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

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 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

Image Links

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 22nd, 2026

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This is a super cool new feature of @Desmos Studio (and it works with all the calculators). I can't wait to try it out. 
Curriculum Tags: All
https://www.desmos.com/notebook/fgedhep7ta/view

Introducing Desmos Notebook (beta), our newest tool that combines text, expressions, sliders, and graphs all in one place. As you get to know Notebook, we’d love to hear your feedback, feature requests, and any bugs you find. We can’t wait to see what you create! #iteachmath #mathsky #iteachphysics

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— Desmos Studio (@desmos.com) May 22, 2026 at 9:24 AM

 

Resource Links

Department heads don't always have avenues for advice. So any little bit helps
Curriculum Tags: All
https://www.resourceaholic.com/2026/05/tasks-for-summer-term.html

I wrote a post for new/inexperienced Heads of Maths about some of the things they can do this term to ensure their department hits the ground running in September. Hope someone finds it helpful!https://t.co/9pSJBYyr0E#mathschat #mathsgems #mathscpdchat #teammaths pic.twitter.com/Bw4So6nv4Z

— Jo Morgan (@mathsjem) May 17, 2026

Video Links

A couple of related videos about flipping coins. I like the problem context of the second one
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2057191476036288755
https://x.com/howie_hua/status/2057574765465104573

If you repeatedly flip a coin, which sequence is more likely to appear first: HTT or TTH?

Believe it or not, one is 3 times more likely to appear first! pic.twitter.com/u2SR5BPmEz

— Howie Hua (@howie_hua) May 20, 2026

In my last video, we saw that if we repeatedly flip a coin, there's a 75% chance that HTT will appear first in the sequence over TTH.

This is part of something potentially weirder. Let's learn about Penney's game. pic.twitter.com/vXhnKfr459

— Howie Hua (@howie_hua) May 21, 2026

Image Links

Nice variations
Curriculum Tags: All
https://bsky.app/profile/murrayh83.bsky.social/post/3mlqvgx6br222

Pattern block play! #21CenturyPB #iTeachMath

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— Hana Murray (@murrayh83.bsky.social) May 13, 2026 at 2:07 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 May 8th, 2026

Featured Links

I have lots of opinions about appropriate assessment and alternatives to the traditional assessments, so I'm always interested in other ideas
Curriculum Tags: All
https://www.edutopia.org/article/my-5th-graders-taking-math-tests

A math test format that reduces stress for students *and* teachers? Yes, it’s possible! 🙌 Check out how this school gave assessments a makeover. #MathSky #ITeachMath #EduSky

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— Edutopia (@edutopia.org) May 5, 2026 at 6:36 PM

Resource Links

Check out @Mathsjem's list of resources. 
Curriculum Tags: All
https://www.resourceaholic.com/2026/05/5-maths-gems-198.html

New! My 198th gems post. Ideas, updates and resources for maths teachers. 💎 https://t.co/hLENa05kYk

Hat tips to follow. #mathsgems #mathschat #teammaths #mathscpdchat #mathstlp pic.twitter.com/jE7VQ7xCA8

— Jo Morgan (@mathsjem) May 3, 2026

Video Links

A little sense of how you could use thin slicing with trig
Curriculum Tags: MPM2D, MFM2P
https://x.com/TimBrzezinski/status/2050222840897552700

Start of a #ThinkingClassroom thin slice in #geometry class yesterday. @pgliljedahl @BTCthinks #buildingthinkingclassrooms pic.twitter.com/CAcYVUW4JD

— Tim Brzezinski (@TimBrzezinski) May 1, 2026

Some fun with difference of squares
Curriculum Tags: MPM2D, MFM2P
https://x.com/howie_hua/status/2052791346583257283

How did he compute 255²-245² so quickly? Here's a good mental math trick. pic.twitter.com/R25m43eFB7

— Howie Hua (@howie_hua) May 8, 2026

Image Links

Something for next year
Curriculum Tags: All
https://x.com/howie_hua/status/2051331153072717946

May the fourths be "with you"! pic.twitter.com/sGWzKqQWck

— Howie Hua (@howie_hua) May 4, 2026

Math Links for Week Ending May 1, 2026

Featured Links

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

Image Links

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