Math Links for Week Ending Oct 30, 2026

Featured Links

Though I don't think it is a huge listenership, I am still happy to give voice to everyday teachers on our OAMEtalks podcast. We are midway through season 9 and continue to preview their webinars which are repeats from the most recent OAME conference. 
Curriculum Tags: All

https://talks.oame.on.ca/season-9

[NewPodcast] This episode feat. Sophie Tyrrel & Michele Goveia previewing their Nov 11th @OAMEcounts webinar "ELLs Can Do Math! Supporting & Celebrating ELLs in the Intermediate Division Gr. 7-10" More info: https://t.co/E8Tg164goW #MathChat #MTBoS #iTeachMath https://t.co/ZS2pj9ibzn

— OAMEtalks (@OAMEtalks) November 1, 2026

Resource Links

This is a relatively simple activity for dealing with linear relationships and their equations but it has a nice context and finishes with a challenge creator (I love challenge creators
Curriculum Tags: MTH1W
https://classroom.amplify.com/activity/6a4d80910b19b661e5484d2c

BOOMSHAKALAKA! I rebuilt one of my old Amplify (Desmos) Classroom activities based on NBA Jam. Sometimes improving a lesson isn’t about what we add. It’s about what we give back to students. https://t.co/zrBISD6wLz... https://t.co/klkj7gCWgS #mtbos #math #desmos #amplify https://t.co/asp64ZXTLf

— Kurt Salisbury, Ph.D. (@kurt_salisbury) October 26, 2026

Video Links

Nice logic problem
Curriculum Tags: All
https://bsky.app/profile/howiehua.bsky.social/post/3mz23ldjfak2b

There are 25 Voltorb. You can only race 5 at a time and you have no timer. Can you find the 3 fastest Voltorb in the fewest number of races?

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— Howie Hua (@howiehua.bsky.social) October 29, 2026 at 4:18 PM

Image Links

A nice puzzle for solving equations with integer answers
Curriculum Tags: MTH1W
https://x.com/pickover/status/2116265248785318364

Math. A puzzle for teachers to give their students. (Or, ask people half your age if there is any solution to this, and tell them they have half a minute to solve it.) https://t.co/BE8AAouPOb

— Cliff Pickover (@pickover) October 30, 2026

A Venn diagram for hockey fans
Curriculum Tags: MDM4U
https://x.com/JoshuaBarzon/status/2114004432186716380

What a Venn diagram! https://t.co/1bsdOs4M1J

— Josh Barzon (@JoshuaBarzon) October 24, 2026

Math Links for Week Ending Oct 24th, 2026

Featured Links

This reminds me that a Desmos activity doesn't need a lot of bells and whistles to be useful. Thanks to @MaryBourassa.bsky.social for this one
Curriculum Tags: MHF4U
https://classroom.amplify.com/activity/5623e5c61dd697a010ec19cb

Resource Links

Do you want some math-centric fun things designed by some of the best math/science communicators on the web? Look no further
Curriclum Tags: All

https://mathsgear.co.uk/pages/about-us

Did you know that the Maths Gear newsletter is still written by a human?! I am that human! and if you want to receive the newsletter which comes out on average once a month, you can do so here mathsgear.co.uk/pages/newsle... The next one is scheduled for today at 3:33pm, so you have time! 💗

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— Ayliean (@ayliean.bsky.social) October 23, 2026 at 6:38 AM

Video Links

I have seen this as a static image but I think this might be the first video version that I can remember
Curriculum Tags: MCR3U, MHF4U
https://x.com/Math_files/status/2113322273512055129

When functions begin to dance, even the world’s greatest dancers lose the rhythm of their steps. https://t.co/eNxJekdoPa

— Math Files (@Math_files) October 22, 2026

I have said it before but I like talking about this issue.
Curriculum Tags: MTH1W, MPM2D
https://x.com/howie_hua/status/2113386955262267394

Four arguments for why 0.9 repeating equals 1 https://t.co/3qJCuIWoB9

— Howie Hua (@howie_hua) October 22, 2026

Nice visualization of powers of 3
Curriculum Tags: MTH1W, MPM2D, MCR3U
https://x.com/fermatslibrary/status/2113588733324759122

Powers of 3 https://t.co/obphgRUv7N

— Fermat's Library (@fermatslibrary) October 23, 2026

Image Links

Who doesn't love Pythagorean Tripples in the calendar?
Curriculum Tags: All
https://bsky.app/profile/mathnerd1729.bsky.social/post/3mykzrjqhwc2k

I missed it the previous time it happened due to being busy with a close relative's birthday, so I had to make sure to acknowledge it earlier this time otherwise I'd definitely get my nerd card revoked! #MathSky #Mathematics #PythagoreanTheorem #MathChat #MathsChat

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— Math Nerd 1729 (@mathnerd1729.bsky.social) October 23, 2026 at 4:36 PM

This can be scary :-)
Curriculum Tags MDM4U
https://bsky.app/profile/curiouspolymath.bsky.social/post/3myipfi4tqc2w

#mathsky

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— Pete Wung The Curious Polymath (@curiouspolymath.bsky.social) October 22, 2026 at 6:25 PM

 

Math Links for Week Ending Oct 16, 2026

Featured Links

I love this interview with @stevenstrogatz, especially when he actually swears :-) All joking aside, I like the way he talks about the issues of how AI is now taking down some of the biggest math theorems and causing an existential crisis among mathematicians.
Curriculum Tags: All
https://radiolab.org/podcast/math-vs-machine

It's always fun to go on @Radiolab. Hope you enjoy this episode! https://t.co/jvGwLIaMDk

— Steven Strogatz (@stevenstrogatz) October 9, 2026

Resource Links

A combinatorics card game for your students
Curriculum Tags: MDM4U
https://jclevelandtran.com/2022/01/26/letter-scramble/

Played this game in my Pre-Calc class today. I think it might be one of the best games I've made - they all had lots of fun AND it gave them lots of practice. jclevelandtran.com/2022/01/26/l... #iteachmath

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— James Cleveland-Tran (@jclevelandtran.com) October 15, 2026 at 2:45 PM

Video/Audio Links

I should have posted this earlier but OAME members can see the recording of this webinar in the Members Only section of the OAME website
Curriculum Tags: All
https://talks.oame.on.ca/season-9



Ye old licence plate problem. A classic of any combinatorics lesson
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2110851341283463632

I was wrong in my last video about California license plates 😱 https://t.co/UJubw4rZaH

— Howie Hua (@howie_hua) October 15, 2026

Image Links

A quick function matching worksheet
Curriculum Tags: MHF4U
https://bsky.app/profile/morrismaths359.bsky.social/post/3mxwlnecvts27

#Mathstoday My year 11s had a go at this lovely Dr Austin task today - Recognising graphs. They not been exposed loads to cubic of reciprocal graphs so did find it hard at time but most of them got there in the end.

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— Miss Morris (@morrismaths359.bsky.social) October 15, 2026 at 1:30 PM

Math Links for Week Ending Oct 9, 2026

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I've not watched the show Traitors but I have started to now that @FrySquared is a contestant on the current season of Celebrity Traitors. Here she explains the math of how she is going to figure out who the traitors are using combinatorics among other things. Thanks to @mathsjem for pointing this out.
Curriculum Tags: MDM4U
https://www.youtube.com/watch?v=twDvxNooI_4

Resource Links

I think that people, in general, not just students, have trouble understanding big numbers. At this link you can try to spend all of Elon Musk's money.
Curriculum Tags: All
https://www.wired.com/story/spend-elon-musk-money/

Big numbers are very hard to develop an intuition for. That's why this little game from @wired.com is so surprising and fun www.wired.com/story/spend-...

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— Dan Finkel (@mathforlove.bsky.social) October 9, 2026 at 2:04 AM

Video Links

It's interesting that trisection does this 
Curriculum Tags: Gr8, MTH1W
https://x.com/Math_files/status/2106593150022357186

Every triangle hides an equilateral triangle, even when the original triangle is completely irregular. Take any triangle. Divide each of its three angles into three equal parts. Now consider the intersections of the adjacent internal angle trisectors. The three intersection points always form an equilateral triangle. No condition is required: The original triangle may be acute, obtuse, scalene or isosceles. Its sides may have any lengths. Its angles may be completely different. Yet the hidden triangle always has three equal sides and three 60° angles. This is Morley’s trisector theorem. Local divisions of three unrelated angles produce perfect global symmetry.

— Math Files (@Math_files) October 4, 2026

I like how he always tries to visualize things
Curriculum Tags:MDM4U
https://x.com/howie_hua/status/2108280168280465592

Okay I MIGHT have found a new way to visually obtain the harmonic mean because I could not find this visual anywhere. Even if it's not new, I'm still really proud of it because it's understandable and valid. https://t.co/RSq0na7X1Y

— Howie Hua (@howie_hua) October 8, 2026

Neat visualization of Fibonacci numbers

Curriculum Tags: All

https://x.com/TheMathFlow/status/2108117450613227797

Fibonacci: From curves to cubes and back to curves. https://t.co/YnxSAaa8KL

— The Math Flow (@TheMathFlow) October 8, 2026

Image Links

@Howie_Hua has focused a lot on mean lately
Curriculum Tags: All
https://x.com/howie_hua/status/2106418942420115798

Mean Girls but it's a movie about Cady learning the different types of mean https://t.co/i8Oii0HDJ3

— Howie Hua (@howie_hua) October 3, 2026

Though I think that kids vape more than they smoke now, this is still good data
Curriculum Tags: All
https://x.com/infobeautiful/status/2108618436574085414

How many people still die of lung cancer after quitting smoking? By age (by reddit user @daysleeperrr) https://t.co/r9skK72m6p

— Information is Beautiful (@infobeautiful) October 9, 2026

Math Links for Week Ending Oct 3, 2026

Featured Links

I appreciate that @KarenCampe brings these old problem sets and makes them new again
Curriculum Tags: All
https://karendcampe.wordpress.com/2026/10/01/october-calendar-problems-4/

The October #ProblemSolving calendar is here!
Enjoy with your students or solve them yourself. Share your thinking here or on the post. #MTBoS #iTeachMath #T3Learns #RecreationalMathhttps://t.co/g9bmVoHrvy

— Karen Campe (@KarenCampe) October 1, 2026

Resource Links

Matrices are no longer in the Ontario Math curriculum but you can still employ them when dealing with 3D vectors
Curriculum Tags: MCV4U
https://help.desmos.com/hc/en-us/articles/49219289186317-Matrices

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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— Desmos Studio (@desmos.com) October 2, 2026 at 10:14 AM

Make your own suggestion
Curriculum Tags: All
https://x.com/howie_hua/status/2105676830435061899

Since it's spooky season, make a math term scary in the comments. I'll start:

BOOclidean algorithm

— Howie Hua (@howie_hua) October 1, 2026

Video Links

This is a good context for describing what a fraction could represent
Curriculum Tags: Gr7, Gr8
https://x.com/howie_hua/status/2106123154565583126

I have seen a LOT of people overthink this type of problem. Are you overthinking it? pic.twitter.com/bPbH0XdO0Y

— Howie Hua (@howie_hua) October 2, 2026

It's good to understand how different averages are calculated but more, what they represent.
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2106381257919881275

Happy Mean Girls Day! Let's learn about the arithmetic, geometric, and harmonic mean pic.twitter.com/NIQBA7SbBn

— Howie Hua (@howie_hua) October 3, 2026

Image Links

The printing is so small it's hard to see but this is perfect when you want to show your kids what a useless graph is. Thanks to @JoelBezaire for this one
Curriculum Tags: MDM4U
https://bsky.app/profile/joelbezaire.bsky.social/post/3mwvpim5q7s22

This is the funniest thing I've seen today, possibly ever

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— Tim Carmody (@tcarmody.bsky.social) October 2, 2026 at 10:39 AM

Math Links for Week Ending Sept 25th, 2026

Featured Links

I always like it when I come across a structure that I've never seen before.
Curriculum Tags: All
https://ponderingplanning.wordpress.com/2026/09/09/what-would-happen-if-i-changed-the-question/

New blog post - Explores one of my favourite questions to ask after finishing a worked example: What would happen if I changed the question? wp.me/p9t8DE-s8 #mathschat #MTBoS #ukmathschat #iTeachMaths

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— Paul Rowlandson (@drrowlandson.bsky.social) September 12, 2026 at 3:20 AM

Resource Links

Who doesn't like a good New Order graph?
Curriculum Tags: All
https://bsky.app/profile/theericklee.bsky.social/post/3mvuqrsgjh22j

Math teacher at the gym... on the eliptical machine listening to New Order's Blue Monday and thinking, "I could re-create this animation on @desmos.com." Here is the result www.desmos.com/calculator/k... #ITeachMath

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— Erick Lee (@theericklee.bsky.social) September 19, 2026 at 9:06 AM

A lot of people are talking about the idea of whether AI makes learning math meaningless. Here is one take. I like the following question: "Have we caused this ourselves, with our focus on evaluating the product rather than process? "
Curriculum Tags: All
https://amiealbrecht.com/2026/09/10/should-we-take-the-keys-away-mathematics-in-the-age-of-ai/

Listening to the recent ICM panel discussion on 'What Is Math For in the Age of AI?' got me thinking about a much older question. What do we value in learning mathematics? Read my latest blog post here: amiealbrecht.com/2026/09/10/s...

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— Amie Albrecht (@nomadpenguin.bsky.social) September 9, 2026 at 10:28 PM

 

And here's another take: "Why Do We Need Human Mathematicians Anymore?"

Curriculum Tags: All
https://terrytao.wordpress.com/2026/09/19/why-do-we-need-human-mathematicians-anymore/

Video Links

I like problems that deal with trying to make sense of really big numbers
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2103578072872255878

Which is greater: 50⁹⁹ or 99! pic.twitter.com/1CyQrFJxJ1

— Howie Hua (@howie_hua) September 25, 2026

Image Links

This seems like an interesting way to extend the ideas of Pythagorean Theorem
Curriculum Tags: Gr8, MTH1W
https://x.com/jamestanton/status/2103385765589712963

A 7-11-13 triangle is a "near-miss Pythagorean triangle." We have
a^2 + b^2 = c^2 + 1
for integer sides a,b,c.
Other examples of such near misses? pic.twitter.com/GheH4776lg

— James Tanton (@jamestanton) September 25, 2026

I think you can ask this of most pieces of mathematical content. That is, it's mostly just "stuff". Exercise for the mind. 
Curriculum Tags: All
https://x.com/jamestanton/status/2102651930468110605

Actually ... let me press on this.

What are three reasons why students need to how to factor integer quadratic expressions? If the answer is that they will need to know this later on, what exactly is the "later on"?

[I am not being solely ornery here. I am happy to teach any… pic.twitter.com/c0JDfjJ8Mg

— James Tanton (@jamestanton) September 23, 2026

Math Links for Week Ending Sept 18th, 2026

Featured Links

Start a discussion, collaboration, or artistic rendering
Curriculum Tags: All
https://www.fractalkitty.com/mathober-2026-prompts/

#iTeachMath yay art!

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— Dr. Maria at Natural Math (@maria-naturalmath.bsky.social) September 11, 2026 at 7:29 AM

Resource Links

I love that there is a mathematical solution to a puzzle based on words
Curriculum Tags: All
https://www.sciencedaily.com/releases/2026/09/260911204910.htm

www.sciencedaily.com/releases/202... Researchers find a Wordle strategy that wins 99% of the time A mathematical strategy that prioritizes information over lucky guesses can solve Wordle 99% of the time #math #maths #MathSky #MTBoS #iteachmath #Wordle #ShannonEntropy #InformationTheory

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— Dawn Del Vecchio (@dawndelvecchio.bsky.social) September 17, 2026 at 5:59 PM

Video Links

He has talked about this before and I like it every time
Curriculum Tags: All
https://x.com/howie_hua/status/2100668449425158173

Teaching tip: consider saying "ask me at least 2 questions" instead of " do you have any questions?" to help normalize questions pic.twitter.com/IeNJbqKec0

— Howie Hua (@howie_hua) September 17, 2026

Image Links

Can your students do this without a calculator?
Curriculum Tags: MTH1W
https://bsky.app/profile/pwharris.bsky.social/post/3mvofmauijc2w

It's time for #MathStratChat! Rules: post your favorite or a clever solution! It's also fun to comment on other's strategies. Tell us about your reasoning. Like/share so others can see! #MathIsFigureOutAble #MathStratChat #MTBoS #ITeachMath #MathEd

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— Pam Harris (@pwharris.bsky.social) September 16, 2026 at 8:30 PM