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

Math Links for Week Ending Apr 24, 2026

Featured Links

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

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. 10, 2026

Featured Links

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

Image Links

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

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 Mar 27th, 2026

Featured Links

A weekly prompt? I like the idea of the cross curricular math activity
Curriculum Tags: All
https://denisegaskins.com/2026/03/26/thinking-thursday-leo-tolstoy/

Thinking Thursday: Leo Tolstoy Try this week's math journaling prompt with your kids! #homeschooling #mathjournal #letsplaymath #mtbos #iteachmath

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— Denise Gaskins (@denisegaskins.com) March 26, 2026 at 9:01 AM

Resource Links

Check out all the Tape diagrams
Curriculum Tags: All
http://bit.ly/TapeDiagramTuesday

It's time for #TapeDiagramTuesday!Here's what to do: 1. Pick a problem. 2. Solve it using a tape diagram to model your thinking. - - - - OR - - - - Give the problem to your students to model. 3. Share your model with #TapeDiagramTuesday #iTeachMath

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— Duane Habecker (@duanehabecker.com) March 24, 2026 at 8:00 AM

Video Links

Nice geometric video
Curriculum Tags: All
https://bsky.app/profile/maria-naturalmath.bsky.social/post/3mhv2cwtef22x

So pleasing to watch! #iTeachMath

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— Maria D. at Natural Math (@maria-naturalmath.bsky.social) March 25, 2026 at 8:04 AM

You just have to keep it slow and think logically
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2036907773926269435

Let's learn about conditional probability pic.twitter.com/KfupYfT7HV

— Howie Hua (@howie_hua) March 25, 2026

Love the Monty Hall Problem
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2037257191930130688

Let's understand the Monty Hall problem pic.twitter.com/dFlv8gd2uZ

— Howie Hua (@howie_hua) March 26, 2026

Image Links

Pattern Block Fun
Curriculum Tags: All
https://bsky.app/profile/murrayh83.bsky.social/post/3mhvofspfx22e

Pattern block play! #21CenturyPB #iTeachMath

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— Hana Murray (@murrayh83.bsky.social) March 25, 2026 at 2:04 PM

Math Links for Week Ending Mar 20th, 2026

Featured Links

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 13, 2026

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My yearly time to point to my Pi Pinterest page
Curriculum Tags: All
https://www.pinterest.com/davidpetro314/pi-day/

Resource Links

And I always like seeing other people's Pi Day pages
Curriculum Tags: All
https://www.transum.org/Software/SW/Starter_of_the_day/starter_March14.asp

Tomorrow is #PiDay, the perfect excuse to celebrate the most famous number in Maths! If you're looking for a quick classroom starter, puzzle or activity for 14 March, take a look at my Pi Day page: www.transum.org/Intro/Starte... #Maths #MathChat #Teachers #PiDay2026

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— transum.bsky.social (@transum.bsky.social) March 12, 2026 at 11:29 PM

Video Links

For combinatorics, it's important to break the problems down in to logical steps. 
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2031884126807343574

How many ways can we split 12 color guard members so we have 4 rifles, 4 sabres, and 4 flags? pic.twitter.com/DrBiauVW2t

— Howie Hua (@howie_hua) March 12, 2026

You can always count on @standupmaths to give us something interesting about Pi but this is not actually this year's attempt
Curriculum Tags: All
https://www.youtube.com/watch?v=IY0pf0-Daew

This is this year's attempt at a weird way to determine the ways to find Pi
Curriculum Tags: MDM4U

https://youtu.be/kahGSss6SsU?si=ESccNHD-WvPtu7rN

Thank you Archemedes
Curriculum Tags: All

https://x.com/howie_hua/status/2032789235678457930

Happy pi day! Here's how Archimedes approximated the value of pi and how many digits of pi we actually need. pic.twitter.com/RCBSAhhuwv

— Howie Hua (@howie_hua) March 14, 2026

Image Links

Dad joke/Math Joke alert
Curriculum Tags: All
https://x.com/miniapeur/status/2032285090735112619

pic.twitter.com/hrMDEFaL05

— Mathieu (@miniapeur) March 13, 2026

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 20th, 2026

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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

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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

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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

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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 Feb 13th, 2026

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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

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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

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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

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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

Math Links for Week Ending Feb 6th, 2026

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We've just released the three preview episodes to hear the featured and keynote speakers from the upcoming OAME 20256 conference. More info and registration info at the link below
Curriculum Tags: All
https://talks.oame.on.ca/season-8

[New Podcast] It's the @OAMEcounts #OAME2026 Day 1 preview. Featuring @pwharris Alex Lawson and @CathyMarksKrpan Listen here: https://t.co/FNER2hKfFF

Check out all the conference info at https://t.co/SrSBmfTk9y #MathChat #MTBoS #iTeachMath pic.twitter.com/kzSOCmvb8t

— OAMEtalks (@OAMEtalks) February 1, 2026

[New Podcast] It's the @OAMEcounts #OAME2026 preview #2. Featuring @howie_hua and Ron Lancaster. Listen here:https://t.co/FNER2hKfFF

Check out all the conference info at https://t.co/vuqJngqBgK #MathChat #MTBoS #iTeachMath pic.twitter.com/FwnkSaWcSp

— OAMEtalks (@OAMEtalks) February 2, 2026

[New Podcast] It's the @OAMEcounts #OAME2026 Day 2 preview. Featuring Dr. Pamela Seda @cluzniak @MarianSmall & Ian VanderBurgh. Listen here:https://t.co/FNER2hKNvd

Check out all the conference info at https://t.co/vuqJngr96i#MathChat #MTBoS #iTeachMath pic.twitter.com/bxqei1uEyN

— OAMEtalks (@OAMEtalks) February 3, 2026

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It seems crazy that someone would complain about this
Curriculum Tags: All
https://www.nature.com/articles/d41586-026-00254-z

No joke: I got angry hate mail today for writing an obituary of a Black woman scientist—because the person felt she did didn’t deserve the recognition. Which just makes me want to share it again: www.nature.com/articles/d41...

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— jennifer uncoolidge (@histoftech.bsky.social) February 6, 2026 at 4:09 AM

I think embracing mistakes is absolutely necessary in math class
Curriculum Tags: All
https://www.edutopia.org/article/five-math-procedures-to-help-students-learn-from-their-mistakes

In math, learning from mistakes can help students solidify a formula, drive home a complex concept, or prepare them for future assessments. But this will only happen if students learn to value mistakes. Here is one strategy math teacher Emma Chiappetta uses to help students embrace errors. 🧵 1/6

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— Edutopia (@edutopia.org) February 5, 2026 at 8:28 PM

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I like the idea of reasoning through this type of problem
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/2018000063772180590

Without calculating, is 15.99/3.99 greater than 4, less than 4, or equal to 4? pic.twitter.com/g1F7yAr5c5

— Howie Hua (@howie_hua) February 1, 2026

I'm a sucker for a good Fibonacci connection
Curriculum Tags: All
https://x.com/howie_hua/status/2019158684602102073

Here's a cool math fact: If we can go up a set of stairs at one or two steps at a time, the number of different ways we can go up those stairs will always be a Fibonacci number! Here's why: pic.twitter.com/yE4LlFtpFR

— Howie Hua (@howie_hua) February 4, 2026

Geometric Art
Curriculum Tags: All

https://x.com/Aartworlld/status/2017919292092957117

pic.twitter.com/IwMDqoWUe3

— Art world (@Aartworlld) February 1, 2026

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I love the tessolatability of this shape
Curriculum Tags: All
https://bsky.app/profile/murrayh83.bsky.social/post/3me7la7aw3c2h

Pattern block play! #21CenturyPB #iTeachMath

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— Hana Murray (@murrayh83.bsky.social) February 6, 2026 at 1:53 PM

Math Links for Week Ending Jan 30th, 2026

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I have known about this software for more than a decade and was just reminded of it. I love it for doing some real projectile motion analysis in your classes. Start throwing stuff around and doing some math (and physics)
Curriculum Tags: MCR3U, MCF3M
https://opensourcephysics.github.io/tracker-website/

Free open source software, Tracker, that lets you upload videos of moving objects & easily move frame by frame to mark the object's motion. Perfect for both #physics and #math class https://t.co/30KvoyCfgi#MathChat #MTBoS #iTeachMath #ProjectileMotionhttps://t.co/pIfvF2rsxK

— David Petro (@davidpetro314) January 26, 2026

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Increasing opportunities for risk taking is important in any class, but especially math class
Curriculum Tags: All
https://www.edutopia.org/article/helping-students-learn-try-math

By explicitly talking to students about what trying in the classroom means, you can help them build the independence and resilience they need to tackle problems within their lessons and beyond. 💫 #MathSky #ITeachMath #EduSky

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— Edutopia (@edutopia.org) January 28, 2026 at 11:17 AM

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This is a very cool property. And if you want a Desmos version, here you go.
Curricuulum Tags: MTH1W
https://x.com/pickover/status/2016872144248934727

Mathematics.

→ "Hidden secret in every triangle."

Credit: saroa_academy. I didn’t upload this video to 𝕏. I’m pointing to a video residing in the 𝕏 stream of “S.T.E.M Explorer”, 𝕏 ID “stemexplor” (Jan 28, 2026). pic.twitter.com/43MmOPZmbD

— Cliff Pickover (@pickover) January 29, 2026

I know about multiplying via rectangles so I guess in it makes sense you can divide using them
Curriculum Tags: All
https://x.com/howie_hua/status/2016970442125561964

Let's learn how to divide using rectangles pic.twitter.com/mJwKHumxbu

— Howie Hua (@howie_hua) January 29, 2026

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20th Century pattern blocks to the rescue
Curriculum Tags: All
https://bsky.app/profile/murrayh83.bsky.social/post/3mdnxm6uj5s2m

Looking back at the snowflake designs created in January! #21CenturyPB #PatternBlocks #CuisenaireRods #iTeachMath

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— Hana Murray (@murrayh83.bsky.social) January 30, 2026 at 1:46 PM

Math Links for Week Ending Jan. 23rd, 2026

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This site has been around for more than a decade so it was great to get a reminder of it. What a great connection of art, data and infographics.
Curriculum Tags: MDM4U
https://www.dear-data.com/theproject

via my favorite librarian www.dear-data.com/theproject pretty amazing #mathart #dataviz project

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— John Golden (@johngolden.bsky.social) January 19, 2026 at 2:07 PM

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I have always been a fan of Slow Reveal Graphs and you should be too. Here is a collection from @marktrushkowsky.bsky.social that deals with many of the current events that are in the news right now. Thanks to @benjamindickman.bsky.social for pointing it out.
Curriculum Tags: MDM4U
https://www.collectedny.org/2026/01/slow-reveal-graphs-current-events/

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It's always good to have a mechanical way to prove geometric theorems
Curriculum Tags: MAT1W
https://x.com/TimBrzezinski/status/2014109261035442607

No tech. Just paper. Pure simplicity. Here, an effective means for students to explore any polygon’s exterior angles. #mathematics #geometry pic.twitter.com/kzue5KuGET

— Tim Brzezinski (@TimBrzezinski) January 21, 2026

This makes total sense but I have never taught it this way
Curriculum Tags: MCR3U
https://x.com/howie_hua/status/2013705992761156018

Let's learn how to evaluate fractional exponents pic.twitter.com/0yjyX9U5DS

— Howie Hua (@howie_hua) January 20, 2026

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Let the math memes continue
Curriculum Tags: MCR3U
https://bsky.app/profile/curiouspolymath.bsky.social/post/3mcwwbwl5ks2u

#mathsky

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— Pete Wung The Curious Polymath (@curiouspolymath.bsky.social) January 21, 2026 at 9:51 AM