Math Links for Week Ending July 18, 2025

Featured Links

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 May 23, 2025

Featured Links

If you didn't already know, @Desmos Classroom will be turning into @Amplify Classroom. Check out this webinar for more info
Curriculum Tags: All
https://amplify.zoom.us/webinar/register/WN_zYeYp7aJRXSYkSST-uTuGA#/registration

#ICYMI: On June 28, Desmos Classroom will become Amplify Classroom as we expand to science and literacy! Drop by our webinar, where we'll discuss exciting updates to the platform experience. Gain exclusive insights into the upgraded platform. Register here:https://t.co/f3XwZfRxaj pic.twitter.com/dq72xQtJT1

— Desmos Classroom (@desmosclassroom) May 22, 2025

Resource Links

It looks like @FawnpNguyen is blogging again. Here is a nice starter activity if you are introducing or reviewing perimeter and area
Curriculum tags: All
https://fawnnguyen.substack.com/p/dot-paper-task

In Canada we got rid of the penny years ago. Still, here's a relevant Slow Reveal Graph 
Curriculum Tags: Gr7, Gr8, MDM4U
https://slowrevealgraphs.com/2022/01/09/cost-of-minting-us-coins-pennies-nickels-cost-more-than-their-face-value/







Some information on dealing with students who have Dyscalculia
Curriculum Tags: All
https://www.edutopia.org/article/teaching-students-dyscalculia

If a student is struggling in math, dyscalculia could be the reason. ➗ Here are some ways to recognize signs—and strategies designed for learners with dyscalculia. #dyscalculia #EduSky #ITeachMath #MathSky

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— Edutopia (@edutopia.org) May 23, 2025 at 12:37 PM

Video Links

This is a great way to compare fractions 
Curriculum Tags: Gr7, Gr8 MTH1W
https://x.com/howie_hua/status/1926038342602289212

A lot of people use common denominators when comparing fractions, but did you know we can use common numerators as well? Here's how we can do this: pic.twitter.com/7c6Hge6meE

— Howie Hua (@howie_hua) May 23, 2025

Image Links

A couple of Tape Diagrams for you 
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/duanehabecker.com/post/3lp2gq65ale2a
https://bsky.app/profile/duanehabecker.com/post/3lp2gzacchk2p

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) May 13, 2025 at 8:00 AM

It's time for your #TapeDiagramTuesday extra challenge! Model your solution strategy with a tape diagram. Then share it with the community! #iTeachMath

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— Duane Habecker (@duanehabecker.com) May 13, 2025 at 8:05 AM

Math Links for Week Ending May 2nd, 2025

Featured Links

It's the OAME annual conference this week and even though there are hundreds of face to face sessions, you can take part in the virtual version from the comfort of your own couch. Register at the link below.
Curriculum Tags: All
https://mcis.oame.on.ca/

Announcing the OAME2025 Virtual Conference. Can't make it to our in-person event? Check out our Virtual Conference option and register at https://t.co/2MQTuRrtO3. @OAMEcounts pic.twitter.com/5cHpDB9Iz9

— OAMElearns (@OAMElearns) April 15, 2025

Resource Links

The latest set of classic NCTM calendar problems.
Curriculum Tags: All
https://karendcampe.wordpress.com/2025/05/01/may-calendar-problems-3/

The May Calendar of Problems is here! Enjoy some #Math #ProblemSolving in the home stretch of your school year! Plus Bonus Article "Table Techniques" using table of values as dynamic tool w/technology. #MTBoS #iTeachMath #T3Learns #MathSky #MathsToday karendcampe.wordpress.com/2025/05/01/m...

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— Karen Campe (@karencampe.bsky.social) May 1, 2025 at 8:21 AM

Video Links

This is so fun.
Curriculum Tags: All
https://www.youtube.com/watch?v=MzMPK7OeHow

Image Links

You have to love 21st century pattern blocks
Curriculum Tags: All
https://bsky.app/profile/murrayh83.bsky.social/post/3lo4x63a73k2y

More pattern block play with heptagons–same shapes as last month, but now arranged a bit differently! #21CenturyPB #iTeachMath

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— Hana Murray (@murrayh83.bsky.social) May 1, 2025 at 2:34 PM

Some sugary data for you
Curriculum Tags: Gr7, Gr8, MDM4U
https://x.com/infobeautiful/status/1917910180387258711

Sweet teeth in the East. How much sugar in Fanta
via @simongerman600 pic.twitter.com/xOvm5Tr9Eb

— Information is Beautiful (@infobeautiful) May 1, 2025

Math Links for Week Ending Dec 6th, 2024

Featured Links

I am a big fan of rethinking traditional assessment methods. Even small tweaks in what you do can make assessment more fair for student. Here are some ideas that might get your interest
Curriculum Tags: All
https://www.edutopia.org/article/why-teachers-should-grade-less-frequently

In my latest Edutopia article, Stanford prof. Denise Pope points out the glaring problem with grades: “The first thing kids would do is go to the back of the paper, look at the grade, and never read my comments." 9 reasons why teachers should grade less: www.edutopia.org/article/why-... #EduSky

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— Youki Terada (@youkiterada.bsky.social) November 25, 2024 at 1:22 PM

Resource Links

Here is the classic December NCTM calendar
Curriculum Tags: All
https://karendcampe.wordpress.com/2024/12/01/december-calendar-problems-3/

December #ProblemSolving Calendar is here! Enjoy & share your process here. Also: BONUS articles on Mathematical Curiosity. Sign up to get an email for new posts 😊 (help me crack 100 followers?) #MTBoS #iTeachMath #RecreationalMath #MathSky #MathsToday karendcampe.wordpress.com/2024/12/01/d...

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— Karen Campe (@karencampe.bsky.social) December 1, 2024 at 12:14 PM

Here is a neat applet that can help visualize multiplcations of different types from @Knowledgehook
Curriculum Tags: All
https://manipulatives.knowledgehook.com/multiplicationgrid/

We should embrace the fact that area models with Whole Numbers, Mixed Numbers and Pure Decimals are all exactly the same. #MathSky #EduSky #ElemMathChat

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— Andrew Fenner (@numbershapes.bsky.social) December 2, 2024 at 7:39 AM

Here are some neat fractions activities from a blog who's name I love, SatisFraction
Curriculum Tags: Gr7, Gr8, MTH1W
https://satisfry.blogspot.com/

A fractions task, of sorts. More here: satisfry.blogspot.com

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— ProfSmudge (@profsmudge.bsky.social) November 19, 2024 at 4:55 AM

Video/Audio Links

Listen to our latest podcast
Curriculum Tags: All
https://talks.oame.on.ca/season-7

[New Podcast] This episode features@livelovemath314 previewing their Dec 11th @OAMEcounts webinar "Math Without Worksheets". More info: https://t.co/95KyY9ZtpW #mathchat #MTBoS #iTeachMath pic.twitter.com/PoqFierjzQ

— OAMEtalks (@OAMEtalks) December 1, 2024

Use geometric methods to discuss an optical illusion
Curriculum Tags: MTH1W
https://bsky.app/profile/tbrzezinski.bsky.social/post/3lc3n4cxjw22b

Which segment is longer? 👀 youtube.com/shorts/pAG-P... & www.geogebra.org/m/g56sjfq9 @geogebra.org #MTBoS #ITeachMath #illusion #edusky

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— Tim Brzezinski (@tbrzezinski.bsky.social) November 29, 2024 at 7:59 AM

I have always loved this puzzle. I like how you can use slope to prove how it works
Curriculum Tags: MTH1W
https://bsky.app/profile/tbrzezinski.bsky.social/post/3lbwjq3e2fs23

Area changing illusion 👀 Why does the area seem to change? 🤔 For an explanation as to why this happens, see youtu.be/6leIwa3PA2E?.... #MTBoS #ITeachMath #math #maths #illusion #paradox #edusky

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— Tim Brzezinski (@tbrzezinski.bsky.social) November 27, 2024 at 7:15 AM

Here is a nice twist on Which One Doesn't Belong that encourages student dialogue.
Curriculum Tags: All
https://bsky.app/profile/howiehua.bsky.social/post/3lcbduvyivc2r

Teaching tip: Here's how I spice up the activity "Which One Doesn't Belong?" #math #ITeachMath youtube.com/shorts/QC_is...

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— Howie Hua (@howiehua.bsky.social) December 1, 2024 at 2:30 PM

Flexible thinking at it's finest
Curriculum Tags: All
https://bsky.app/profile/saravanderwerf.bsky.social/post/3lcjoyxkgsk2c

Here was his great math Let’s put more of this on TV. Shout out to MN Sarah Carter for finding this.

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— Sara Van Der Werf (@saravanderwerf.bsky.social) December 4, 2024 at 10:10 PM

I am not a fan of mathematical tricks but I always like how @Howie_Hua explains why they work
Curriculum Tags: All
https://bsky.app/profile/howiehua.bsky.social/post/3lcjl2fj2o22z

A neat way of dividing by 5: #ITeachMath #EduSky #math

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— Howie Hua (@howiehua.bsky.social) December 4, 2024 at 8:59 PM

Get your triangle geometry puzzler warmed up
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/1862541860440564223

A fun math puzzle pic.twitter.com/R1nQjIrpit

— Howie Hua (@howie_hua) November 29, 2024

I like this "impossible" problem for algebra
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/1864073876319195452

Why is this rectangle impossible? (Thanks to @StudyMaths for the problem) pic.twitter.com/jBPNa9m9pQ

— Howie Hua (@howie_hua) December 3, 2024

Image Links

I think @Howie_Hua sums up what I think about these types of questions. Don't get me wrong, I think they are great. But they also show students that algebra doesn't have to be as hard as it seams.
Curriculum Tags: All
https://bsky.app/profile/afreeparticle.com/post/3lcjn5cqawc2r

Trying to have people solve a system of linear equations on social media: #math #ITeachMath #EduSky

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— Howie Hua (@howiehua.bsky.social) December 4, 2024 at 6:37 PM

Solving Equations? Try this
Curriculum Tags: MTH1W
https://x.com/pickover/status/1862852451981758578

Mathematics. Nothing but x's.

I wonder what is the value of x (aside from x = 0)? pic.twitter.com/RAGEODkGxU

— Cliff Pickover (@pickover) November 30, 2024

Where does all that plastic go?
Curriculum Tags: Gr7, Gr8, MDM4U
https://x.com/infobeautiful/status/1862525740304007255

Guess what % of plastics have been #recycled? No prizes :( pic.twitter.com/YgCP4LQPJj

— Information is Beautiful (@infobeautiful) November 29, 2024

Doing some work with diameters and radii? Try this
Curriculum Tags: Gr7, Gr8
https://x.com/GeometryPuzzles/status/1862559318039830899

Geometry challenge #geometry pic.twitter.com/aScNUc5CsV

— Math Lover (@GeometryPuzzles) November 29, 2024

I have not heard of a Gollygone before but this might be a good starter in a high school math class
Curriculum Tags: All
https://x.com/pickover/status/1862563740849246217

Mathematics.

Don't you just love Golygons? A "Golygon" is any polygon with all right angles (a rectilinear polygon) whose sides are consecutive integer lengths.

The smallest Golygon (below) has 8 sides. It's the only solution with fewer than 16 sides. https://t.co/LBKXsGKEsM pic.twitter.com/wjKoL5ENzI

— Cliff Pickover (@pickover) November 29, 2024

    

Math Links for Week Ending Sept 20th, 2024

Featured Links

I think that no matter what level you teach at (or were a student at) this happens. Whether it is the idea of feeling dumb (as a student) or assuming the students know more than they do (as a teacher). As students we have probably all felt this (though maybe at different times in our time as students. 
Curriculum Tags: All
https://mathforlove.com/2024/09/the-centrality-of-stupidity-in-mathematics/

Resource Links

There are so many graphs to choose from on Slow Reveal Graphs, but I like to highlight ones that might resonate with students
Curriculum Tags: Gr7, Gr8, MDM4U
https://slowrevealgraphs.com/2024/08/21/inflation-across-fast-food-chains-from-2014-to-2024/

It's definitely worthwhile for your students who are looking for a challenge to participate in the CEMC math contests
Curriculum Tags: All
https://cemc.uwaterloo.ca/contests/csimc

Educators! Looking to challenge your students’ math skills? Join the Canadian Senior & Intermediate Mathematics Contests (CSMC and CIMC)! 📚

Grades 9-12 & CÉGEP students can test their problem-solving prowess. Order now! #MathContest
https://t.co/hgae1vNxqN pic.twitter.com/PoeNkkqAhn

— CEMC (@UWaterlooCEMC) September 20, 2024

Video Links

Though I'm not a big fan of "keep, change, flip" I always appreciate how @Howie_Hua uses first principles to explain why it works
Curriculum Tags: All
https://x.com/howie_hua/status/1836928878486618372

The property a×1=a seems so basic but believe it or not, it helps explain why "keep change flip" works. Here's how: pic.twitter.com/FIIioXy67h

— Howie Hua (@howie_hua) September 20, 2024

Image Links

Makes sense to me :-)
Curriculum Tags: Gr8
https://x.com/howie_hua/status/1836573933421854907

Complimentary angles pic.twitter.com/DA0Tjj9q5N

— Howie Hua (@howie_hua) September 19, 2024

Math Links for Week Ending May 17, 2024

Featured Links

If you are into Building Thinking Classrooms then you might be interested in the fact that they have just redone their website. And if you head over there then you might want to start with the resource page
Curriculum Tags: All
https://www.buildingthinkingclassrooms.com/resources

The @BTCthinks team are excited to unveil the new https://t.co/B2nABK6QqI site. You'll find it full of new information on BTC, books, thinking tasks, research, events, consulting, merchandise and more! We hope the site is valuable to the #buildingthinkingclassrooms community. 1/2 pic.twitter.com/K2P7Er3uyg

— Peter Liljedahl (@pgliljedahl) May 15, 2024

Resource Links

Some fun with triangular numbers and visualizing them with @Desmos. Especially if you are introducing quadratic relations. 
Curriculum Tags: MPM2D
https://twitter.com/Desmos/status/1788205292791939202

Recursion lets us extend visual patterns like these “triangle numbers”, allowing us to define a function in terms of a previous term. What are you going to make next?
Explore the graph: https://t.co/uPcLG84L6j
Learn more about recursion: https://t.co/cBRP6ZBNUd pic.twitter.com/sjhAFhf8X7

— Desmos (@Desmos) May 8, 2024

A nice resource to visualize running probabilities
Curriculum Tags: MDM4U
https://twitter.com/jcponcemath/status/1791058715023720833

The law of large numbers states that the average result from a series of trials will converge to the expected value.@geogebra applet to explore the law of large numbers:https://t.co/R8fqVsIl5B#iteachmath #simulation pic.twitter.com/kXOsnbdoG6

— ∞ 𝕁uan ℂarlos (@jcponcemath) May 16, 2024

Here is a nice resource for understanding outliers on scatterplots
Curriculum Tags: MTH1W, MDM4U
https://twitter.com/geogebra/status/1791523353922277855

🧠👩‍🏫 GEOGEBRA RESOURCE! 👟📖

Try this FREE GeoGebra Exploration resource to experiment with how data points can affect the clusters in a scatter plot and table.
Check it out!https://t.co/DtGfyrZgyt#MTBoS #iteachmath #math pic.twitter.com/S796x3uBgD

— GeoGebra (@geogebra) May 17, 2024

Playing around with scatterplots dynamically to look at correlation
Curriculum Tags: MTH1W, MDM4U, MAP4C

Lo fácil que es hacer esto con @geogebra y lo que puede iluminar un concepto. https://t.co/qJIxm89EAt pic.twitter.com/37J6AEzmJU

— Alejandro Gallardo ۞ (@alegallardo28) May 17, 2024

Video Links

The power of doubling
Curriculum Tags: MPM2D, MBF3C, MAP4C

https://twitter.com/howie_hua/status/1789286317467341249

How many times do we need to fold a piece of printer paper in half so it is as thick as the distance between Earth and the moon? pic.twitter.com/EDZpU65gO5

— Howie Hua (@howie_hua) May 11, 2024

That famous math problem meme
Curriculum Tags: All
https://twitter.com/saravdwerf/status/1789382946840785000

Proof that math word problems happen in real life. There IS someone out there with a cart of watermelons….and it’s not a math teacher. 😂😂😂 #TikTok https://t.co/a1thIVHaTu

— Sara VanDerWerf (@saravdwerf) May 11, 2024

I like this because it gives some nice context for the difference of squares
Curriculum Tags: MPM2D
https://twitter.com/howie_hua/status/1790900918998929674

Can you mentally calculate 14×26? 35×45? 91×89? If not, see how difference of squares can help you. pic.twitter.com/TB2YwZHs6F

— Howie Hua (@howie_hua) May 16, 2024

Image Links

Are you introducing plotting on an xy plane then you might want to start with a graph like this to help get students into the meaning of the quadrants in a friendly way
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/infobeautiful/status/1788930750223438166

What's the best #dog breed, according to the data? The #dataviz dog-lovers have been waiting for: https://t.co/FvflKWXJhS pic.twitter.com/ooxFtYbxvg

— Information is Beautiful (@infobeautiful) May 10, 2024

This could be a good starter in your math class 
Curriculum Tags: All
https://twitter.com/j_lanier/status/1789233483732435037

Here are 12 dots on a 5x5 grid. No 4 of them make a square. But no matter where you add 1 more dot to this arrangement, a square gets made. (Check it!)

Can you place more than 12 dots on the grid and avoid making any squares?

If you're a teacher & this piques your curiosity... pic.twitter.com/8fKgzGKt2t

— Justin Lanier (@j_lanier) May 11, 2024

A probability question for you
Curriculum Tags: MDM4U
https://twitter.com/pickover/status/1790377113733800196

Mathematics.

Assume that Amy has a 20% chance of becoming pregnant after a romantic encounter (RE). How many REs would Amy need — to have a greater than 95% chance of becoming pregnant. pic.twitter.com/RS6CyclYhn

— Cliff Pickover (@pickover) May 14, 2024

Someone doesn't understand proportions
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1790680990576193943

Something that sounds sensational but is really normal: " so 25% of every dollar is at least 25 cents" https://t.co/cdfibt5cWd

— David Petro (@davidpetro314) May 15, 2024

Math Links for Week Ending Mar 15, 2024

Featured Links

I love thinking about other ways to grade student work. There are some great ideas here if you are looking for some change
Curriculum Tags: All
https://gradingforgrowth.com/p/20-small-starts-for-alternative-grading

Today at Grading For Growth, I give 20 ways to get started with alternative grading on a small scale. Some of these are simple shifts in approach, while some are more concrete. But they are all good for students!#alternativegrading #highereducationhttps://t.co/tCsnkwm4oQ

— Robert Talbert (@RobertTalbert) March 11, 2024

Resource Links

I feel like you could do a lot of fun things in just about any class with this resource. 
Curriculum Tags: All
https://www.eatmy.art/

Playing with https://t.co/hH68olMjFJ today in class. Super easy to make animated gif images. #ITeachMath pic.twitter.com/VLumeSpQfv

— Erick Lee HRCE Math (@TheErickLee) March 8, 2024

Some more Pi Day resources
Curriculum Tags: All

https://mathsedideas.blogspot.com/2018/02/on-pi-day.html

A collection of activities for #PiDay… π history. π formulae. π birthdays. π primes. π puns and jokes. π art. Fake proofs for π. Memorising π. Continued fractions for π. Pilish. The music of π. Plus links to film, audio, websites, and articles. And more… https://t.co/SysSa3AO6R

— Maths Ed (@MathsEdIdeas) March 11, 2024

https://static1.squarespace.com/static/5436e695e4b07f1e91b30155/t/5504cbf1e4b00ffe1406e552/1426377713470/why-pi-matters.pdf

Why Pi Matters (from @NewYorker in 2015)https://t.co/n4GRBlUfUx

PDF for non-subscribers: https://t.co/c05o0asfX1

— Steven Strogatz (@stevenstrogatz) March 14, 2024

https://www.desmos.com/geometry/nm34xeu8xk

Not like we need an excuse to open up the Desmos Geometry tool, but this Archimedes-inspired strategy for approximating pi is a pretty good one. Happy Pi Day!#piday #PiDay2024 #geometry #mathproof #mathteacher pic.twitter.com/QUVhCsq5wZ

— Desmos (@Desmos) March 14, 2024

A nice visual showing sinusoidal relations
Curriculum Tags: MCR3U, MCF3M

https://twitter.com/historyinmemes/status/1767287126629245082

How to explain the math in a simple way pic.twitter.com/Ch6LVtLzpG

— Historic Vids (@historyinmemes) March 11, 2024

I have my own list of Math based podcasts (here) but this is another one and I love the way that it is organized by topic. 
Curriculum Tags: All

https://mathsedideas.blogspot.com/p/mathematics-audio-documentaries.html

An updated catalogue of links to ≈ 400 mathsy radio and podcast programmes — to dip into, relax to, share, and enjoy. Including from @stevenstrogatz @FryRsquared @alexbellos @SLSingh @tomrocksmaths @d_spiegel and many more: https://t.co/ANOXtRBZ2i

— Maths Ed (@MathsEdIdeas) March 14, 2024

Video Links

Here's a fun little proof that you could do when talking about prime numbers
Curriculum Tags: MTH1W
https://twitter.com/howie_hua/status/1766452571760402904

Did you know all prime numbers are one away from a multiple of 6 (besides 2 and 3)? Here's how we know: pic.twitter.com/D88M5qPhKp

— Howie Hua (@howie_hua) March 9, 2024

A nice representation with the Olympics coming up
Curriculum Tags: Gr7, Gr8, MDM4U
https://twitter.com/jennalaib/status/1766634206694670345

Love this one! I'm wrapping around my head around the fact that it was 2:1 male to female when I was a kid! 🤯

Here's to it being 1:1, and maybe even 1:1:x in the future, to be more inclusive... https://t.co/QJUv1vCLYL

— Jenna Laib (@jennalaib) March 10, 2024

Here is a nice visual proof of the sum of squares 
Curriculum Tags: MCR3U
https://en.etudes.ru/models/sum-of-squares/

The Sum of Squares, with a geometric proof 🧱🧱🧱https://t.co/QLGWAHfjNw (by Mathematical Etudes)#math #science #iteachmath #mtbos #visualization #elearning #geometry pic.twitter.com/AKcIuWvzHi

— Tungsteno (@74WTungsteno) November 8, 2021

Image Links

I like this because you could solve it rather elegantly with algebraic manipulation or use a more brute force method by just evaluating the powers.
Curriculum Tags: MTH1W
https://twitter.com/mehrdadbas72335/status/1767120608284799103

Easy question for you...🔥🔥🔥.
Question:
Try to find the value of x?#mathe.#Maths.#Algebra.#Geometry.#Calculus.#ProblemSolving.#test.#Exams.#puzzle.#Science.#evaluation.#solve.#ریاضی.#ریاضیات. pic.twitter.com/cjFf9yldMt

— Mehrdad Basiry (@mehrdadbas72335) March 11, 2024

Perhaps writing this in a simpler form will help?

Curriculum Tags: MTH1W
https://twitter.com/mehrdadbas72335/status/1767473786075656683

Easy question for you...🔥🔥🔥.
Question:
Try to find the value of following expression?#mathe.#Maths.#Algebra.#Geometry.#Calculus.#ProblemSolving.#test.#Exams.#puzzle.#Science.#evaluation.#solve.#ریاضی.#ریاضیات. pic.twitter.com/eszuMYrRzb

— Mehrdad Basiry (@mehrdadbas72335) March 12, 2024

Throwing shade on the standard algorithm

Curriculum Tags: All
https://twitter.com/Mathgarden/status/1767164834540343342

pic.twitter.com/AbErJVB5u9

— Sunil Singh (@Mathgarden) March 11, 2024

Here is a great problem to use when applying circle theorems
Curriculum Tags: MTH1W
https://twitter.com/sonukg4india/status/1767406915251044827

#Puzzled pic.twitter.com/9JU1PWCTxW

— SKG (@sonukg4india) March 12, 2024

I make this joke all the time
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C, MAP4C

https://twitter.com/thescottbarber/status/1767740512017293512

Jesus teaching only in parabolas pic.twitter.com/b8Yty5VTVx

— Scott Barber (@thescottbarber) March 13, 2024

    

Math Links for Week Ending Dec 15, 2023

Featured Links

I became a Desmos Fellow in 2018 and it has been a great experience. I have made a lot of great friends and the resources have been great. You should apply to be a Desmos Fellow too and see what I mean.
Curriculum Tags: All
https://twitter.com/desmosclassroom/status/1734647447123623939

📣 Applications are now open for the next cohort of Desmos Classroom Fellows!

Whether you're a Desmos Classroom super user or a teacher eager to leverage Desmos Classroom technology in your classroom, apply now to join our math community: https://t.co/NtPRhypaMR pic.twitter.com/2LyylFe41V

— Desmos Classroom (@desmosclassroom) December 12, 2023

Resource Links

I always love to point out that this site exists, especially when new graphs are added
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U, MAP4C
https://twitter.com/jennalaib/status/1735033701719748870

Added a few #slowrevealgraphs!
- Breadwinners in the US, over the last 50 years
- Pet adoption
- Bullying at school
- Teen reading habits
- swears in Taylor Swift lyrics (@Jhovde2121)
...and maybe a few others that you missed!https://t.co/ozDA6cytjC

— Jenna Laib (@jennalaib) December 13, 2023

Video Links

Some combinatoric probability for you
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1733273306328080880

If you and your friend get called for jury duty with 98 other people, what's the probability both of you will serve on the jury of 12? pic.twitter.com/4ni2sW5pmc

— Howie Hua (@howie_hua) December 8, 2023

If you want a reason to use data, how about finding marathon cheaters
Curriculum Tags: MDM4U
https://www.youtube.com/watch?v=90gLynuxUwg

Image Links

I've said it before, I'm a sucker for square root simplification problems. 
Curriculum Tags: MPM2D
https://twitter.com/H0H0v/status/1733357704964444483

Solve for the problem pic.twitter.com/PbMdNWqhDN

— KHALID (@H0H0v) December 9, 2023

Math humour
Curriculum Tags: All
https://twitter.com/Rainmaker1973/status/1733820884920524811

This requires you to be a nerd, but yet... pic.twitter.com/beHoumdo2v

— Massimo (@Rainmaker1973) December 10, 2023

It would be cool to have this poster but follow the link to some others too
Curriculum Tags: All
https://math.chapman.edu/~jipsen/mathposters/

Most math posters only show approximations of these important numbers. Here are the exact values, if you can read them :-).

"How to print an infinite decimal expansion in a finite space."

By Peter Jipsen, https://t.co/NBh3Nv5NfP, cc by-nc-sa 3.0. pic.twitter.com/DVBxSTED0n

— Cliff Pickover (@pickover) December 10, 2023

Who doesn't like Elf on the Shelf knock offs?
Curriculum Tags: MPM2D, MCR3U, MCF3M, MBF3C
https://twitter.com/howie_hua/status/1734362750036681035   

Okay I made this yesterday and please tell me someone gets this lol

You heard of elf on the shelf but have you heard of... pic.twitter.com/nJpXnLDTA9

— Howie Hua (@howie_hua) December 12, 2023

Math Links for Week Ending Apr 14, 2023

Featured Links

I have been adding podcasts and recorded radio shows that feature math in a direct or indirect way for years to this page (seriously, for more than 15 years). This year, one of my sessions at OAME 2023 is on listening to Math based podcasts. I've added a few more and you can see my whole list here:
Curriculum Tags: All
http://ontariomath.blogspot.com/p/podcasts.html

[Page updated] - New podcasts added to my page on #math related podcast, including @debatemathpod @statsandstories and Carry the Twohttps://t.co/VMJB1Oko9v#MathChat #MTBoS #iTeachMath pic.twitter.com/J0KEWEAHza

— David Petro (@davidpetro314) April 9, 2023

Resource Links

You can always count on @DavidKButlerUoA for interesting resources. If you are at all into looking at statistics and data then I would not miss his set(s) of Data cards.
Curriculum Tags: Gr7, Gr8, MBF3C, MAP4C, MDM4U
https://twitter.com/DavidKButlerUoA/status/1645894205439610881

New improved Carnivorous Plant data cards. Enjoy!
(PDF printable and Excel data here: https://t.co/MKFUqZfVhE ) pic.twitter.com/c5av3FfdkL

— David Butler (@DavidKButlerUoA) April 11, 2023

Video Links

What a fun, non mathematical way to show that f(g(x)) does not equal g(f(x))
Curriculum Tags: MCV4U
https://twitter.com/TimBrzezinski/status/1643991740863627264

#RealLife non-math example that illustrates why function composition is not commutative. #MTBoS #ITeachMath pic.twitter.com/igWZyFx8Fl

— Tim Brzezinski (@TimBrzezinski) April 6, 2023

This demystifies why you get a positive when you divide two negatives. IE go back to first principals
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/howie_hua/status/1645944160640438272

How I would explain why a negative divided by a negative is a positive pic.twitter.com/1AFlRkhJGd

— Howie Hua (@howie_hua) April 12, 2023

It would be cool to have kids find these multiples on their own in Pascal's Triangle
Curriculum Tags: All
https://twitter.com/74WTungsteno/status/1645789158353551362

Multiples of a number in Pascal's Triangle 🔻🔻🔻https://t.co/QBR8Ur1Ygk#math #science #iteachmath #mtbos #visualization #elearning #algebra pic.twitter.com/g0X81ycVIy

— Tungsteno (@74WTungsteno) April 11, 2023

It's always cool when patterns appear where they, at first, don't seem to exist
Curriculum Tags: All
https://twitter.com/pickover/status/1646637677800833026

Viewing reality from different perspectives.

The hidden patterns and structure in the veils of our lives.

I've found this animation in ~12 Reddit groups from 5 years ago. Does anyone know the original source, so we can give credit? Example source: https://t.co/YPCdssPNLP pic.twitter.com/7FSZnoAjhP

— Cliff Pickover (@pickover) April 13, 2023

Image Links

This seems simple enough (in the set up) but it still makes you think about what happens in the long term
Curriculum Tags: MCV4U, MCR3U, MHF4U
https://twitter.com/jamestanton/status/1644652304501547010

[Classic:] Starting with 0, 1 each term of this sequence beyond the second is the arithmetic average of the two terms just before it. Does this sequence seem to approach a specific value in the long run?
(What if start with two arbitrary numbers a and b?) pic.twitter.com/WpJfCcS8Zr

— James Tanton (@jamestanton) April 8, 2023

  

Math Links for Week Ending Jan 27th, 2023

Featured Links 

It's no secret that I'm a fan of OAME and the annual OAME conference. This year's conference is the first face to face version since 2019 and will be held in Toronto. That being said, this is a preview of the featured and keynote speakers from day one. That's just a sampling of the speakers available but it at least gives you a taste. You can get more details at oame2023.ca and listen below:
Curriculum Tags: All
https://talks.oame.on.ca/season-5

[New Podcast] It's the #OAME2023 Day 1 preview. Featuring @marian_small @MathforLove @BecklesOctavia Lindsay Gold @HemaKhodai & @deborah_ball
Listen here:https://t.co/bJzj90sLs5

Check out all the conference info at https://t.co/lxlAc6GrgL#MathChat #MTBoS #iTeachMath pic.twitter.com/tyPwokP460

— OAMEtalks (@OAMEtalks) January 23, 2023

Resource Links 

I always appreciate the work that @MathEqualsLove puts in to take what could be a boring math task and spice it up. 
Curriculum Tags: MCF3M, MCR3U
https://mathequalslove.net/odd-one-out-coterminal-angles-activity/

Odd One Out Challenge today in pre-calc to practice identifying coterminal angles. https://t.co/aP7uInDM1V #mtbos #iteachmath #teach180 pic.twitter.com/S5DeP5wUaw

— Sarah Carter (@mathequalslove) January 26, 2023

A new free activity from @DesmosClassroom dealing with linear and exponential functions
Curriculum Tags: MCR3U, MHF4U, MAP4C
https://teacher.desmos.com/activitybuilder/custom/62d836685867b605249a320d?collections=61bcc95700581818dff1d4d7,61bcca11ed341144696b0236

Did you sea our newest free lesson from Desmos Math 6–A1? 🐟🪸

Dive deep into linear and exponential functions with this under-the-sea Algebra 1 lesson. Try it now 👇https://t.co/l5qqSr63jA#MTBoS #iteachmath pic.twitter.com/pHoe3VnQ13

— Desmos Classroom (@desmosclassroom) January 27, 2023

This is the tip of the iceberg with something as big as the World Cup. So start with probability and notice and wonder and hit the ground running. 
Curriculum Tags: Gr7, Gr8

https://blog.savvas.com/make-it-a-goal-to-leverage-current-events-in-your-math-class/

"As a mathematics teacher who enjoys soccer, I couldn’t help but notice some of the math surrounding the World Cup." Read the latest blog from @MrValencia24 on leveraging current events in your math classroom: https://t.co/otzfMSP14c#edchat #MathEd #iteachmath #mathplay

— Savvas Learning (@SavvasLearning) January 27, 2023

Video Links 

If you are ever talking about infinity or multiple infinities or the size of infinity or number densities then you might like this video from @StandupMaths
Curriculum Tags: MTH1W
https://www.youtube.com/watch?v=M4f_D17zIBw

Image Links 

I don't know why I am partial to these embedded radical simplifications. 
Curriculum Tags: MTH1W
https://twitter.com/KH2020H0/status/1618192957517238272

#math 🧐 pic.twitter.com/BykfYoeYAn

— KHALID (@KH2020H0) January 25, 2023

    

Math Links for Week Ending Jan 20, 2023

Featured Links

I can't help but be fascinated by what ChatGPT can do. And there are definitely people who think it's the end of everything. But like all AI, there are good points and bad points. But I think regardless of your opinion as a teacher, the sky isn't falling but if you don't start to change some of what you do and value in class, you won't be doing your skills any favours. In this piece, @MPershan does a pretty good job of laying things out. 
Curriculum Tags: All
https://pershmail.substack.com/p/chatbots-mostly-wont-change-education

Chatbots are not going to be revolutionary for teachers or schools or learning. But they might prompt changes in how we do things.https://t.co/8k04UV21qn

— Michael Pershan (@mpershan) January 18, 2023

Resource Links

Though the math topic may be patterning and algebra, the questions about teacher goals are good to ask
Curriculum Tags: All
https://twitter.com/JRappaport27/status/1615414368682004480

Then we follow up with this question. pic.twitter.com/kxVSLbqbtt

— Jordan Rappaport (@JRappaport27) January 17, 2023

Looking for resources on the distance between points? Check this out. Everything from a paper and pencil version to dynamic with video. 
Curriculum Tags: MPM2D
https://docs.google.com/document/d/1GxCAzRsYg_ly_NcyEdtWLLxK-g6id9WkTBF4xCNQsHA/edit

Distance in the coordinate plane: An active, conceptual approach. 🙂 Here are several ready-to-use discovery lesson & formative assessment resources you can use to engage your Ss! 👉 https://t.co/WHrHPHPNYD & https://t.co/N9sN2ireD3 @geogebra #MTBoS #ITeachMath #geometry #algebra pic.twitter.com/hB7u200jr9

— Tim Brzezinski (@TimBrzezinski) January 18, 2023

I'm actually not sure what I would do with this but it might fit as some light hearted fun when you introduce Pythagorean Theorem, specifically, if you do something where you start with the area model with squares and expand to other regular shapes like this. 
Curriculum Tags: Gr8, MTH1W

https://twitter.com/dment37/status/1616029503490494465

Pythagorean kittens :=) @geogebra The pythagorean theorem is verified with all kinds of surfaces .No !https://t.co/tF3n227VgB#geogebra #math #science #iteachmath #mtbos #visualization #elearning @geometry @bancoche#Physics pic.twitter.com/FHLWtUjQ0m

— Daniel Mentrard (@dment37) January 19, 2023

Opinion Links

The general public probably thinks that all you need to know to be an effective math teacher is how to do math. But the reality is that it is so much more. In this post @nomad_penguin lays it all out

Curriculum Tags: All
https://amiealbrecht.com/2023/01/18/unpacking-the-mathematical-demands-of-teaching/

NEW Blog Post: ‘Unpacking the mathematical demands of teaching’

As promised, this post digs into another classic paper that articulates the different forms of knowledge for mathematics. (I also couldn't resist a few opinionated words the end!)https://t.co/oVyOh5Rnl9#MTBoS

— Amie Albrecht (@nomad_penguin) January 18, 2023

Video Links

Some tips on dynamic proportional reasoning using double number lines with #PolyPad 
Curriculum Tags: Gr7, Gr8, MTH1W
https://www.youtube.com/watch?v=wlm4BXyAYuU

Always a good demonstration of Pythagorean Theorem
Curriculum Tags: Gr8, MTH1W
https://twitter.com/mathladyhazel/status/1615393739169480704

Visualizing the Pythagorean theorem! I want this toy right now!😍 pic.twitter.com/9e0CiE2rO5

— Math Lady Hazel 🇦🇷 (@mathladyhazel) January 17, 2023

Image Links

Data visualizations are supposed to make things more clear and visible. Asking the question that @JennaLaib asks is a good one in this situation. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/jennalaib/status/1616150610968969245

I love making #slowrevealgraphs from Statista's data visualizations. But this one... did it need to be a bar graph? Some of these bars are 1/10 of a percent different from one another. My eyes aren't that discerning.

How would you have represented this data? #dataliteracy pic.twitter.com/V7o76q80gc

— Jenna Laib (@jennalaib) January 19, 2023

I love this connection to the number 37. So surprising, or is it?
Curriculum Tags: All
https://twitter.com/pickover/status/1615458406051061760

Mathematics.

The numbers 111, 222, 333, 444, 555, 666, 777, 888, and 999 are all evenly divisible by 37, leaving no remainder. pic.twitter.com/H5H6Lsgi5C

— Cliff Pickover (@pickover) January 17, 2023