Math Links for Week Ending Aug 22, 2025

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I like problems like this because they seem very complex (or at least using brute force might be difficult) but with they can be solved with elegant simplification.
Curriculum Tags: MDM4U
https://x.com/pickover/status/1957992246025810135

Mathematics, Factorials, Mystery. pic.twitter.com/V9NFhPjDTD

— Cliff Pickover (@pickover) August 20, 2025

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I love the connection of something folksy and something new
Curriculum Tags: All
https://samjshah.com/2025/08/19/embroidering-an-aperiodic-tiling/

ACK! Another #MathArt post! I'm on a roll. Mainly because I'm trying to distract myself from the reality that school is starting up soon for me. Here's my embroidered aperiodic tiling. samjshah.com/2025/08/19/e... Instructions from: www.threadedtheorems.com/aperiodic-ti... #MTBoS

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— samjshah.bsky.social (@samjshah.bsky.social) August 18, 2025 at 9:23 PM

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This could be a good math starter
Curriculum Tags: All
https://bsky.app/profile/howiehua.bsky.social/post/3lwjl5yogrk25

A fun math magic trick and why it works:

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— Howie Hua (@howiehua.bsky.social) August 16, 2025 at 10:25 AM

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Finally an answer to the question "where will we need this?"
Curriculum Tags: MTH1W
https://bsky.app/profile/curiouspolymath.bsky.social/post/3lww77gtiis24

#mathsky

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— Pete Wung The Curious Polymath (@curiouspolymath.bsky.social) August 21, 2025 at 10:56 AM

I also wonder where they came up with those numbers. Looks like a graphing activity if you ask me. Linear regression to the rescue.
Curriculum Tags: MTH1W, MDM4U, MAP4C
https://x.com/bobloch/status/1958339726085427516

As a math teacher, I'm intrigued by the pricing model for 50/50 tickets by the @Twins #iteachmath pic.twitter.com/8VntHj8CJf

— Bob Lochel (@bobloch) August 21, 2025

Math Links for Week Ending Aug. 15th, 2025

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I don't know how important it is to determine this. However, these seem like good criteria
Curriculum Tags: All
https://www.edutopia.org/article/being-good-math-elementary-students

“Our students bring a wide range of skills to the classroom. That’s why we need to create spaces where every learner is seen as a capable mathematician.” ➗✨ #MathSky #ITeachMath #ElementaryTeacher

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— Edutopia (@edutopia.org) August 14, 2025 at 8:12 AM

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This could be the job of some dynamic geometry software or a nice coding project
Curriculum Tags: MTH1W
https://x.com/jamestanton/status/1955897428923548026

For each point inside a 3-4-5 right triangle, measure the three distances a, b, c shown and compute the sum a+b+c.
For which point is this sum largest?
For which point smallest?
Describe the locus of points with a+b+c=3. pic.twitter.com/KTgNkCu7Tw

— James Tanton (@jamestanton) August 14, 2025

Video Links

Some dynamic geometric math art
Curriculum Tags: All
https://x.com/jcponcemath/status/1956221664401973433

:) #mathart pic.twitter.com/NT6xknHbSU

— ∞ 𝕁uan ℂarlos (@jcponcemath) August 15, 2025

Algebra to the rescue (when it comes to explaining math tricks
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/1955301058286326255

If we subtract all the digits from any number, we will always get a multiple of 9. Let's see why! pic.twitter.com/O1kujPyjrf

— Howie Hua (@howie_hua) August 12, 2025

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This might capture the attention of a certain type of kid
Curriculum Tags: All
https://bsky.app/profile/curiouspolymath.bsky.social/post/3lwgxsbw5as27

#mathsky

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— Pete Wung The Curious Polymath (@curiouspolymath.bsky.social) August 15, 2025 at 9:33 AM

A good math starter
Curriculum Tags: All
https://bsky.app/profile/howiehua.bsky.social/post/3lwf6vygwec2g

I saw this math question on Who Wants To Be a Millionaire. Would you win $125,000? What would your strategy be?

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— Howie Hua (@howiehua.bsky.social) August 14, 2025 at 4:35 PM

A good example of the effects of an outlier
Curriculum Tags: MDM4U
https://bsky.app/profile/mathowitz.bsky.social/post/3lwbvmxmvqs2o

A great example of how easily numbers can be manipulated to make a point. The average run differential in the NL West is -40. 4 out of 5 teams have a positive run differential. The power of an outlier. #mtbos

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— Carl (@mathowitz.bsky.social) August 13, 2025 at 9:11 AM

Who doesn't like a good set of foodie data
Curriculum Tags: MDM4U
https://x.com/infobeautiful/status/1956006027297435880

World's favourite cuisines. 25,000 people in 24 countries were asked which nation's food they preferred. Interesting results 🍕 via @yougov pic.twitter.com/qNobI5xFic

— Information is Beautiful (@infobeautiful) August 14, 2025

Math Links for Week Ending Aug 8th, 2025

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I continue to be greatful when teachers add resources to the world on the regular. Whether they be new or retro
Curriculum Tags: All
https://karendcampe.wordpress.com/2025/08/01/august-calendar-problems-2/
https://www.resourceaholic.com/2025/08/5-maths-gems-191.html

August is here and so is the Calendar of Problems!
Back to school is soon (or now) so do some #ProblemSolving yourself or w/students.
Share your thinking here or on the post. #iTeachMath #MTBoS #T3Learnshttps://t.co/RFcpfNeq70

— Karen Campe (@KarenCampe) August 2, 2025

New! My 191st gems post. Ideas, resources and updates for maths teachers. 💎 www.resourceaholic.com/2025/08/5-ma... Hat tips to follow. #mathstoday #ukmathschat

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— Jo Morgan (@mathsjem.bsky.social) August 6, 2025 at 1:43 PM

Resource Links

There is more than just Slow Reveal Graphs on @JennaLaib's site. Check out this post 
Curriculum Tags: All
https://slowrevealgraphs.com/2025/08/02/blog-digging-into-data-sources/

New #SlowRevealGraph Blog Post:
Digging Into Data Sources
A few years ago, I started citing not just the source of the graph, but the source of the data behind it. I explain why that's important, and how it can change our interpretation.https://t.co/tRtMlmTxu5

— Jenna Laib (@jennalaib) August 2, 2025

This could be handy when talking about types of numbes 
Curriculum Tags: MTH1W
https://mathequalslove.net/prime-numbers-chart-1-3000/

Prime Numbers Chart 1-3000 mathequalslove.net/prime-number... #mtbos #iteachmath #mathsky #edusky

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— Sarah Carter (@mathequalslove.bsky.social) August 6, 2025 at 6:18 PM

Creating a culture of learning in our classes is so important
Curriculum Tags: All
https://www.edutopia.org/article/students-experts-math-class

Excited to share my recent article published on @edutopia.org! It doesn't take much to start to shift practice towards a more shared culture of teaching and learning in our math classrooms. #MTBOS #elemmathchat #iteachmath #edusky #mathsky www.edutopia.org/article/stud...

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— Louisa Connaughton (@lpconnaughton.bsky.social) August 5, 2025 at 2:43 PM

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I'm sure I'm not the only one for whom this resonates
Curriculum Tags:All
https://www.youtube.com/watch?v=gpy-Yut8Jw4

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Make sure that when you ask questions, you are clear what you are asking :-)
Curriculum Tags: All
https://x.com/mathladyhazel/status/1948472769177681964

The best math joke about π. 😂 pic.twitter.com/S1hQptcXhp

— Math Lady Hazel 🇦🇷 (@mathladyhazel) July 24, 2025

Math Links for Week Ending Aug 1st, 2025

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I have always liked the work that @AndrewStadel does. So it is interesting to hear who he has looked to for guidance
Curriculum Tags: All
https://www.andrewstadel.com/blog/mathgiants

New Blog and YouTube post: 5 Math Giants who have Inspired Me. • there's a 6th (most important) BONUS giant. www.andrewstadel.com/blog/mathgia... I hope they inspire you too and I'd love to hear who has inspired you. #iteachmath #mtbos

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— Andrew Stadel (@astadel.bsky.social) July 29, 2025 at 11:26 AM

Resource Links

I am a fan of BTC but I am not sure that it's a panecea. So I like this honest take on it
Curriculum Tags: All
https://fawnnguyen.substack.com/p/permission-to-go-off-script

New post: Permission to Go Off Script Building Thinking Classrooms practices are powerful—but they’re not all-or-nothing fawnnguyen.substack.com/p/permission...

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— Fawn Nguyen (@fawnnguyen.substack.com) July 5, 2025 at 8:10 PM

Lots of Pythagorean Theorem ideas here
Curriculum Tags: Gr8, MTH1W, MPM2D, MFM2P
https://karendcampe.wordpress.com/2025/07/30/pythagorean-party/ 

New Blog Post: "Pythagorean Party!" technology activities and visuals to celebrate pythagorean theorem & related concepts. #MTBoS #iTeachMath #T3Learns #geometry #MathSky #MathsToday #RecreationalMath karendcampe.wordpress.com/2025/07/30/p...

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— Karen Campe (@karencampe.bsky.social) July 30, 2025 at 9:08 AM

Video Links

I love patterns that can be disected with a little bit of algebra
Curriculum Tags: MTH1W, MFM2P
https://x.com/howie_hua/status/1949553347842974001

Why do we always get 37 with this pattern? pic.twitter.com/AoNVWsSqjp

— Howie Hua (@howie_hua) July 27, 2025

I like the connection to addition and multiplication to help visualize the associative property
Curriculum Tags: All
https://x.com/howie_hua/status/1949141932003021075

I remember learning about the associative property in school and remembered it was so boring, but it can help us with mental math! pic.twitter.com/n8S6Ga0Fjc

— Howie Hua (@howie_hua) July 26, 2025

What a fun unit fraction pattern
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/1950580422213283999

Cool fraction pattern: You can write a unit fraction as a sum of two distinct unit fractions, and we can do this mentally! pic.twitter.com/2F2ubIfeO1

— Howie Hua (@howie_hua) July 30, 2025

Image Links

A good math starter dealing with inequalities
Curriculum Tags: MTH1W
https://bsky.app/profile/percybuttons3.bsky.social/post/3lvahi74ogm2k

Math Links for Week Ending July 25th, 2025

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

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

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

Resource Links

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

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

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

Video Links

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

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

— Howie Hua (@howie_hua) July 23, 2025

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

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

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

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

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

— Howie Hua (@howie_hua) July 22, 2025

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

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

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

Math Links for Week Ending July 18, 2025

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What a great build. I love when people both have great ideas and do the heavy lifting
Curriculum Tags: All
https://classroom.amplify.com/activity/6873502673785e2ffd9fc505?checkAmplifyLogin=true

Playing Mastermind with my 6 year old inspired me to make this in #Desmos. I discovered I'm a lot worse at guessing than I thought! #MTBoS #iteachmath classroom.amplify.com/activity/687...

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— Dan Wekselgreene (@dwekselgreene.bsky.social) July 13, 2025 at 2:17 PM

Resource Links

The fact that @JennaLaib continues to add to this site means it makes total sense to continue to point it out
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://slowrevealgraphs.com/

There’s a bunch of new slow reveal graphs up at https://t.co/OhsfPtDqKx!

-what fraction of Nobel Prize winners for science awards are immigrants?
- where do Americans travel within the US?
- what’s more expensive: a pound of a Porsche or a pound of pecorino?
And more!

— Jenna Laib (@jennalaib) July 13, 2025

I don't think we can have too many ways to deal with the fact that AI is on the mind of both teachers and students
Curriculum Tags: All
https://kurtsalisbury.substack.com/p/when-struggle-gets-outsourced

A few weeks back, I was honored to deliver a keynote address at a summer academy for math educators. One question has stuck with me ever since. @amplifyeducation.bsky.social #iteachmath #amplify #AI #edtech. kurtsalisbury.substack.com/p/when-strug...

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— Kurt Salisbury (@kurt-salisbury.bsky.social) July 14, 2025 at 9:09 AM

This has always been an issue. Now no matter how many times you change your Desmos graph, the link will stay the same.

Curriculum Tags: All
https://help.desmos.com/hc/en-us/articles/4405901719309-Saving-and-Sharing-Graphs

Me? Typos? Never… When you save your graph, the link now automatically updates with your latest saved edits. Learn more about saving and sharing your graphs in the Desmos Help Center: help.desmos.com/hc/en-us/art... #iteachmath

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— Desmos Studio 🔜 APAC25 (@desmos.com) July 16, 2025 at 11:25 AM

Video Links

I always appreciate a visual example of the difference between Permutations and Combinations
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/1945580493761908895

What's happening in the permutation and combination formulas? Let's make sense of them! pic.twitter.com/SQsbeYii0R

— Howie Hua (@howie_hua) July 16, 2025

Image Links

Here is your week 7 prompt
Curriculum Tags: All
https://bsky.app/profile/theericklee.bsky.social/post/3lu6kiexf3s2p

The penultimate week of #MathPhoto25 is #circles! Where do you notice circles, cylinders, spheres or ellipses in the world around you? #ITeachMath #MathsToday

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— Erick Lee (@theericklee.bsky.social) July 17, 2025 at 2:23 PM

Math Links for Week Ending Jul 11th, 2025

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

New unit rate context just dropped #MTBOS #ITeachMath

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

Resource Links

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

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

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

Video Links

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

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

— Howie Hua (@howie_hua) July 10, 2025

Image Links

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

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

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