Math Links for Week Ending July 3rd, 2026

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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

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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 19, 2026

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I have mixed feelings about timed tests, but they can be useful for motivated students. Regardless I love this interface with the duelling timers and all the options you can use for the questions themselves. And there is not just math but biology, physics, chemistry, computer science and even english.
Curriculum Tags: All
https://classduels.com/

Here's something I've been working quite hard on recently: classduels.com/maths/ A Maths game featuring: - two-player (split screen, can be done on a interactive whiteboard) and single-player modes - 50+ topics across KS3-KS5 - a version for the Australian curriculum: classduels.com/maths/au/ 😉

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— Nathan Day (@nathanday.bsky.social) May 17, 2026 at 3:41 PM

Resource Links

Patterns? Of course it does
Curriculum Tags: All
https://studyfinds.com/van-goghs-brushstrokes-may-have-math-fingerprint/

studyfinds.com/van-goghs-br... Strokes of Genius: Van Gogh’s Paintings May Have a Mathematical Fingerprint #Math #Maths #MathSky #iteachmath #VanGogh #fractaldimension

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— Dawn Del Vecchio (@dawndelvecchio.bsky.social) June 18, 2026 at 1:42 PM

Lots of great problems, now available for free. Thanks to @EliLuberoff for pointing this out.
Curriculum Tags: All
https://www.citizenmath.com/

Video Links

Pokemon and expected value
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2067976421369368898

Which Pokémon move will do more damage per turn on average: Flamethrower or Fire Blast? Let's learn about expected value. pic.twitter.com/YzTxkYyGT2

— Howie Hua (@howie_hua) June 19, 2026

Image Links

Something to use in an exponential lesson about extrapolation
Curriculum Tags: MCR3U, MHF4H
https://bsky.app/profile/xkcd.com/post/3moj6x2c3fk2x

Messi xkcd.com/3260/

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— Randall Munroe (@xkcd.com) June 17, 2026 at 4:51 PM

Great for working with roots and simplifying 
Curriculum Tags: MTH1W, MPM2D
https://bsky.app/profile/percybuttons3.bsky.social/post/3mok5mpmbp222

Math Links for Week Ending June 12, 2026

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I agree. The community on Twitter was great. It was some of the best self directed PD I had experienced. Plus I "met" so many new like minded people (sometimes even in person). It is unfortunate that that platform waned in that capacity. I still post there and look from time to time but I love how the community on Bluesky, although small, is starting to fill that hole. 
Curriculum Tags: All
https://bsky.app/profile/mathowitz.bsky.social/post/3mo433ox6222j

Why am I on Bluesky? Because we used to have #mtbos on twitter. Then Twitter turned into X which turned into a steaming pile of vitriol... and I had to leave. A decent amount of us landed here, and even though it's not the same, it's better than nothing.

— Carl (@mathowitz.bsky.social) June 12, 2026 at 11:38 AM

The #math community seems to be growing here and becoming more active. I have presented on how to get the most of being in a community like this many times and here are my tips to grow this PLN and make it useful for educators. Bonus Tip - Use the Feeds: #MathChat #MTBoS #iTeachMath #MathSky

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— DavidPetro314 (@davidpetro314.bsky.social) November 23, 2024 at 7:32 PM

Resource Links

Somehow I missed the May "classic" NCTM calendar.
Curriculum Tags: All
https://karendcampe.wordpress.com/2026/05/01/may-calendar-problems-4/

The May #ProblemSolving Calendar is here! Solve yourself or w/your students & share your working-out thoughts here or on the blog.

*special theme* -- Function Composition #Algebra2 #precalculus#iTeachMath #MTBoS #T3Learns #RecreationalMath #MathsTodayhttps://t.co/Z5IhEWoDqP

— Karen Campe (@KarenCampe) May 1, 2026

I think we are going to start seeing a lot of people sharing their @DesmosStudio Notebook pages now that they are available to be created. 
Curriculum Tags: MTH1W
https://www.desmos.com/notebook/syajf6ddqw/view

Here's a #Desmos notebook I made to support one of my Algebra 2 lessons next September. I think these will be really useful as "digital manipulatives" that students can play with to build intuition. #EduSky #ITeachMath www.desmos.com/notebook/sya...

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— Darth Calculus 🏳️‍🌈 (@darthcalculus.bsky.social) June 11, 2026 at 8:52 AM

Video Links

I think this would be a good starter as a catalyst to talk about sums of series.
Curriculum Tags: MCR3U
https://x.com/howie_hua/status/2065493735132086507

You are not going to believe what (1²+2²+3²+...+100²)/(1+2+3+...+100) simplifies to... pic.twitter.com/N59mlCaU5Y

— Howie Hua (@howie_hua) June 12, 2026

Image Links

Here is a fun little puzzle when your students are starting to learn algebra.
Curriculum Tags: MTH1W, Gr8
https://bsky.app/profile/pwharris.bsky.social/post/3mo2fvrkhdk2z

#TryThisThursday It's factor puzzle time! The one on the left shows the relationships to apply to the one on the right. What goes in the blanks? How do you know? #MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

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— Pam Harris (@pwharris.bsky.social) June 11, 2026 at 7:46 PM

Introducing or reviewing Function notation? This might be a good puzzle
Curriculum Tags: MCR3U, MCF3M
https://bsky.app/profile/mathsadvance.bsky.social/post/3mo5xdr2x3k2d

How long to solve? Given that f(x) is linear (ax + b) express 'b' in terms of 'a'. #MathSky #MathsToday #ProblemSolving

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— Maths Advance (@mathsadvance.bsky.social) June 13, 2026 at 5:36 AM

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

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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 29th, 2026

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A couple of links to help students with exceptionalities. 
Curriculum Tags: All
https://autismspectrumnews.org/beyond-barriers-making-mathematics-accessible-for-autistic-students/
https://www.edutopia.org/article/supporting-neurodivergent-students-math

Hands-on math strategies can help autistic students build confidence, problem-solving skills, and greater independence. #Autism #MathEducation #SpecialEducation #Neurodiversity 📰 Read the article: https://autismspectrumnews.org/beyond-barriers-making-mathematics-accessible-for-autistic-students/

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— Autism Spectrum News (@autismspectrumnews.bsky.social) May 27, 2026 at 1:01 PM

These 5 instructional strategies can help you create a more supportive math classroom experience for neurodivergent learners! ✖️➕ #MathSky #ITeachMath #EduSky

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— Edutopia (@edutopia.org) May 28, 2026 at 7:39 PM

Resource Links

Need some Frustrum practice and resources? Look no further
Curriculum Tags: MTH1W
https://www.transum.org/Maths/Exercise/Frustum/

Well every day is a school day! It was while preparing this online exercise on frustums that I learned that there is more than one formula or method that can be used to find the volume. I live and learn. www.transum.org/Intro/?ID=1172 #mathsresources #mathschat #mathstoday #mathchat

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— transum.bsky.social (@transum.bsky.social) May 28, 2026 at 5:57 AM

Video Links

Last week @DesmosStudio introduced Desmos Notebook. Here's a brief mini tutorial on adding an existing graph.
Curriculum Tags: All
https://bsky.app/profile/desmos.com/post/3mmz67vks6s2j

Have you checked out Desmos Notebook yet? Importing your favorite Desmos graphs into Notebook is a great way to get started. What question should we answer next? #mathsky #iteachmath #iteachphysics

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— Desmos Studio (@desmos.com) May 29, 2026 at 2:30 PM

Those are like Peewee Herman cards :-)
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2060125131226361994 

I have two shuffled 52 card decks. If I reveal one card from each deck at the same time and I exhaust the decks, what's the probability of flipping the same exact card at least once? pic.twitter.com/coh3c8fLNK

— Howie Hua (@howie_hua) May 28, 2026

I love how the straight line motion produces the circular motion
Curriculum Tags: All
https://x.com/Rainmaker1973/status/2060403934246670336 

Each sphere is moving in a straight line, but the final motion is circularpic.twitter.com/nK4GjYXlZm

— Massimo (@Rainmaker1973) May 29, 2026

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I'm glad someone else was able to figure out what it was saying, cuz I couldn't
Curriculum Tags: MTH1W
https://bsky.app/profile/segarrogers.bsky.social/post/3mmwfpnfm7c2t

So I'm reading about the origins of algebra ... and I find this from Abū Kāmil in about 900CE ... and of course Kāmil's algebra (al-jabr!) could solve this. Pretty amazing really. #UKMathsChat #iTeachMath

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— Segar Rogers (@segarrogers.bsky.social) May 28, 2026 at 12:07 PM

Math Links for Week Ending May 15th, 2026

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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

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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 May 1, 2026

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It is OAME2026 our annual Ontario Association for Mathematics Education annual conference. I presented 3 sessions this year. They can all be accessed at the link below
Curriculum Tags: All
http://bit.ly/oame-petro

I just finished My session on resources for teaching #quadratics in #math class at the @OAMElearns #OAME2026 conference. You can get the slides here:https://t.co/indBLptcoZ#MathChat #iTeachMath #MTBoS pic.twitter.com/noUx1lXUh4

— David Petro (@davidpetro314) April 30, 2026

My second session was about how to build @Amplify classroom tasks (without CL) at the @OAMElearns #OAME2026 conference:https://t.co/indBLptcoZ#MathChat #MTBoS #iTeachMath pic.twitter.com/I9cD8wqlsj

— David Petro (@davidpetro314) May 1, 2026

My third session was showing gr 7&8 #math teachers all the great premade @Amplify classroom tasks at the@OAMElearns #OAME2026 conference: https://t.co/indBLptcoZ #MathChat #MTBoS #iTeachMath pic.twitter.com/bIeHk820Cy

— David Petro (@davidpetro314) May 1, 2026

Resource Links

OAME - Great culminating activity for gr 9 math 
Curriculum Tags: MTH1W
https://drive.google.com/drive/folders/11Ofdgs5nGW4MITiB4ybyiIbuCD7DSKz4

Modelling #math by creating a Food Truck from Elysabeth Barnes at @OAMElearns #OAME2026 for grade 9 MTH1W. Get the folder of resources here:https://t.co/U3DBXYmbXY#MathChat #MTBoS #iTeachMath pic.twitter.com/IutecPjiHx

— David Petro (@davidpetro314) April 30, 2026

OAME - A great reminder of how important starters are. 
Curriculum Tags: All
https://docs.google.com/presentation/d/17wmTZGoxa-F-TU51b-uICcMzMn1Ksv5IKyWgn_odZ14/edit?slide=id.p#slide=id.p

It's @theericklee at #OAME2026 coming from the east coast to talk about the power of the first 5 min of class. With references to lots of #math class favs & including other curated math resources, check them all out here:https://t.co/OIKhSka87Y#MathChat #MTBoS #iTeachMath pic.twitter.com/cawZJxgcGi

— David Petro (@davidpetro314) April 30, 2026

OAME - Ideas that exploit AI for useful purposes in math class
Curriculum Tags: All
https://docs.google.com/presentation/d/1n-FZXTKSv6E4pG-VSgmJ0DDG8Y0qwCpT1VOFJvMwIeg/edit

Getting tips on using Google's Gemini Suite in #math class from @robinmath3 at the @oamelearns #OAME2026 conference.https://t.co/N0CSQwIVwP#MathChat #MTBoS #iTeachMath pic.twitter.com/N1zNJ5X7fo

— David Petro (@davidpetro314) April 30, 2026

OAME - Sound advice from Dr. Pam Seda
Curriculum Tags: All
http://tinyurl.com/SedaMay1

Lot's of great equity based resources shared by Dr. Pam Seda at the @OAMElearns #OAME2026 Conference Day 2 Keynotehttps://t.co/7hWJ5jVRLj#MathChat #MTBoS #iTeachMath pic.twitter.com/L6jMZ5ZRrj

— David Petro (@davidpetro314) May 1, 2026

OAME - Great session on how to turn regular rich problems into something better (and useful in a Thinking Classroom)
Curriculum Tags: All
https://www.kylewebb.ca/oame26

Great session from @webbkyle & @KirstDy on how to remix an already rich problem at the @OAMElearns #OAME2026 conference. They also shared some great problem solving resources:https://t.co/MCjVL2kWDe#MathChat #MTBoS #iTeachMath pic.twitter.com/am5ZHi0mjM

— David Petro (@davidpetro314) May 1, 2026

OAME - Free resources from @PWHarris
Curriculum Tags: All
 https://www.mathisfigureoutable.com/big

Free resource from @pwharris on numeracy strategies https://t.co/6vYAYMDn0k#OAME2026 pic.twitter.com/KY2FtUP2In

— David Petro (@davidpetro314) April 30, 2026

Video Links

A nice simple visualization of this classic probability problem. 

Curriculum Tags: All
https://x.com/howie_hua/status/2048452433895129532

This is a very common misconception in statistics:

If 1% of a population has a disease and the tests have a 5% chance of giving a false positive, what's the probability of having the disease given that we tested positive?

The answer is NOT 95%. It's actually way less. pic.twitter.com/HoLm7zOTjB

— Howie Hua (@howie_hua) April 26, 2026

More Pokemon probabilities
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2049585872966996285

If there is a 1/4096 shiny encounter rate, how many encounters do we need to have a 99% chance of encountering a shiny Pokémon? pic.twitter.com/z3PFlBZC4m

— Howie Hua (@howie_hua) April 29, 2026

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OAME - Great stuff from @PWHarris
Curriculum Tags: All
https://x.com/davidpetro314/status/2049841170008678512

"My job as an educator is to build kids brains, not to have them get answers to math questions" - @pwharris is the opening keynote at the @OAMEcounts #OAME2026 annual conference pic.twitter.com/ceG2En8q55

— David Petro (@davidpetro314) April 30, 2026

OAME - That's definitely the reason
Curriculum Tags: All
https://x.com/davidpetro314/status/2049847083906027563

What is the purpose of teaching math? - @pwharris

To develop mathematical reasoning #OAME2026 pic.twitter.com/0QMG97e8Ls

— David Petro (@davidpetro314) April 30, 2026

Math Links for Week Ending Apr 24, 2026

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Who doesn't want a large bank of challenging math problems?
Curriculum Tags: All
https://phys.org/news/2026-04-world-largest-olympiad-math-problems.html

phys.org/news/2026-04... World's largest collection of Olympiad-level math problems now available to everyone #Math #Maths #MathSky #MathOlympiad #iteachmath

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— Dawn Del Vecchio (@dawndelvecchio.bsky.social) April 23, 2026 at 5:09 PM

Resource Links

It's too late for Fawn but you can still check out the last one in this series or the summaries on the podcast
Curriculum Tags: All 
https://www.strongermath.com/mrc/

Hi hi! It's been a while.
I'm excited to share how I facilitate a 𝘃𝗶𝘀𝘂𝗮𝗹 𝗽𝗮𝘁𝘁𝗲𝗿𝗻𝘀 routine! Hope to learn from you also.

𝗦𝘂𝗻𝗱𝗮𝘆, 𝗔𝗽𝗿𝗶𝗹 𝟭𝟵, 𝗮𝘁 𝟭:𝟬𝟬 𝗣𝗠 𝗣𝗦𝗧
Register for the Math Routine Collaborative at https://t.co/mOHBC2r43C@Sneffleupagus pic.twitter.com/pj1LOpQQ67

— Fawn Nguyen (@fawnpnguyen) April 18, 2026

Radicals can be tricky so it's always good to see other approaches
Curriculum Tags: MPM2D, MCR3U, MCF3M
https://karendcampe.wordpress.com/2026/04/22/really-radical/

New blog post! "Really Radical" talks about how to handle teaching a tough topic in #algebra2 so students aren't lost in the weeds. #iTeachMath #MTBoS #T3Learns https://t.co/Qqso24wkwJ

— Karen Campe (@KarenCampe) April 23, 2026

Video Links

I can't get enough probability questions
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2047435455516549402

The probability of finding a Pikachu in Viridian Forest is 5% so you just need 20 encounters to ensure finding a Pikachu, right? Math doesn't work out like that. Let's do the math to find the probability of encountering at least one Pikachu in 20 encounters. pic.twitter.com/iQSQCP5CyS

— Howie Hua (@howie_hua) April 23, 2026

Image Links

A nice area related question
Curriculum Tags: MTH1W
https://bsky.app/profile/stevemaths.bsky.social/post/3mkadudzuk22w

Here is the first #OCRMathsPuzzle of the summer term. Diagram shows a square ABCD with quarter circles drawn with centres at A and B, radius equal to the side length. What percentage of the square has been covered by the quarter circles? #UKMathsChat #MathsToday @cambridgeocr.bsky.social

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— Steve Walker (@stevemaths.bsky.social) April 24, 2026 at 6:44 AM

Math Links for Week Ending Apr 17, 2025

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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. 10, 2026

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You can always count on @DavidKButler to go deep on a very cool math concept. This is perfect for showing the connections of different branches of math.
Curriculum Tags: All
https://davidkbutler.xyz/2026/04/10/home-away-geometric-arithmetic/

New blog post about my method of doing addition and multiplication using the geometry of parallel lines. It's called "Home & Away: Gometric Arithmetic". davidkbutler.xyz/2026/04/10/h...

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— David K Butler (@davidkbutler.bsky.social) April 10, 2026 at 2:23 AM

Resource Links

When I was a kid we made stop motion "movies" by drawing stick figures in novels. So it makes perfect sense to me to do stop motion for math too. 
Curriculum Tags: All
https://www.edutopia.org/article/stop-motion-movies-school-math

Stop-motion movies are made by recording one small change at a time—the perfect medium for capturing several fundamental math concepts! 📹 #MathSky #ITeachMath #EduSky

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— Edutopia (@edutopia.org) April 3, 2026 at 6:18 PM

Video Links

I love taking what seems like a trick then making it real by doing the math
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/2042018764808667479

A quick way of finding a fraction between two fractions pic.twitter.com/Nk7DgkkyDP

— Howie Hua (@howie_hua) April 8, 2026

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A classic demonstration 
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/math-problems.bsky.social/post/3mizkibgkcc2n

Demonstration of Triangle Sum #iteachmath #geometry

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— math-problems.bsky.social (@math-problems.bsky.social) April 8, 2026 at 8:29 PM

Math Links for Week Ending Apr 3, 2026

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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 Mar 20th, 2026

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In the end, this is a pretty simple idea. Basically it is this: create a review (or set of questions) where each answer is the same but don't tell them. I like the idea of a self checking assignment and (in this case) a fun April Fool's prank
Curriculum Tags: All
https://mathycathy.com/2026/03/the-april-fools-day-math-activity-students-never-forget/

Resource Links

Don't forget Slow Reveal Graphs. @JennaLaib continues to add to the collection with this one with Canadian data
Curriculum Tags: All
https://slowrevealgraphs.com/2026/03/17/percentage-of-canadian-population-that-is-asleep-by-time-of-day/

New #SlowRevealGraph: How many Canadians are awake at any given time of day?

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— Jenna Laib (@jennalaib.bsky.social) March 17, 2026 at 5:05 PM

Video Links

I think approaching this problem in this way makes it more like a puzzle and less like math for students
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/2034721609421135881

How can we find all integer solutions to 3x+2y=100?

Here's a quick introduction to solving linear Diophantine equations. pic.twitter.com/WKue0mgPQZ

— Howie Hua (@howie_hua) March 19, 2026

This was always one of my favourite little problems to do 
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/2034454153213378694

Let's learn how to convert a repeating decimal into a fraction pic.twitter.com/FgO9au6HdJ

— Howie Hua (@howie_hua) March 19, 2026

Image Links

Fun puzzle with primes
Curriculum Tags: MTH1W
https://bsky.app/profile/stevemaths.bsky.social/post/3mhisdreeec2e

Continuing with the prime theme, here is today's summer inspired #OCRMathsPuzzle. Each summer symbol in the grid below represents a prime number. The sum of each row and the sum of each column are given. Work out the value of each summer symbol. #UKMathsChat #MathsToday @cambridgeocr.bsky.social

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— Steve Walker (@stevemaths.bsky.social) March 20, 2026 at 11:09 AM

Math Links for Week Ending Mar 6th, 2026

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Our last episode of the season is where we ask all of the guests the same question and hear their response. This year we asked "What advice would you give a new teacher who is struggling to engage their math students?" Here are the results
Curriculum Tags: All
https://talks.oame.on.ca/season-8

[New Podcast] This is our last episode of the season where we asked all of our guests advice about engaging students. Featuring @realjmitchell.bsky.social @pwharris.bsky.social @cluzniak.bsky.social @themathguru.bsky.social &more Listen here: talks.oame.on.ca/season-8 #MathChat #MTBoS #iTeachMath

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— DavidPetro314 (@davidpetro314.bsky.social) March 3, 2026 at 8:45 PM

Resource Links

@KarenCampe continues to post classic NCTM calendar problems and I appreciate it
Curriculum Tags: All
https://karendcampe.wordpress.com/2026/03/01/march-calendar-problems-4/

The March Calendar of Problems is here! Enjoy some #ProblemSolving yourself or with students. Let us know your thoughts & working-out here or on post. #MTBoS #iTeachMath #T3Learns #RecreationalMath #MathChathttps://t.co/gfAsr8hdI7

— Karen Campe (@KarenCampe) March 1, 2026

Video Links

The area model to the rescue
Curriculum Tags: MPM2D, MCR3U, MCF3M, MBF3C
https://x.com/howie_hua/status/2030035682937405728

Let's learn how to factor by grouping and why it works pic.twitter.com/2BTLwRYsPY

— Howie Hua (@howie_hua) March 6, 2026

I'm thinking there is a sequence and/or series (or maybe a linear relations) question lurking in this video 
Curriculum Tags: MTH1W, MCR3U
https://x.com/davidpetro314/status/2030063900247433472

What #math problem could you ask about this video?#MathChat #MTBoS #iTeachMath https://t.co/k9wjXIOgSz

— David Petro (@davidpetro314) March 6, 2026

Image Links

Who doesn't like geometric art
Curriculum Tags: All
https://bsky.app/profile/veganjackson.bsky.social/post/3mgdsh6lt6v2i

Math Links for Week Ending Feb 27, 2026

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Even though for most curriculum we don't care about the surface area of a toroid, it could be easily worked in with this context. 
Curriculum Tags: MTH1W
https://youtu.be/CYjD9cpxT18?si=DQvqTExD8SLtzwCM

Resource Links

Open middle is a great structure to have kids think deeply. Here's one about perpendicular lines
Curriculum Links: MTH1W
https://www.openmiddle.com/perpendicular-lines-through-a-given-point/

If your students are learning about perpendicular lines, try out this Open Middle problem from Andy Schwen with them: www.openmiddle.com/perpendi...

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— Robert Kaplinsky (@robertkaplinsky.com) February 27, 2026 at 6:43 PM

I'm always happy to share summary posts like this one
Curriculum Tags: All
https://www.resourceaholic.com/2026/02/5-maths-gems-196.html 

New! My 196th gems post. Ideas, updates and resources for maths teachers.https://t.co/FgEC1lfnOY#mathsgems #mathschat #teammaths #mathscpdchat #mathstlp pic.twitter.com/lWClAxRpik

— Jo Morgan (@mathsjem) February 17, 2026

Video Links

As always, I like the fact that the reason why is explained
Curriculum Tags: MCR3U, MCF3M
https://x.com/howie_hua/status/2027134778953409006

One of the biggest "tricks" in algebra is "slide and divide." I honestly didn't understand why it worked until around 20 years after algebra class. Here's why it works. pic.twitter.com/eRyOqFhwbj

— Howie Hua (@howie_hua) February 26, 2026

Visualizing factoring 
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/2025303867903369621 

I wish I was taught this way of finding the greatest common factor when I was in school pic.twitter.com/7N87KSYsoB

— Howie Hua (@howie_hua) February 21, 2026

I always liked showing the connection between permutations and combinations
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2026390576086884641

The permutation and combination formulas don't just have to be formulas to memorize. Here's how we can derive them. pic.twitter.com/i2vjZwH94b

— Howie Hua (@howie_hua) February 24, 2026

Image Links

This would be a good discussion in class
Curriculum Tags: MTH1W
https://bsky.app/profile/mathspadnicola.bsky.social/post/3mfu655uwek2i

#mathstoday

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— Nicola Waddilove (@mathspadnicola.bsky.social) February 27, 2026 at 11:49 AM

Math Links for Week Ending Feb 13th, 2026

Featured Links

Some Valentines Day fun for math class
Curriculum Tags: All
https://colleenyoung.org/2026/02/08/for-valentines-day-2026/

Valentine's cards for mathsy friends?! colleenyoung.org/2026/02/08/f...

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— Colleen Young (@colleenyoung.bsky.social) February 13, 2026 at 12:53 PM

Resource Links

Keep those classic calendar links coming
Curriculum Tags: All
https://karendcampe.wordpress.com/2026/02/01/february-calendar-problems-4/

It's a SUPER day for #ProblemSolving Sunday!
Check out the February Calendar of Problems... which ones did you like from this past week?
Share your thinking & working out here or on the post.#MTBoS #iTeachMath #T3Learns #RecreationalMath https://t.co/th7fNLR4JV

— Karen Campe (@KarenCampe) February 8, 2026

Logic is defnintly a mathematical skill
Curriculum Tags: All
https://alicekeeler.com/2019/05/30/google-sheets-play-connect-four/

I created a Google Sheets template to play Connect Four. It allows you to create quiz cards and students earn their next move by answering the question. Google Sheets: Play Connect 4 alicekeeler.com/2019/05/30/g... #GoogleEDU #GoogleSheets #Gamification #EduSky

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— Alice Keeler (@alicekeeler.com) February 13, 2026 at 6:01 PM

Video Links

I love a good discussion about approximating mathematical quantities.
Curriculum Tags: MTH1W
https://bsky.app/profile/howiehua.bsky.social/post/3memfuxu4222q

How to visually approximate square roots

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— Howie Hua (@howiehua.bsky.social) February 11, 2026 at 4:21 PM

Image Links

I love this idea. So simple and low tech
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://bsky.app/profile/johngolden.bsky.social/post/3meovduibs32a

#mathstoday started with one of my favorite early probability activities. Students write events on stickies for almost never to almost always and another group tries to sort them. Lots of discussion about wording and googling for more info.

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— John Golden (@johngolden.bsky.social) February 12, 2026 at 4:03 PM