @drrowlandson.bsky.social · 11/06/2025

Any schools don't have a full maths department for September or have teachers from other subjects teaching maths might find the programme below helpful. 👇🏻 It's fully funded training for non-specialist teachers of maths, supporting them to teach maths confidently and in depth. #ukmathschat

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Dr. Jen Shearman @jenshearman.bsky.social · 10/06/2025

Over the last couple of months I have been watching - Expertly designed and led PD - With out-of-field maths teachers 'growing' their identity as mathematician, - Become even better at teaching students who need maths teachers the most. So important that these programmes externally evaluated. (1/n)

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Catriona Agg @catrionaagg.bsky.social · 09/06/2025

Properties of quadrilaterals with Y8. They sort of know this all already but it still always seems like a bit of a slog! Today we did everything on this hierarchical diagram rather than as a list, which I hope made it seem more logical. #MathsToday

A diagram with the names of quadrilaterals and arrows showing which are special cases of the others.
Red annotations show properties relating to parallel sides.

The same basic diagram, with annotations in purple to show properties relating to equal length sides.

The same basic diagram, with annotations in blue to show properties relating to angles.

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NCETM @ncetm.bsky.social · 05/06/2025

With around 1 in 8 KS3 maths lessons being taught by non-specialists, it's vital we support them 📹 Step inside a real Work Group to hear how Maths Hubs are helping non-specialist teachers thrive #Maths #EduSky #UKMathsChat www.youtube.com/watch?v=sTk5...

youtube.com

Boost your confidence teaching maths | Secondary Non-specialist SKTM Programme

YouTube video by NCETM

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NCETM @ncetm.bsky.social · 03/06/2025

Teaching maths without a specialist background? You’re not alone. 🎥 In our new video, teachers explain how the Secondary Non-specialist Teachers SKTM Programme has boosted their classroom confidence (and more!) #Maths #EduSky #UKMathsChat

youtube.com

Boost your confidence teaching maths | Secondary Non-specialist SKTM Programme

YouTube video by NCETM

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Claire Clay @cclay8.bsky.social · 28/05/2025

Last year I made this power point it shows the key calculator buttons on the two Casio’s new and old next to each other. Might be useful in the coming week. docs.google.com/presentation...

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Catriona Agg @catrionaagg.bsky.social · 21/05/2025

More Y9 trig #MathsToday: we ditched the tables in favour of drawing multipliers directly onto the triangles. This lesson went pretty well! Still just using sin and cos, and today I kept everything in one orientation as well.

Three triangles, with working in a ratio table to find a missing length.

The same three triangles and answers with the tables removed, and the title How might we skip the table?

The reference triangle with multipliers drawn on: x sin(a) goes from the hypotenuse of 1 to the opposite of sin(a), and x cos(a) goes from the hypotenuse of 1 to the adjacent of cos(a).

Four questions that have been solved by drawing multipliers onto the triangles

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MathsCity Leeds @mathscityleeds.bsky.social · 21/05/2025

We’re celebrating National Numeracy Day in style with the installation of new exhibits in our Code Breaking and Our Chaotic Earth collections! Be the first to see them this May half term alongside our curve stitching activities! #NationalNumeracyDay

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Paul Rowlandson @drrowlandson.bsky.social · 17/05/2025

I have recently co-authored two research papers based on the work for my doctoral thesis. It develops on previous cognitive science research about interleaving, while focusing specifically on secondary school mathematics. #cogsci #maths 🧵👇 (1/n)

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Catriona Agg @catrionaagg.bsky.social · 13/05/2025

Y7 #MathsToday: how would you convince someone these two shapes have the same area?

A parallelogram and rectangles drawn on a square grid. Annotation on the right shows two student suggestions: count the squares, and cut up and move. The squares in each shape have been numbered to show how they might be counted.

The same two shapes. Yellow highlighting in the parallelogram shows how it can be cut up and rearranged so that there are no half squares, creating a staircase-like shape.

The same two shapes. Yellow highlighting in the parallelogram shows how it can be cut once and rearranged to make a rectangle.

The same two shapes. Yellow highlighting in the parallelogram shows how it can be cut twice and rearranged to make a rectangle.

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MEI @meimaths.bsky.social · 09/05/2025

Whether you're interested in developing a post-16 Data Science curriculum or re-imagining PowerPoints for your A level classroom, our #MEIConf25 has it all! Have you attended our conference before? Let us know what you thought 💬 Book your place today ➡️ buff.ly/zeyJcWL

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Paul Rowlandson @drrowlandson.bsky.social · 09/05/2025

This is such an interesting podcast series. It's full of lovely stories about working in Special Ed and useful takeaways for teaching maths to students with SEND.

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NCETM @ncetm.bsky.social · 14/04/2025

You might not know yet who’ll teach KS3 maths next year but if it could be a non-specialist, the SKTM Programme is worth a look 👀 Fully-funded PD to ensure maths teaching that improves outcomes 💪 #Maths #EduSky #UKMathsChat

ncetm.org.uk

CPD for non-specialists that strengthens maths departments

How do Maths Hubs support teachers whose main subject isn’t maths?

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NCETM @ncetm.bsky.social · 11/04/2025

🤔Just how do you evaluate something as complex as maths PD? Short answer: not very easily. But we're going in! 💪 Find out more, as we discuss why we're doing it and how it could shape the future of Maths Hubs' work. 🎧 Go to www.ncetm.org.uk/podcasts/eva... or via your podcast app #UKMathsChat

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NCETM @ncetm.bsky.social · 08/04/2025

🔮 If non-specialists might be teaching maths next year, now’s the time to explore support! The SKTM Programme builds subject confidence and strengthens departments, at no cost to schools. Start thinking ahead 👉 #Maths #EduSky #UKMathsChat

ncetm.org.uk

CPD for non-specialists that strengthens maths departments

How do Maths Hubs support teachers whose main subject isn’t maths?

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Oak National Academy @oaknational.bsky.social · 02/04/2025

🤑 Help your pupils navigate the world of online spending and scrutinise claims by online influencers and ads with our brand new financial education units for KS1 to KS4! Topics covered range from exploring what money is and how we get it, all the way to inflation, budgeting and cryptocurrency.

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Howie Hua @howiehua.bsky.social · 27/03/2025

My response to comments saying "Just teach the algorithms!" youtu.be/TpJPNI76L-U?...

youtu.be

My response to comments saying "Just teach the algorithm!"

YouTube video by Howie Hua

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Ben Sparks @sparksmaths.bsky.social · 31/03/2025

It's almost a new tax year. Here's my visualisation of how income tax works (or did in 2023-24). Explainer vid: youtu.be/zXJCyffu8Og Interactive version: www.geogebra.org/m/p97htgc3

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Karen Campe @karencampe.bsky.social · 22/03/2025

Really nice post, I like all the possible extensions. I did the 30°-60°-90° right triangle in this post... but you provide the proof in yours, thanks! #iTeachMath #MathsToday #geometry karendcampe.wordpress.com/2020/05/26/e...

karendcampe.wordpress.com

Easy Angles

Check out my entry in “The Big Lock-Down Math-Off” from The Aperiodical. Read both posts and vote for your favorite. I share some angle-measuring tools you can easily create when you f…

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Paul Rowlandson @drrowlandson.bsky.social · 17/03/2025

👇🏻This is a blog version of a workshop I ran for #MathsConf37, about adapting a single paper-folding task to suit different classes. It also contains a link to a PPT with step-by-step instructions for pupils, which can be copied into a lesson resource. #mtbos #ukmathschat

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Karen Campe @karencampe.bsky.social · 17/03/2025

New blog post! "Marvelous Midsegments" Go For Geometry! Episode 5. Activities exploring on all technology platforms: Desmos, GeoGebra & TI calculators. Taking the scenic route 😉 #geometry #MTBoS #iTeachMath #MathsToday karendcampe.wordpress.com/2025/03/16/g...

karendcampe.wordpress.com

Go For Geometry! 5

Using Dynamic Technology to Build Understanding ◊ Episode 5: Marvelous Midsegments ◊ Welcome to Episode 5, where we take the scenic route in our geometry journey. What happens when we find midpoint…

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Catriona Agg @catrionaagg.bsky.social · 17/03/2025

Started pythagoras with Y9 in #MathsToday. I really like these questions that start with areas of squares, and gradually remove the squares until it’s just side lengths. Would highly recommend @drrowlandson.bsky.social’s blog post about this approach ponderingplanning.wordpress.com/2022/10/15/t...

Where possible, find the missing values. (If it's impossible, say why.)

Each diagram shows three squares joined together.
Find the area of the blue square.

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Tom Gough @mister-gough.bsky.social · 08/03/2025

In #mathstoday (well, yesterday) I began my journey with Y10 towards further trig, specifically the sine rule, via circle theorems after being inspired by Don Steward (donsteward.blogspot.com/2012/04/sine...). This meant a lesson on constructions and thinking about centers of triangles. Great fun!

donsteward.blogspot.com

sine rule from circle theorems

ideas and resources for mathematics teachers of 10 to 16 year olds

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Paul Rowlandson @drrowlandson.bsky.social · 09/03/2025

This is such great advice for anyone who is applying for teaching jobs! 👇🏻 Thanks for sharing @mathsjem.bsky.social

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Complete Mathematics @lasalleed.bsky.social · 08/03/2025

We've been building up to this! 🚀 Our final #MathsConf37 workshop announcements are here. 🔗📊 Making Connections between Representations Used for Ratio and Proportion ⚖️ This will also be run by @nfareham.bsky.social and @VicciM 🎟️ Book their workshop here: completemaths.com/community/ma...

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NCETM @ncetm.bsky.social · 06/03/2025

What’s your favourite maths book? 📚 This #WorldBookDay, NCETM staff & podcast guests share their top picks (for children or adults) that celebrate the beauty of maths✨ Are any of your favourites on the list? Share in the comments below!👇 #Maths #EduSky #UKMathsChat

ncetm.org.uk

Counting on a good read: maths books we love for World Book Day

To celebrate World Book Day we share some of our favourite books about maths for all ages

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