Math Links for Week Ending July 17th, 2026

Featured Links

I have always liked @SimonKuestenmacher's shares but I like when other teachers like @MaryBourassa, see the connections to math class. In this case with fractions
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/marybourassa.bsky.social/post/3mqk26esj722o

The world’s 8.2 billion people, shown as a single tree map. India and China dominate, Africa is already nearly twice the size of Europe, and Australia barely registers. Source: buff.ly/P5OtmPg

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— Simon Kuestenmacher (@simongerman600.bsky.social) July 13, 2026 at 8:01 AM

Resource Links

You can never have too many Calculus resources. 
Curriculum Tags: MCV4U
https://ocw.mit.edu/courses/res-18-001-calculus-fall-2023/

FREE Math Book. 705 pages.

"Calculus" by Strang. Highly recommended for its clear explanations and practical engineering focus.
1. Intro
2. Derivatives
3. Applications of Derivatives
4. Derivatives and the Chain Rule
5. Integrals
6. Exponentials and… pic.twitter.com/YUh5bqUDcp

— Cliff Pickover (@pickover) July 12, 2026

Video Links

I think the comparison to the word diagonal is a good way to do this. 
Curriculum Tags: All
https://x.com/howie_hua/status/2078170427864850554

How to pronounce pentagonal, hexagonal, heptagonal, and polygonal pic.twitter.com/36ARdE9moP

— Howie Hua (@howie_hua) July 17, 2026

Image Links

I love this for having students show that they know the connections between functions and their first and second derivatives.
Curriculum Tags: MCV4U
https://x.com/pickover/status/2076124990466892099

Mathematics.

Need an exam question for Calculus? Which graph is f, f’, and f” ? (by @dansmath, used with permission). pic.twitter.com/a8joMByNdv

— Cliff Pickover (@pickover) July 12, 2026

Some similar angles and algebra for your students
Curriculum Tags: MPM2D, MCR3U
https://x.com/jamestanton/status/2076160370675154953

How we left our rakes today reminder me of a famous math puzzle.
What's h in terms of a and b?
[Curiously, the answer does not depend on how far apart the walls are!] pic.twitter.com/dw1wzBCAyX

— James Tanton (@jamestanton) July 12, 2026

Math Links for Week Ending July 3rd, 2026

Featured Links

I always appreciate the work that @DavidButlerUoA does, especially when he puts it all together and shares. In this case, constructions using 2 sides of a ruler. I don't know that this fits into any particular curriculum and that's the beauty of it. It starts with some introductory constructions and quickly ramps up.  
Curriculum Tags: All
https://davidkbutler.xyz/2026/06/25/two-sided-ruler-constructions-1-introduction/

#MathSky Finally, I've updated the first post in the series with a link to the playlist of videos and an index of links to every individual construction in all eight posts. Now you (and I) can find anything I've written about two-sided ruler constructions anytime. davidkbutler.xyz/2026/06/25/t...

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— David K Butler (@davidkbutler.bsky.social) July 3, 2026 at 8:25 PM

Resource Links

Another one about constructions. Though this isn't about how to actually do constructions (you might like my videos on that), it's a nice little set of questions to make specific constructions and then to check them electronically with this site. 
Curriculum Tags: All
https://www.transum.org/software/SW/Starter_of_the_day/Students/Constructions.asp

Mixed media learning (sounds good). Students complete construction exercises using a pencil, ruler and compasses, then measure a length on their construction. They type it online, which awards the mark if within a given tolerance. www.transum.org/Intro/?ID=403 #mathsresources #mathstoday

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— transum.bsky.social (@transum.bsky.social) July 3, 2026 at 5:57 AM

Video Links

I always appreciate unconventional methods of doing things. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://x.com/howie_hua/status/2072699932998340865

This fraction comparison strategy is underrated pic.twitter.com/94Kc9LZXvi

— Howie Hua (@howie_hua) July 2, 2026

Image Links

It took me many years (and a student to tell me) to realize I had to get to know my students. I wish I had known sooner. 
Curriculum Tags: All
https://bsky.app/profile/camatsumoto10.bsky.social/post/3mprge6pwec2z

@camatsumoto10.bsky.social

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— Carol Matsumoto (@camatsumoto10.bsky.social) July 3, 2026 at 4:50 PM

Math Links for Week Ending June 5th, 2026

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Perfect for adding vectors (or even you could connect it to adding integers). Either way, as someone who is a graduate of physics, this would be totally fun.
Curriculum Tags: MCV4U
https://x.com/ScienceExpand/status/2060936498481115603

The Crazy physics of launching at 80 km/h from a truck already moving 80km/h pic.twitter.com/wlhwfgUHo5

— Science Magazine (@ScienceExpand) May 31, 2026

Resource Links

Some self checking resources on Similar Triangles
Curriculum Tags: Gr7, Gr8, MTH1W
https://www.transum.org/Maths/Activity/Similar/Triangles/

A new set of self-marking exercises called Similar Triangles has been created. It builds on the practice already offered by the Similar Shapes exercise, exploring triangle similarity in more detail. www.transum.org/Intro/?ID=1175 #mathsresources #mathschat #mathstoday #mathchat

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— transum.bsky.social (@transum.bsky.social) June 5, 2026 at 5:57 AM

Video Links

You can never have enough ways to explain division with integers
Curriculum Tags: Gr7, Gr8, MTH1W
https://x.com/howie_hua/status/2061935439423177007

Here's how I would explain why a negative divided by a negative equals a positive to kids pic.twitter.com/HdNWw92xhG

— Howie Hua (@howie_hua) June 2, 2026

Image Links

I like this one because it could be used at any grade level
Curriculum Tags: All
https://bsky.app/profile/pwharris.bsky.social/post/3mnix7j42ck23

#TryThisThursday If one doesn't belong, how are the other three related? Do it for each quadrant! what the other three have in common! #MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

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— Pam Harris (@pwharris.bsky.social) June 4, 2026 at 9:08 PM

Math Links for Week Ending May 15th, 2026

Featured Links

This is a neat video from the staff of the  Harvard Math dept. 
Curriculum Tags: All
https://www.youtube.com/watch?v=VI5fUKPK2No

Resource Links

This looks interesting. This part of the description caught my eye "....This training will be useful for dyslexia assessors who want to assess for dyscalculia.."
Curriculum Tags: All
https://www.patoss-dyslexia.org/Live-Webinars/development-and-understanding-of-mathematical-skills-within-primary-and-secondary-education/16299?OccId=22276

Join us on Wednesday 20 May for a live CPD webinar with Alison Tallentire, exploring how mathematical skills develop across primary and secondary education. 👉 Book: www.patoss-dyslexia.org/Live-Webinar... #MathsEducation #Dyscalculia #SpLD #PrimaryMaths #SecondaryMaths #InclusivePractice

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— Patoss (@patoss-dyslexia.bsky.social) May 15, 2026 at 7:15 AM

Video Links

@Howie_Hua continues to do some Pokemon themed math, this time with combinatorics. 
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2055022858578055532

How many different teams of 6 Eeveelutions are there when there are 8 Eeveelutions? pic.twitter.com/VHkgPcXJll

— Howie Hua (@howie_hua) May 14, 2026

Image Links

Looking for a discussion prompt dealing with proper and improper fractions?
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/mathsvault.bsky.social/post/3mlvkad2u3v2h

Discuss — Add And Subtract Improper Fractions And Mixed Numbers #maths #mathsteacher #UKMathsChat #GCSEMaths #MathsChat #Discussion #MathsDiscussion #TalkTasks

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— Jon @ The Maths Vault (@mathsvault.bsky.social) May 15, 2026 at 10:30 AM

Math Links for Week Ending Apr 17, 2025

Featured Links

When I saw this show up in my Facebook feed, I thought for sure it had to be fake. But no, it's real
Curriculum Tags: All
https://www.calculator.org/calculators/Casio_QL-10.html

I saw this come across one of my feeds and I thought it was fake. But it turns out that in 1979, the #Casio "Calculighter" was legit www.calculator.org/calculators/... #MathChat #MTBoS #iTeachMath

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— DavidPetro314 (@davidpetro314.bsky.social) April 17, 2026 at 5:52 PM

Resource Links

The idea of sharing resources is the best reason to be in a space like this. The old Twitter Matheverse was great but it's getting better on Bluesky. Keep sharing, everyone
Curriculum Tags: MCR3U
https://bsky.app/profile/theericklee.bsky.social/post/3mjkzz76xd22e

Gave this warmup question to my class today. Students had to think carefully about the function and what x represents in each statement. Great discussions. @studymaths.bsky.social #ITeachMath #MathSky

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— Erick Lee (@theericklee.bsky.social) April 15, 2026 at 7:22 PM

Video Links

I'm not a fan of math "tricks" but I am a fan of anyone who can explain why they work
Curriculum Tags: Gr8, MTH1W
https://x.com/howie_hua/status/2044875275566268435

Visually showing why "keep change flip" works pic.twitter.com/EbxAUwr7F0

— Howie Hua (@howie_hua) April 16, 2026

Image Links

This is a good lesson in the Commutative Property of multiplication and also the idea of trying to do a similar problem that is easier but has the same answer. 
Curriculum Tags: Gr8, MTH1W
https://bsky.app/profile/pwharris.bsky.social/post/3mjnkqgjzwc2h

#TryThisThursday Try Would You Rather as such a great routine to get students thinking and sharing about mathematical relationships. Which is your favorite and why? #MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

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— Pam Harris (@pwharris.bsky.social) April 16, 2026 at 7:27 PM

Math Links for Week Ending Apr 3, 2026

Featured Links

I love this visual
Curriculum Tags: MCV4U
https://x.com/howie_hua/status/2038341287603282340

You can do this calculus problem with just any random book 😱 pic.twitter.com/LGndHMlJ81

— Howie Hua (@howie_hua) March 29, 2026

Resource Links

You can never have enough sources of resources
Curriculum Tags: All
https://www.resourceaholic.com/2026/04/5-maths-gems-197.html

New! My 197th gems post. Ideas, updates and resources for maths teachers. 💎 www.resourceaholic.com/2026/04/5-ma... #ukmathschat #mathstoday #alevelmaths

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— Jo Morgan (@mathsjem.bsky.social) April 3, 2026 at 6:40 AM

The latest classic NCTM calendar
Curriculum Tags: All
https://karendcampe.wordpress.com/2026/04/01/april-calendar-problems-4/

The April #ProblemSolving Calendar is posted & that's no fooling!!
Plus March solutions as well.
Share your working out & thoughts here or on the post. #iTeachMath #MTBoS #MathsToday#RecreationalMath #MathChathttps://t.co/yAZPMe109h

— Karen Campe (@KarenCampe) April 2, 2026

 

Video Links

People complain that things are worse now. The data says otherwise
Curriculum Tags: MDM4U
https://x.com/toddrjones/status/2039771217553461667

Here are some ways in which the world has gotten better. pic.twitter.com/v1Py5NtQ7L

— Todd Jones 🦊 (@toddrjones) April 2, 2026

Fibonacci to the party
Curriculum Tags: All
https://x.com/howie_hua/status/2039721193918648801

Let's learn about the golden ratio pic.twitter.com/iMnoH4d8Qd

— Howie Hua (@howie_hua) April 2, 2026

Image Links

Very nice prompt
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/mathsvault.bsky.social/post/3milwnnonl52w

Discuss — Factors of a number #maths #mathsteacher #UKMathsChat #GCSEMaths #MathsChat #Discussion #MathsDiscussion #TalkTasks #FactorsOfANumber

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— Jon @ The Maths Vault (@mathsvault.bsky.social) April 3, 2026 at 10:30 AM

Another nice prompt
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/tilefarmer.bsky.social/post/3mikm2thrvk26

#ElemMathChat Q7 “Last Tile Standing” is another one of my favorites (for Tile Farm’s version go to tiletalk.tilefarm.com). I’ve chosen one of the 24 patterns above, can you think of yes/no questions that could help eliminate options? Ask and I’ll answer yes/no. Can comment below if easier.

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— Alex Romero (@tilefarmer.bsky.social) April 2, 2026 at 9:48 PM

Math Links for Week Ending Feb 20th, 2026

Featured Links

This is an old video but still pretty cool
Curriculum Tags:All
https://www.youtube.com/watch?v=pg1NpMmPv48

#Mathsky youtube.com/watch?v=pg1N...

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— Pete Wung The Curious Polymath (@curiouspolymath.bsky.social) February 20, 2026 at 8:06 PM

Resource Links

I have always liked the idea of warmup questions. Something for kids to do as soon as they step in the door. Nothing too crazy, maybe with different levels of difficulty. And even though these examples are for Calculus, the idea is universal.
Curriculum Tags: MCV4U
https://bsky.app/profile/theericklee.bsky.social/post/3mfcymi3r3c2r

A few warm-up questions from this week in my high school Calculus class. I start each day with a question. Sometimes for review/retrieval, sometimes to launch the day's discussion and sometimes for practice/consolidation. #ITeachMath #MathsToday

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— Erick Lee (@theericklee.bsky.social) February 20, 2026 at 3:55 PM

Video Links

Both models are correct and necessary
Curriculum Tags: Gr7, Gr8
https://x.com/howie_hua/status/2024891678977655292

I know a lot of people think about 3 ÷ 1/2 as "how many 1/2 fit into 3?" but there is another model!

Here are two ways we can think about division. pic.twitter.com/k5WbJI0Wtv

— Howie Hua (@howie_hua) February 20, 2026

Image Links

Asking for questions is a good way to get more students involved. Especially for students that struggle and for students that excel, you can give them a specific topic. 
Curriculum Tags: All
https://bsky.app/profile/teacher2teacher.bsky.social/post/3mew3e35zia27

A change in perspective can make all the difference! T Kathy Minas (themathcollective on IG) mixes it up by giving the answer first – and asking learners for the question: www.instagram.com/p/DO1o9bSEmr9/ #MTBoS

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— Teacher2Teacher (@teacher2teacher.bsky.social) February 15, 2026 at 12:40 PM

Math Links for Week Ending Dec 26, 2025

Featured Links

Who doesn't want some free resources?
Curriculum Tags: All
https://www.mathisfigureoutable.com/blog/12-days-of-christmas-math-is-figureoutable

That’s a wrap! 🎄
12 days of FREE resources to help students reason instead of memorize strategies, routines, and a reasoning workshop.
Catch them all here 👉 https://t.co/KBlampybXr#MathIsFigureOutAble #MTBoS #MathEd pic.twitter.com/OnGWjOAkyS

— Pam Harris (@pwharris) December 20, 2025

Resource Links

These are some big names in mathematics communication
Curriculum Tags: All
https://www.ams.org/journals/notices/202601/noti3285/noti3285.html

Reaching the Masses: Six Authors on Public Outreach [about Mathematics]

A Zoom conversation with:

Keith Devlin @MarcusduSautoy
Jordan Ellenberg
Sarah Hart @JohnAllenPaulos@stevenstrogatzhttps://t.co/34Ihrzpu40

PDF: https://t.co/dXmPesT92u pic.twitter.com/1eoecjzFFW

— Steven Strogatz (@stevenstrogatz) December 18, 2025

Video Links

A proof using triangle properties. 
Curriculum Tags: Gr8, MTH1W
https://x.com/howie_hua/status/2001750457216307290

One of the coolest math facts that I know is that the only circle that fits perfectly in a 3-4-5 right triangle has an area of pi.

Here's how we can prove this. pic.twitter.com/heVZTZon9a

— Howie Hua (@howie_hua) December 18, 2025

Working with repeating decimals? Then this may be fun
Curriculum Tags: Gr8, MTH1W
https://x.com/howie_hua/status/2002773397823201310

Can we all share a fun math fact we will never use in our life but we still think is cool? pic.twitter.com/DRMOFBugGP

— Howie Hua (@howie_hua) December 21, 2025

I love the connection to e. 
Curriculum Tags: MDM4U, MHF4U

https://x.com/howie_hua/status/2003510194555486736

What's the probability of no one grabbing their own name when picking secret Santas? (Spoiler alert: e appears here!) pic.twitter.com/kacvsy9vgb

— Howie Hua (@howie_hua) December 23, 2025

Image Links

A great class starter
Curriculum Tags: All
https://x.com/pickover/status/2001855140027077025

Mathematics. Perception. Geometry.

This problem is fascinating, because different humans seem to give different answers, and different AI entities seem to give different answers. pic.twitter.com/RJnXP9H4bO

— Cliff Pickover (@pickover) December 19, 2025

There is data everywhere
Curriculum Tags: MDM4U
https://x.com/YOW_Weather/status/2004169734636372053

#Ottawa white Christmases over the past 50 years (2025 edition) #YowWx #OttWeather #OttNews pic.twitter.com/5ROkB26pQo

— Ottawa Weather Records🌤 (@YOW_Weather) December 25, 2025

As someone who is over 55, I am not sure if I agree :-)
Curriculum Tags: MDM4U
https://x.com/SavagelyAvg/status/2004234582057796015

pic.twitter.com/0dXgAiD2zB

— SAVAGELY Average 🇺🇸 ✝ (@SavagelyAvg) December 25, 2025

Math Links for Week Ending Dec 19th, 2025

Featured Links

Who among us have no seen math students do this on the regular in class?
Curriculum Tags: All
https://x.com/mariana057/status/2001374920073449837

I don't always clear my calculator...

but when I do, I hit both 'C' and 'CE' a bunch of times because I don't know exactly what they do.

— mariana Z (@mariana057) December 17, 2025

Resource Links

Whether you are actually studying sums of series or just having students work with number patterns, this is a good way to go about it. 
Curriculum Tags: MTH1W, MCR3U
https://fawnnguyen.substack.com/p/find-the-smallest-sum





Flex you or your student's @Desmos muscles 
Curriculum Tags: All
https://bsky.app/profile/desmos.com/post/3maen3ia6ak27

Have some free time over the next couple weeks? You have less than a month to submit your work to the Desmos Art Contest! Head to desmos.com/art for more information, and be sure to hit submit before January 15th, 2026. #mathsky #iteachmath

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— Desmos Studio (@desmos.com) December 19, 2025 at 4:28 PM

Video Links

Some nice trig related visuals
Curriculum Tags: MCR3U, MCF3M
https://x.com/InterestingSTEM/status/2000944015404056826

Trigonometric patterns explained.pic.twitter.com/eF4JBwh86J

— Interesting STEM (@InterestingSTEM) December 16, 2025

I like how in this question you could use systems of equations but you could also use logic
Curriculum Tags: MPM2D, MFM2P
https://x.com/howie_hua/status/1999526011814211709

What is the weight of the dog, cat, and bunny? pic.twitter.com/1dcYFlZDKa

— Howie Hua (@howie_hua) December 12, 2025

This is a good example of poor knowledge of percents. What would you say to a student who has this misconception.

Curriculum Tags: Gr7, Gr8, MTH1W

https://bsky.app/profile/bobsonwong.com/post/3madl47uyz22l

Bad math #MTBoS #ITeachMath

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— Bobson Wong (@bobsonwong.com) December 19, 2025 at 6:20 AM

Image Links

Cosine on a Bovine
Curriculum Tags: MPM2D, MCR3U, MCF3M, MHF4U
https://x.com/howie_hua/status/2001449294176592049

You've heard of elf on the shelf but have you heard of pic.twitter.com/Iy4IG03Zs2

— Howie Hua (@howie_hua) December 18, 2025

I have a z-mas tree at my house :-)
Curriculum Tags: MCR3U
https://x.com/Anthony_Bonato/status/2001279107871457399

As a mathematician, I must post this every Christmas season. I don't make the rules pic.twitter.com/jmaKTUzXcu

— Anthony Bonato (@Anthony_Bonato) December 17, 2025

Sometimes the nature of math is amazing
Curriculum Tags: All
https://x.com/pickover/status/1999494678501294412

Mathematics and mystery.

Shiver in ecstasy. The circle that fits precisely inside a 3-4-5 Pythagorean triangle has an area of π. OMG. pic.twitter.com/QtpYmwiiAE

— Cliff Pickover (@pickover) December 12, 2025

Classic factorial humour
Curriculum Tags: MDM4U
https://x.com/pickover/status/2000676079514567060

This is a math joke.
(Meme circulating widely on the Web.) pic.twitter.com/pSewCXvwnv

— Cliff Pickover (@pickover) December 15, 2025

Math Links for Week Ending Nov 14th, 2025

Featured Links

Years ago I wrote about using Plickers (here) and so it was neat to see it come up. It's an almost no-tech way to do instant surveys in class.
Curriculum Tags: All
https://wecdsbit.blogspot.com/2014/11/plickers-free-clicker-app-with-almost.html

I wrote a blog post about Plickers over 10 years ago. Thanks for the reminder: wecdsbit.blogspot.com/2014/11/plic...

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— DavidPetro314 (@davidpetro314.bsky.social) November 8, 2025 at 8:52 AM

Resource Links

I love a good and practical combinatorics problem
Curriculum Tags: MDM4U
https://robertkaplinsky.com/work/how-many-soda-combinations-are-there-on-a-coke-freestyle/

Coke Freestyle machines allow you to take soft drinks and add up to 14 flavors to them. What strategies might your students use to determine how many soda combinations there are on a Coca-Cola Freestyle? robertkaplinsky.com/work/ho...

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— Robert Kaplinsky (@robertkaplinsky.com) November 5, 2025 at 6:14 PM

Video Links

The normal distribution as performance art
Curriculum Tags: MDM4U
https://x.com/Rainmaker1973/status/1988846789542441288

You can literally see the normal distribution pic.twitter.com/WdHpAD3TCE

— Massimo (@Rainmaker1973) November 13, 2025

A good starter for your class when talking about numbers or patterns
Curriculum Tags; Gr7, Gr8, MTH1W
https://x.com/howie_hua/status/1988740091372871929

Can you find 1,000 in this grid?

This is one of my favorite mathematical tasks that I give to students. pic.twitter.com/roNjuEnEE9

— Howie Hua (@howie_hua) November 12, 2025

I have always liked this falacy
Curriculum Tags: All
https://x.com/howie_hua/status/1987539561405428139

Why can't we just say 0/0=1?

I showed one way why this would break math. What's another way? pic.twitter.com/ctsm28fBjm

— Howie Hua (@howie_hua) November 9, 2025

Image Links

Who doesn't love a taxicab number?
Curriculum Tags:All
https://x.com/PhysInHistory/status/1988616819977154726

You are a math geek if you know what this number is ✍️ pic.twitter.com/LXcEMPFCql

— Physics In History (@PhysInHistory) November 12, 2025

Math Links for Week Ending Nov 7th, 2025

Featured Links

I have definitely experienced frustration from students when I don't answer their questions directly "Sir, when are you actually going to teach us?".
Curriculum Tags: All
https://robertkaplinsky.com/one-way-get-students-persevere/

Do your students ever get frustrated when you don't help them as much as they'd like? Here's what I tell them to appreciate what I'm doing for them.https://t.co/mewWggLbTM pic.twitter.com/dVywtjKL8T

— Robert Kaplinsky (@robertkaplinsky) November 3, 2025

Resource Links

Some classic NCTM calendar problems
Curriculum Tags: All
https://karendcampe.wordpress.com/2025/11/01/november-calendar-problems-3/

November is here, and so is the next Calendar of problems! Enjoy these with your students or for yourself, share your thinking here or on the post. #MTBoS #iTeachMath #T3Learns #MathSky #RecreationalMath #MathsToday karendcampe.wordpress.com/2025/11/01/n...

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— Karen Campe (@karencampe.bsky.social) November 1, 2025 at 8:19 AM

Video/Audio Links

The latest OAMEtalks podcast
Curriculum Tags: All
https://talks.oame.on.ca/season-8

[New Podcast] This episode features Stacey Jacobs previewing their Nov 12th @oamecounts.bsky.social members only webinar "Empowering Math Learners: Executive Function Strategies to Support Math Learning". More info: talks.oame.on.ca/season-8 #MathChat #MTBoS #iTeachMath

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— DavidPetro314 (@davidpetro314.bsky.social) November 3, 2025 at 11:01 PM

Math class is not a race
Curriculum Tags: Gr7, Gr8, MTH1W

https://x.com/howie_hua/status/1984623920608395686

Hot take but I always see videos of the butterfly method go viral but I would *never* teach this method and here's why. pic.twitter.com/hJplB1Tzu4

— Howie Hua (@howie_hua) November 1, 2025

Image Links

There is data about everything :-)
Curriculum Tags: MDM4U
https://bsky.app/profile/infobeautiful.bsky.social/post/3m4yr7lqxot2p

Dude, bro, buddy, fella by Quartz @qz qz.com/316906/the-d...

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— Information is Beautiful (@infobeautiful.bsky.social) November 6, 2025 at 6:55 PM

Math Links for Week Ending Oct 31st, 2025

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I always appreciate @BenOrlin's dry humour and mathematical prowess. In this case he suggests the 10 best triangles of the 2st century 
Curriculum tags: All
https://mathwithbaddrawings.com/2025/10/14/10-best-triangles-of-the-21st-century-so-far/

Resource Links

Just a bit of math and poetry with this blog
Curriculum Tags: All
https://poetrywithmathematics.blogspot.com/2025/10/can-math-be-funny.html

Video Links

This could be a great application of integers
Curriculum Tags: Gr7, Gr8, MTH1W
https://x.com/howie_hua/status/1983300047069688334

Did you know you can subtract left to right? 😱 pic.twitter.com/DkOE27dnHM

— Howie Hua (@howie_hua) October 28, 2025

Image Links

Classic math joke for Halloween
Curriculum Tags: All
https://x.com/howie_hua/status/1982895725953593773

Wear this on Halloween to scare your math teachers pic.twitter.com/J5Oud4QgPx

— Howie Hua (@howie_hua) October 27, 2025

Math Links for Week Ending Oct 10th, 2025

Featured Links

I know that there have been many secondary teachers waiting for this set of problems. Here's a sample
Curriculum Tags: All
https://x.com/pgliljedahl/status/1976088834212515884

Here's a sneak peek to Task 30: Graphing Linear Equations! https://t.co/gJhlhhJwnb

— Peter Liljedahl (@pgliljedahl) October 9, 2025

Resource Links

The Visual Patterns website has been around for a while but 500 patterns is still impressive
Curriculum Tags: All
https://x.com/fawnpnguyen/status/1975287062980141411

We now officially have 500 visual patterns! 🎉

Christophe from France just shared SIX wonderful building-brick patterns he discovered while playing with his daughter. 💕

Check out visual patterns #495-500: https://t.co/hobByX78Su pic.twitter.com/drwRrFh7Ki

— Fawn Nguyen (@fawnpnguyen) October 6, 2025

Video Links

If your students are learning about squares of numbers, this might be the kernel for an interesting activity about creating any odd number with the difference of squares
Curriculum Tags: Gr8, MTH1W
https://x.com/howie_hua/status/1975570637109518668

Fun mental math trick: All odd numbers can be written as the difference of two consecutive square numbers. Here's how we can do this mentally. pic.twitter.com/MDeJ5vnbxj

— Howie Hua (@howie_hua) October 7, 2025

Is he right? Have your students test it out
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/1976032229643141302

Don't roast me if I am wrong but I THINK I found a new way of finding the harmonic mean???

I couldn't find any source explaining it like this, but even if it isn't new, I think it's a good way of explaining what the harmonic mean wants. pic.twitter.com/K2kMWGbirg

— Howie Hua (@howie_hua) October 8, 2025

Image Links

Math is everywhere
Curriculum Tags: MCV4U
https://x.com/pickover/status/1973775091617153511

Mathematics. Tattoos. (Image circulating widely on the Web.) pic.twitter.com/qmDHStoy6I

— Cliff Pickover (@pickover) October 2, 2025

I have always liked this fallacy based on dividing by zero
Curriculum Tags: All
https://x.com/pickover/status/1976105777799770232

Mathematics.

At bottom, we conclude that "2 = 1". pic.twitter.com/aEEkKWL8Hw

— Cliff Pickover (@pickover) October 9, 2025

Math Links for Week Ending Sept 12, 2025

Featured Links

This is a super fun prompt. My first saved graph was from May 2, 2012
Curriculum Tags: All

https://bsky.app/profile/mrcorleymath.bsky.social/post/3lyks7kcmek2a

This could be fun! Inspired by Jed's post, find your OLDEST saved graph in @desmos.com and share it! #mtbos #iteachmath

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— Nick Corley (@mrcorleymath.bsky.social) September 11, 2025 at 8:54 AM

Resource Links

I never say no to new stats resources
Curriculum Tags: MDM4U
https://mathsweek.scot/schools/learning-resources/stats-in-the-wild

We would love to hear your thoughts on our new set of maths teaching resources, developed in partnership with @mathsweek.scot Please share widely! #ITeachMaths #ITeachMath #MTBoS @scotstemambassador.bsky.social @royalstatsoc.bsky.social

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— Darren Macey (@darrenmacey.bsky.social) September 11, 2025 at 2:37 PM

I like to use the word "tinker" but @NatBanting talks about the nature of playing with a problem
Curriculum Tags: All

https://natbanting.com/play-with-your-problems/

I wrote a new post yesterday: natbanting.com/play-with-yo... It’s about the benefits of teachers tinkering with the problems/prompts we offer students. (And, tangentially, about the benefits of conference spaces where we are given license to do so) #iteachmath

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— Nat Banting (@natbanting.bsky.social) September 11, 2025 at 8:22 AM

Video Links

A nice strategy for comparing fractions
Curriculum Tags: Gr7, Gr8, MTH1W
https://x.com/howie_hua/status/1965934153943363706

Fraction comparison strategy: Same parts away from the whole pic.twitter.com/747SUsx9Tw

— Howie Hua (@howie_hua) September 11, 2025

Image Links

Fun with tiling
Curriculum Tags: All
https://bsky.app/profile/maria-naturalmath.bsky.social/post/3lxkzkilwmk2y

Organic-looking curves made out of simple polygons? My jam! #iTeachMath #MathSky

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— Maria D. at Natural Math (@maria-naturalmath.bsky.social) August 29, 2025 at 5:41 PM

Math Links for Week Ending Sept. 5th, 2025

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We are starting our 8th season of OAMEtalks. Webinars for our OAME members but the first one is always free. That's Jamie Mitchell talking about Hacking Assessment with AI. Register now for the webinar on Sept 10th and listen to the podcast preview now. 
Curriculum Tags: All
https://talks.oame.on.ca/season-8

Season 8 of @OAMEcounts OAMEtalks is live at https://t.co/0Tk5NbHctV

This season has speakers from #OAME2025https://t.co/FNER2hKfFF featuring@realJ_Mitchell Chad Harris @TheMathGuru @mrsstaceyj @CharalSonya @rosemortillaro @MsNicolePeckham #MathChat #MTBoS #iTeachMath pic.twitter.com/atSH5vD3u8

— OAMEtalks (@OAMEtalks) September 1, 2025

[New Podcast] This episode features @realJ_Mitchell
previewing their Sept 10th @OAMEcounts free webinar "Hacking Assessment in the AI Age". More info:https://t.co/FNER2hKfFF #mathchat #MTBoS #iTeachMath pic.twitter.com/bXXRMjSysU

— OAMEtalks (@OAMEtalks) September 3, 2025

Resource Links

@MathyCathy gives us some sobering thoughts and advice about the recent change from Desmos to Amplify 
Curriculum Tags: All
https://www.mathycathy.com/blog/2025/08/amplify-classroom-%E2%89%A0-desmos-classroom/

Are you a teacher planning to use @Amplify Classroom with students during SY 25-26?
Here's some advice to consider! #iteachmath
Amplify Classroom ≠ Desmos Classroom https://t.co/ApMoYxHcNv

— Cathy Yenca (@mathycathy) August 16, 2025

Video Links

This makes the dividing algorithm make sense 
Curriculum Tags: All
https://x.com/howie_hua/status/1963011782483787947

How do we do this "new" way of dividing? pic.twitter.com/wGsv6Fg0O1

— Howie Hua (@howie_hua) September 2, 2025

I never shy away a visual for multiplication
Curriculum Tags: Gr7
https://x.com/howie_hua/status/1962184847277068773

If you want to be better with multiplication, think about rectangles. Here's what I mean: pic.twitter.com/ubpmQt6Hql

— Howie Hua (@howie_hua) August 31, 2025

Image Links

A nice simple relationship that seems too good to be true
Curriculum Tags: Gr7, Gr8
https://x.com/abakcus/status/1963704620162920862

Three squares on the left, two on the right.
Perfect balance. ⚖️

10² + 11² + 12² = 13² + 14² pic.twitter.com/fHktRDbdPF

— Abakcus (@abakcus) September 4, 2025

Math Links for Week Ending Aug 29, 2025

Featured Links

Some resources for teachers in the GTA but this list is useful for any teacher
Curriculum Tags; All
https://bsky.app/profile/calarmstrong.bsky.social/post/3lxf6z4dxbc2v
https://bsky.app/profile/calarmstrong.bsky.social/post/3lxf5whojwc2v

"Teacher as artisan" @ "Count Me In" from @UofTMath #onted #mtbos HT @OAMElearns #mathed

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— Cal Armstrong (@calarmstrong.bsky.social) August 27, 2025 at 10:02 AM

#onted #mtbos folks Lots of options for outreach from @UofT Math Dept. Check out ways for you and your students to grow! HT @OAMElearns #mathed

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— Cal Armstrong (@calarmstrong.bsky.social) August 27, 2025 at 9:43 AM

Resource Links

Having students actually write about topics in math class can be useful
Curriculum Tags: All
https://www.edutopia.org/article/short-writing-task-elementary-math

Check out 3 focused writing activities that can help students build confidence in their math skills *and* bond with their classmates! 👀 #MathSky #ITeachMath #ElementaryTeacher #EduSky

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— Edutopia (@edutopia.org) August 29, 2025 at 7:37 AM

Video Links

Mathematical dates are always fun
Curriculum Tags: Gr8, MTH1W, MFM2P, MPM2D
https://x.com/howie_hua/status/1960814706639454458

We are a month away from one of the coolest mathematical dates of our lifetime! pic.twitter.com/HEGHBwGomC

— Howie Hua (@howie_hua) August 27, 2025

Image Links

Every math teacher needs this cup
Curriculum Tags: All
https://bsky.app/profile/lindsaykittens.bsky.social/post/3lx3tku6nes2z

I’m making the change from primary teaching to secondary maths. Any recommendations of maths teachers to follow would be welcome. Thank you. #maths #newdirection

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— Lindsay Kittens (@lindsaykittens.bsky.social) August 23, 2025 at 4:44 PM

Math Links for Week Ending July 25th, 2025

Featured Links

It's the last week of #MathPhoto25
Curriculum Tags: All
https://bsky.app/profile/theericklee.bsky.social/post/3luqgd3xjyk2b

All eight weeks of #MathPHoto25. Feel free to continue posting through the summer with any of the prompts (or combinations of prompts) you notice!

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— Erick Lee (@theericklee.bsky.social) July 24, 2025 at 4:59 PM

Resource Links

I think this would be a great way to introduce permutations
Curriculum Tags: MDM4U
https://bsky.app/profile/mathnerd1729.bsky.social/post/3lul6irptj22z

A spooky calculation I thought of 🧮 1. Choose four distinct single digits. 2. Form all three-digit numbers possible using three distinct digits from those you picked 3. Divide the sum of the three-digit numbers found by the sum of the four distinct digits. You'll always get 666, but why? #MathSky

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— Math Nerd 1729 (@mathnerd1729.bsky.social) July 22, 2025 at 2:54 PM

Video Links

I love visualizing things that we often leave to algorithms
Curriculum Tags: Gr8, MTH1W
https://x.com/howie_hua/status/1948064017182015762

Can you visualize fraction division on the number line? If not, give me around 90 seconds to explain it. pic.twitter.com/76BYRtU9DE

— Howie Hua (@howie_hua) July 23, 2025

It is always cool to see these animations because they are counter intuitive
Curriculum Tags: MCR3U
https://x.com/mathladyhazel/status/1947716757872898371

These trigonometric functions are so satisfying. [https://t.co/OMtZF8tOja] pic.twitter.com/dhBD2wA5WS

— Math Lady Hazel 🇦🇷 (@mathladyhazel) July 22, 2025

Image Links

Math humour for the inverse trig fans
Curriculum Tags: All
https://x.com/howie_hua/status/1947680988760576220

...Oh, I thought I read sec(c). https://t.co/EyEJ8neolV pic.twitter.com/1JKTZCC7uY

— Howie Hua (@howie_hua) July 22, 2025

I'm not sure if "hilarious" is correct but, yes, I would totally make this joke in class :-)
Curriculum Tags: MDM4U
https://x.com/mathladyhazel/status/1947379949268074811

This math joke is hilarious! pic.twitter.com/dYN9cthq5U

— Math Lady Hazel 🇦🇷 (@mathladyhazel) July 21, 2025

Math Links for Week Ending Jul 11th, 2025

Featured Links

I love when people post videos like this that, to the untrained eye, do not seem like they are math related but in this case, it's a perfect video that is both quirky and can be related to rates of change. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/malmeida.bsky.social/post/3lsvylgzogs2i

New unit rate context just dropped #MTBOS #ITeachMath

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— Marco (@malmeida.bsky.social) July 1, 2025 at 11:17 AM

Resource Links

It seems like @mathequalslove is an endless supplier of great math resources. Thanks
Curriculum Tags: MTH1W
https://bsky.app/profile/mathequalslove.bsky.social/post/3ltnalupl3c2p

Rational Exponents Bingo Game for Algebra 2/Precalculus (And just pretend the word equation actually says expression. That's what I get for copying and pasting...) mathequalslove.net/rational-exp... #mtbos #iteachmath #puzzlingclassroom #mathsky #edusky

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— Sarah Carter (@mathequalslove.bsky.social) July 10, 2025 at 5:11 PM

Video Links

The math is relatively simple but the error checking of credit cards is pretty quick because of it. 
Curriculum Tags: All
https://x.com/howie_hua/status/1943299871957524906

Here is my credit card number. First come, first serve. pic.twitter.com/FsdzpzzOZr

— Howie Hua (@howie_hua) July 10, 2025

Image Links

This week's topic is up
Curriculum Tags: All
https://bsky.app/profile/theericklee.bsky.social/post/3ltmwkvwksk26

Week 6 of #MathPhoto25 is is underway! Where do you see measurements or tools used to #measure. Think measurements for distance, area, weight, time, etc. #ITeachMath

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— Erick Lee (@theericklee.bsky.social) July 10, 2025 at 2:12 PM