Math Links for Week Ending Aug 29, 2025

Featured Links

Some resources for teachers in the GTA but this list is useful for any teacher
Curriculum Tags; All
https://bsky.app/profile/calarmstrong.bsky.social/post/3lxf6z4dxbc2v
https://bsky.app/profile/calarmstrong.bsky.social/post/3lxf5whojwc2v

"Teacher as artisan" @ "Count Me In" from @UofTMath #onted #mtbos HT @OAMElearns #mathed

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— Cal Armstrong (@calarmstrong.bsky.social) August 27, 2025 at 10:02 AM

#onted #mtbos folks Lots of options for outreach from @UofT Math Dept. Check out ways for you and your students to grow! HT @OAMElearns #mathed

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— Cal Armstrong (@calarmstrong.bsky.social) August 27, 2025 at 9:43 AM

Resource Links

Having students actually write about topics in math class can be useful
Curriculum Tags: All
https://www.edutopia.org/article/short-writing-task-elementary-math

Check out 3 focused writing activities that can help students build confidence in their math skills *and* bond with their classmates! 👀 #MathSky #ITeachMath #ElementaryTeacher #EduSky

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— Edutopia (@edutopia.org) August 29, 2025 at 7:37 AM

Video Links

Mathematical dates are always fun
Curriculum Tags: Gr8, MTH1W, MFM2P, MPM2D
https://x.com/howie_hua/status/1960814706639454458

We are a month away from one of the coolest mathematical dates of our lifetime! pic.twitter.com/HEGHBwGomC

— Howie Hua (@howie_hua) August 27, 2025

Image Links

Every math teacher needs this cup
Curriculum Tags: All
https://bsky.app/profile/lindsaykittens.bsky.social/post/3lx3tku6nes2z

I’m making the change from primary teaching to secondary maths. Any recommendations of maths teachers to follow would be welcome. Thank you. #maths #newdirection

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— Lindsay Kittens (@lindsaykittens.bsky.social) August 23, 2025 at 4:44 PM

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 June 20, 2025

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I am a big fan of dynamic geometry. Whether it be Geometer's Sketchpad, Geogebra or Desmos. So I always appreciate when someone helps students work with any one of those tools. I also have a series of videos that walk you through some constructions. If you don't know a construction is when you build a geometric item that always keeps its properties (like a square). That is when you drag any of the points, it may change size or orientation but not loose the properties of that geometric figure. You can see those here
Curriculum Tags: Gr7, Gr8, MTH1W
https://fawnnguyen.substack.com/p/first-desmos-geometry-lesson

Resource Links

Quadratic formula Bingo
Curriculum Tags: MPM2D, MFM2P, MCR3U, MBF3C, MCF3M
https://mathequalslove.net/quadratic-formula-bingo-game/

NEW Quadratic Formula Bingo Game Activity (features rational, irrational, and imaginary solutions) https://t.co/3GSPMq93bv#mtbos #iteachmath pic.twitter.com/Vzw3aqjoxL

— Sarah Carter (@mathequalslove) June 19, 2025

Is everything we've been saying about the fairness of coins been (partially) wrong? Find out here:
Curriculum Tags: All

https://www.scientificamerican.com/article/scientists-destroy-illusion-that-coin-toss-flips-are-50-50/

Real coin flips are ~49-51 not 50-50 www.scientificamerican.com/article/scie... But you can guarantee equal probability with a simple trick! Flip 2x in a row starting with the same side up. HT->call it H TH->call it T HH,TT->try again (due to von Neumann en.wikipedia.org/wiki/Randomn...) #🧮 🧪 1/4

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— Joshua Grochow (@joshuagrochow.bsky.social) June 20, 2025 at 3:58 PM

Video Links

I never liked the idea of memorizing math facts. I have always thought it was better to internalize them and if you are looking for a good way to do that, try this out
Curriculum Tags: All
https://x.com/howie_hua/status/1934960810138259951

Be stronger with math facts by practicing this: pic.twitter.com/bBL0Tm7T7Y

— Howie Hua (@howie_hua) June 17, 2025

Geometry can definitely be beautiful 
Curriculum Tags: All
https://x.com/pickover/status/1935440630265602257

Mathematics.

Every minute, draw a line from the end of the minute hand, to the end of the hour hand. A wonderful pattern emerges.

By Matt Henderson, @matthen2, used with permission. [math, maths] pic.twitter.com/vj9RdMtLNS

— Cliff Pickover (@pickover) June 18, 2025

Image Links

This week's prompt for #MathPhoto25
Curriculum Tags: All
https://bsky.app/profile/theericklee.bsky.social/post/3lrxp2r4kbk2z

Week 3 of #MathPhoto25 has arrived. Where do you see lines meeting to form corners and #angles? #ITeachMath #MathsToday

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— Erick Lee (@theericklee.bsky.social) June 19, 2025 at 10:06 AM

More power to ya
Curriculum Tags: Gr8, MTH1W
https://bsky.app/profile/curiouspolymath.bsky.social/post/3ls22gniblk2w

#mathsky

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— Pete Wung The Curious Polymath (@curiouspolymath.bsky.social) June 20, 2025 at 8:35 AM

Math Links for Week Ending Apr 18, 2025

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It was always one of my favourite things to find something out in the wild that would connect to the curriculum I'm teaching and make students say "hmm". Make sure you check out the comments for the answer
Curriculum Tags: MPM2D, MFM2P
https://x.com/aledaklassen/status/1911424118336999774

Is there a place for this in #mth1w?https://t.co/YKQf409CAL

And... Is this true?! I don't drink coffee. #onted

— Aleda Klassen (@aledaklassen) April 13, 2025

Resource Links

I think it's important to find things that are thing that kids might be thinking of and making money on the Internet is definitely one of them.
Curriculum Tags: Gr7, Gr8, MTH1W
https://robertkaplinsky.com/work/how-much-money-do-you-earn-for-1000000-streams-on-spotify/

Looking for a real world context for multiplying and dividing decimals? Check out my problem-based lesson called How Much Money Do You Earn For 1,000,000 Streams On Spotify?
https://t.co/BULChRpJe8 pic.twitter.com/DvZqlCImV5

— Robert Kaplinsky (@robertkaplinsky) April 11, 2025

Video Links

I love a good sum of series but I also like the explanation of the conditions when this sum doesn't have an answer
Curriculum Tags: MCR3U
https://x.com/howie_hua/status/1913005710172164429

This pattern with infinite series is not a coincidence.

Also, 1+2+4+8+...=-1???

(I don't have a good title for this one but I think it's good lol) pic.twitter.com/ByLff6nErK

— Howie Hua (@howie_hua) April 17, 2025

The beauty of mathematics 
Curriculum Tags: All
https://x.com/mathladyhazel/status/1911616202448785610

Each line produces two new lines at an angle. When two collide they don't produce new ones. The result was a pleasant surprise. [https://t.co/PuUxRQRECR] pic.twitter.com/GTvb8mwpum

— Math Lady Hazel 🇦🇷 (@mathladyhazel) April 14, 2025

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I like this kind of question because it seems harder than it is but with a little care, it should be do able. Can you guess why this was published on the 18th?
Curriculum Tags: Gr8, MTH1W
https://bsky.app/profile/percybuttons3.bsky.social/post/3ln2wzqrjkq2f

Math Links for Week Ending Mar. 21st, 2025

Featured Links

The season finale of Severance went live tonight. If you are a fan then you will like this @Desmos creation
Curriculum Tags: All
https://x.com/Desmos/status/1902737247717187868

Your outie makes art...in Desmos.#severance #lumon pic.twitter.com/qYeCbbp25w

— Desmos (@Desmos) March 20, 2025

Resource Links

It's always good to see some good demos of how to use dynamic geometry software. In this case you have some choice. 
Curriculum Tags: MTH1W
https://karendcampe.wordpress.com/2025/03/16/go-for-geometry-5/

New blog post! "Marvelous Midsegments" Go For Geometry! Episode 5.
Activities exploring on all technology platforms: Desmos, GeoGebra & TI calculators.
Taking the scenic route 😉#geometry #MTBoS #iTeachMath #T3Learnshttps://t.co/O2hFX9YiAl

— Karen Campe (@KarenCampe) March 17, 2025

Some new ways to show points with @Desmos
Curriculum Tags: All
https://x.com/Desmos/status/1902088563707277475

So...what's your point?

Customize your points and text labels with new shapes and outline settings. Check out an example graph here: https://t.co/zaJpjSsBOx#mtbos #iteachmath #desmostips pic.twitter.com/3X05h5oii7

— Desmos (@Desmos) March 18, 2025

Video Links

I also remember when I first made this connection. 
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C
https://x.com/howie_hua/status/1902521844273705127

In high school, I didn't realize completing the square LITERALLY means to complete the square. Here's what I mean: pic.twitter.com/Sq4lT5KIoN

— Howie Hua (@howie_hua) March 20, 2025

Making Logarithmic properties make sense.
Curriculum Tags: MHF4U

https://x.com/howie_hua/status/1902890459774783796

In high school, I just memorized these logarithm rules for products and quotients. If you're curious why they work, here's why: pic.twitter.com/VyrZXT91n8

— Howie Hua (@howie_hua) March 21, 2025

I have seen this in so many forms but I don't think I've seen this version
Curriculum Tags: MCR3U, MHF4U
https://x.com/mathladyhazel/status/1902562029245726971

When a math person dances. pic.twitter.com/U1uF6Svhf0

— Math Lady Hazel 🇦🇷 (@mathladyhazel) March 20, 2025

Image Links

This might be a good example of an outlier
Curriculum Tags: MDM4U
https://bsky.app/profile/infobeautiful.bsky.social/post/3lkoul42ba424

Woah Australia - Global cancer rates in people under 50 Source: World Health Org

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— Information is Beautiful (@infobeautiful.bsky.social) March 18, 2025 at 7:55 PM

Math Links for Week Ending Dec 27, 2024

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Given that next year, 2025, is the first perfect square year in a while, I think you may want to focus on the calculation 452 this coming year in as many ways as you can think of. 
Curriculum Tags: All
https://bsky.app/profile/geometiles.bsky.social/post/3lea5s4pxi22x

We’re about to embark on a SQUARE YEAR! #mathsky #iteachmath

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— Geometiles (@geometiles.bsky.social) December 26, 2024 at 1:58 PM

Resource Links

A less tedious way to look at factor trees
Curriculum Tags: Gr7, Gr8
https://mathequalslove.net/2025-factor-tree-puzzle/

Let's continue the countdown to 2025. Today's 2025 Factor Tree Puzzle was inspired by Dr. Harold Reiter who presented on factor tree puzzles at a math teachers' circle workshop I attended. mathequalslove.net/2025-factor-... #mtbos #iteachmath #puzzlingclassroom #mathsky #edusky

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— Sarah Carter (@mathequalslove.bsky.social) December 27, 2024 at 10:14 AM

Video Links

Hidden sinusoidal functions in nature
Curriculum Tags: MCR3U, MCF3M
https://www.reddit.com/r/oddlysatisfying/comments/28yiqk/the_sequence_of_the_sun/?rdt=53283

f(x) = sun(x). The sequence of the sun. [https://t.co/uuBMUJt5y6] pic.twitter.com/z046Gai04r

— Math Lady Hazel 🇦🇷 (@mathladyhazel) December 24, 2024

I like this because it focusses on why, not on memorizing some sort of formula
Curriculum Tags: MPM2D
https://bsky.app/profile/tbrzezinski.bsky.social/post/3ldovqhadts2i

Distance between 2 points in the coordinate plane: Active exploration for a thinking classroom. To access the exploration, see the link in the description of the featured video here: youtube.com/shorts/pfucM.... #MTBoS #ITeachMath #math #mathhelp #edusky

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— Tim Brzezinski (@tbrzezinski.bsky.social) December 19, 2024 at 5:19 PM

Image Links

I don't like this sort of thing as a memory aid, however, I think it would be great for kids to come up with it on their own or prove that it's true
Curriculum Tags:
MPM2D, MFM2P, MCR3U, MCF3M, MBF3C
https://x.com/GeometryPuzzles/status/1872106172423274843

Easy to remember trigonometric ratios pic.twitter.com/hCahSOFlLb

— Math Lover (@GeometryPuzzles) December 26, 2024

A few more "Elf on the Shelf" parodies from @Howie_Hua
Curriculum Tags: All
https://x.com/howie_hua/status/1871646638818939170
https://bsky.app/profile/howiehua.bsky.social/post/3le5q2kbr522q

You've heard of elf on the shelf, now get ready for pic.twitter.com/fMfem9qgBO

— Howie Hua (@howie_hua) December 24, 2024

Sorry, one more haha You've heard of elf on the shelf but have you heard of #math #ITeachMath #EduSky

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— Howie Hua (@howiehua.bsky.social) December 25, 2024 at 2:47 PM

Something for your Calculus class
Curriclum Tags: MCV4U
https://x.com/memecrashes/status/1871359192575160440

pic.twitter.com/8xNBT95iW2

— A meme page to check every time MatLab crashes (@memecrashes) December 24, 2024

That classic order of operations internet meme as a Christmas meme
Curriculum Tags: MTH1W
https://x.com/pickover/status/1871762165021151691

This is a math meme by @howie_hua, Used with permission.

He writes: "Be on Santa's nice list by simply conveying what you mean mathematically clearly so we can stop having these PEMDAS arguments." pic.twitter.com/IjWZDQCYr5

— Cliff Pickover (@pickover) December 25, 2024

Something to use as a starter when dealing with Order of Operations
Curriculum Tags: All
https://bsky.app/profile/bot.cowtools.org/post/3le2fzrs6sh2v

“Yes, yes, I know that, Sidney—everybody knows that! … But look: Four wrongs squared, minus two wrongs to the fourth power, divided by this formula, do make a right.”

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— THE FAR SIDE DAILY (@bot.cowtools.org) December 24, 2024 at 7:10 AM

Math Links for Week Ending Nov 15, 2024

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I have featured this problem before but I like when teachers talk about problems that give them experiences like this. 
Curriculum Tags: All
https://www.aliciaburdess.com/post/the-most-beautiful-experience

New blog post if anyone wants to read about my most favourite math problem with forever thanks to @Jason_To and @msbjacobs https://t.co/t9UoDq2HAg #mtBos #iteachmath

— Alicia Burdess (@BurdessAlicia) November 15, 2024

Resource Links

You could connect this pattern block puzzle interactive from @DPScher to proportional reasoning and fractions 
Curriculum Tags: Gr7, Gr8
https://www.sineofthetimes.org/pattern-block-puzzles/

Video Links

I think this is a really neat problem for dealing with rates. Especially because it can be solved with many methods. 
Curriculum Tags: Gr8, MTH1W
https://x.com/howie_hua/status/1856011483412570328

For today's Mental Math Monday, how would you mentally calculate which is faster?

20 miles in 30 minutes or 25 miles in 35 minutes pic.twitter.com/Cn0ZaFDVjc

— Howie Hua (@howie_hua) November 11, 2024

I appreciate how he talks about those simple properties 
Curriculum Tags: All
https://x.com/howie_hua/status/1855330539475009856

Explaining the Zero Product Property pic.twitter.com/zYGBMziM7E

— Howie Hua (@howie_hua) November 9, 2024

I think this might be useful when talking about number systems in MTH1W
Curriculum Tags: MTH1W
https://youtu.be/OEGGz1sCS5w?si=c6ikYumDgSQ3By8d

Image Links

I'm not necessarily a fan of Taylor Swift but I recognize her talent. So this series of images might go well in your math classes
Curriculum Tags: MCR3U, MHF4U
https://x.com/Anthony_Bonato/status/1857074773332766779

Taylor Swift is giving six sold-out concerts in my hometown of Toronto starting tonight. In her honor, here is a thread of her as functions

y = x pic.twitter.com/aAlbtP39Fw

— Anthony Bonato (@Anthony_Bonato) November 14, 2024

Which relates to you?
Curriculum Tags: MCR3U, MHF4U
https://x.com/pickover/status/1856138125745008994

Mathematics Love Stories.

By theroundpanda, Source: https://t.co/ZH4eI0IGC0 pic.twitter.com/MnNThVRkyY

— Cliff Pickover (@pickover) November 12, 2024

You can solve this with systems of equations or logic
Curriculum Tags: MPM2D, MFM2P
https://x.com/Rainmaker1973/status/1855246463351009458

Can you find the height of the glass? pic.twitter.com/oHKUQc9jcs

— Massimo (@Rainmaker1973) November 9, 2024

Math Links for Week Ending Oct 18th, 2024

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I always used to start my lesson on squaring binomials with this but extended it to the form (n + a)² = n² + 2na + a² and would start by asking kids for whole numbers close to 50 and I would square them in my head before looking at the algebra that showed why it worked.
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C
https://x.com/howie_hua/status/1845116066386804979

If you know one perfect square, here's how you can mentally calculate the next perfect square: pic.twitter.com/ugD9qCOfb2

— Howie Hua (@howie_hua) October 12, 2024

Resource Links

I appreciate that @JennaLaib continues to add to her collection of slow reveal graphs and I also like the reminder that we shouldn't steer away from controversial topics. Check out some of the new graphs including the one on the correlation between gun deaths and gun laws. 
Curriculum Tags: MDM4U, MAP4C
https://slowrevealgraphs.com/

Video Links

I'm a big fan of quick dynamic student explorations, especially in geometry
Curriculum Tags: Gr7, Gr8, MTH1W
https://x.com/TimBrzezinski/status/1846846388207865990

Transversal cuts parallel lines — Quick student exploration: https://t.co/nPtWIxvdY6 @geogebra #MTBoS #ITeachMath pic.twitter.com/G5zBXcnY0I

— Tim Brzezinski (@TimBrzezinski) October 17, 2024

Image Links

If you are playing with prime numbers then this is neat. 561 is a not a prime number but by over 100 different prime tests it comes up as prime. 
Curriculum Tags: MTH1W
https://findthefactors.com/2015/07/23/561-quick-prime-number-tests/

Mathematics.

"561" is an interesting number. It gives a "false positive" to these 102 prime-number tests: https://t.co/35N3bE1DSL pic.twitter.com/FMet8xJYT6

— Cliff Pickover (@pickover) October 17, 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 Mar 8th, 2024

Featured Links

My comment about this is that this is now the nail in the coffin for traditional teaching (just telling kids stuff)
Curriculum Tags: All
https://twitter.com/ddmeyer/status/1765485851851538854

Here is an interaction I just had with a chatbot. If this was a teacher you were coaching, what would be your feedback? pic.twitter.com/ogSc0K7350

— Dan Meyer (@ddmeyer) March 6, 2024

Resource Links

I made this investigation to look at various circle theorems. However, I made two versions. One that requires much more construction and one that has far less (so it takes less time). Get them both at the link below:
Curriculum Tags: MTH1W
https://engaging-math.blogspot.com/p/desmos-activities_10.html

[New @Desmos Activity] Students Investigate circle theorems using the short version (minimal construction) or the long version (more construction) of this @DesmosClassroom activity https://t.co/JUNFclWxKi#MathChat #MTBoS #iTeachMath #MTH1W pic.twitter.com/QSgmabGist

— David Petro (@davidpetro314) March 8, 2024

Here is a nice set of dynamic visualizations for Circle theorems
Curriculum Tags: MTH1W
https://twitter.com/dment37/status/1765661861112938843

Circle theorems
Visualization |Animation | Interactive applet@geogebrahttps://t.co/s8R8SUoBzg#geogebra #math #science #iteachmath #mtbos #visualization #elearning @bancoche #Physics pic.twitter.com/SR2DoQkCwW

— Daniel Mentrard (@dment37) March 7, 2024

Do you want a reason to look at the distance formula on the coordinate plane? Then look no further
Curriculum Tags: MPM2D, MCR3U, MCF3M
https://robertkaplinsky.com/work/toys-r-us/

Sadly, there are no longer Toys 'R Us stores, but the context remains. How does a computer know how far away a store is away from you? It's similar to finding distance on a coordinate plane. https://t.co/t0jmdqBNzL pic.twitter.com/5U8gSszzs8

— Robert Kaplinsky (@robertkaplinsky) March 1, 2024

Thanks @JamesTanton for sharing this free resource. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/jamestanton/status/1764025344045019377

A draft of Chapter 3 of COLLEGE ALGEBRA FOR HUMANS is done. (Here are chapters 1, 2, and 3.) https://t.co/gPEvhQgZsc
I am rewriting and tightening up all my algebra notes and thoughts into one tome. I think I properly tightened up making sense of the AREA MODEL for arithmetic… pic.twitter.com/eMnp2N3n39

— James Tanton (@jamestanton) March 2, 2024

It's always nice to have extra problems for your Thinking Classrooms
Curriculum Tags: All
https://twitter.com/MathforLove/status/1764682957351231830

One of my favorites!

Here’s a fun extension of that problem - https://t.co/DclJ9GT5t9

— Dan Finkel (@MathforLove) March 4, 2024

Need a resource on Conics?
Curriculum Tags: MCR3U
https://twitter.com/MathigonOrg/status/1764667238815047690

Where do circles, ellipses, hyperbolas, and parabolas like to hang out in the summer?
Coney Island! You can make many shapes by pointing a light onto a flat surface. They might look quite different but have many properties in common. Learn more at https://t.co/zGPijgDfnx pic.twitter.com/dvR3vIOT2D

— Mathigon (@MathigonOrg) March 4, 2024

Perfect if you are dealing with your students learning about finding sidelengths with trig ratios. 
Curriculum Tags: MPM2D, MFM2P, MBF3C
https://twitter.com/TimBrzezinski/status/1764976336521527590

Here, a quick journey at my attempt to thin slice a conceptual exploration where Ss use trig ratios to solve for unknown sides of right triangles: https://t.co/iwxGfAUDcs @pgliljedahl #MTBoS #ITeachMath @thinkingclassrm @geogebra pic.twitter.com/1s4V7K587Y

— Tim Brzezinski (@TimBrzezinski) March 5, 2024

The thing I like most about this is the fact that it shows that, for the most part, effective teaching has bits of all the researched based ideas in proportions based on you. And those proportions vary from person to person when it comes to what is effective. But regardless I like @Jason_To's even keel treatment of this.
Curriculum Tags: All

https://twitter.com/Jason_To/status/1764631181734076612

Many pro-direct instruction folks are using a recent article from BNN as evidence against inquiry-based learning, thinking classrooms, etc.

I respect these people as educators who, like me, want what's best for students.

But, let's dig into what this study actually tells us. https://t.co/m9EY14Rbw0

— Jason To | 杜澤信 (@Jason_To) March 4, 2024

Get ready for PiDay with my collected Pi resources
Curriculum Tags: All
https://ca.pinterest.com/davidpetro314/pi-day/

Need some #PiDay resources?

Here is my collection including the hidden reference to Pi in the @RollingStones logohttps://t.co/PPVZPnsta8#MathChat #MTBoS #iTeachMath pic.twitter.com/fU1OHkMOKd

— David Petro (@davidpetro314) March 8, 2024

Video/Audio Links

I maybe a Desmos boy now but I used to be a TI boy so I still appreciate tips like this
Curriculum Tags: All
https://twitter.com/TICalculators/status/1763674911896183231

😮 Bet you didn't know this one. Split Screen?! 🤯🤯🤯#Iteachmath #math #teachertwitter #tips #mathnerd #mathstudent pic.twitter.com/Ec2ciacGXZ

— Texas Instruments Education (@TICalculators) March 1, 2024

Some Pi Day podcast stories
Curriculum Tags: All
https://twitter.com/storycollider/status/1765678904537149822

In honor of #PiDay, tomorrow's episode @DarthScience & @professorteds whisk you away on a journey filled with math and pastry. No matter if you're calculating circumference or slicing into a sweet treat, there's always a story to be savored. Listen wherever you get your podcasts! pic.twitter.com/G7351sfdgV

— The Story Collider (@storycollider) March 7, 2024

I'm a big fan of using zeros to subtract with integers
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/howie_hua/status/1765892156873662575

We don't always have to rely on "two negatives make a positive" when subtracting negatives. Here's another way to think about it. pic.twitter.com/FU84rlO4RO

— Howie Hua (@howie_hua) March 8, 2024

Image Links

Here is a grab from their more interactive mathematician resource 
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1763580073800577495

Next Friday is International Women's Day and is a good day to explore our all-female version of our timeline of mathematics. Can you find the mathematician with an Erdős number of 1? Download at https://t.co/VZjByDDSpO pic.twitter.com/9mwgivSuQB

— Mathigon (@MathigonOrg) March 1, 2024

How could you do on this?

Curriculum Tags: All
https://twitter.com/Anthony_Bonato/status/1764641712247394344

How would you fare in this Harvard math entrance exam? The exam was given in 1869, so no calculators allowed! pic.twitter.com/fCycZk1QrC

— Anthony Bonato (@Anthony_Bonato) March 4, 2024

Some nice proportional reasoning here
Curriculum Tags: MTH1W
https://twitter.com/gunsnrosesgirl3/status/1765471306764427691

What do you think? pic.twitter.com/kFoP8M5n41

— Science girl (@gunsnrosesgirl3) March 6, 2024

Even if you didn't make a slow reveal graph out of this, I think it would still be a good discussion with students about how long they take their showers. 
Curriculum Tags: MDM4U
https://twitter.com/davidpetro314/status/1766070035779391750

Hey @jennalaib this looks like a great candidate for a slow reveal graph https://t.co/JByZBUNYhi

— David Petro (@davidpetro314) March 8, 2024

    

Math Links for Week Ending Feb 9, 2024

Featured Links

It's not often I see some property I haven't seen before but given the amount of stuff that @TimBrzezinski puts out, it's not suprising that he shows me something new. 
Curriculum Tags: MTH1W
https://twitter.com/TimBrzezinski/status/1755201259408118041

⭕️ & equilateral triangle phenomenon https://t.co/Dj6ANYbo7M @geogebra @gogeometry #MTBoS #ITeachMath pic.twitter.com/I3ph3aiKwo

— Tim Brzezinski (@TimBrzezinski) February 7, 2024

Resource Links

Who doesn't need to learn about transcendental numbers
Curriculum Tags: MHF4U
https://karendcampe.wordpress.com/2024/02/07/exploring-e/

Happy e day! (2.7)

New blog post: "Exploring e" with some ideas for learning about the Euler number in math class. #MTBoS #iTeachMath #T3Learns #calculushttps://t.co/FGjtGezqrd

— Karen Campe (@KarenCampe) February 7, 2024

Where do you need math in everyday life?
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1754520352208679407

Mathematics has applications across so many parts of everyday life - from weather prediction to bridge design, crowd control to music shuffling, and fraud detection, to name a few. Explore many more interesting examples at https://t.co/R1xGBJ8WPN pic.twitter.com/Mjc7hiyfuB

— Mathigon (@MathigonOrg) February 5, 2024

Do you need to find a prime number? How about this method?
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1754882734411948267

The Sieve of Eratosthenes is a simple method for finding prime numbers: you highlight the next available number and then cross out all of its multiples. How many primes are there less than 100? Try for yourself at https://t.co/Mr65qdpphj pic.twitter.com/qi4UDzE5zq

— Mathigon (@MathigonOrg) February 6, 2024

Video Links

Have you ever thought of what you could do if you could break an algebra tile?
Curriculum Tags: MPM2D, MFM2P
https://twitter.com/TimBrzezinski/status/1754120652020212228

Completing the square in Polypad : Even when the B coefficient is ODD @MathigonOrg @desmosclassroom @Amplify #MTBoS #ITeachMath pic.twitter.com/q48uAooh0H

— Tim Brzezinski (@TimBrzezinski) February 4, 2024

You might have seen the rectangle version of this but how about the triangle version?
Curriculum Tags: Gr8

https://twitter.com/TimBrzezinski/status/1754258083369341387

Pushing the boundaries with circles in @MathigonOrg #Polypad: https://t.co/TCowI1LLz7 @desmosclassroom @Amplify #MTBoS #ITeachMath pic.twitter.com/XVaw0yFY0Y

— Tim Brzezinski (@TimBrzezinski) February 4, 2024

Students often struggle with combinatorics, so it is always good when something can be explained clearly
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1755744864757862570

Have you ever wondered what's happening in the permutation and combination formulas? Here's how we can think about them: pic.twitter.com/LzQklkmSle

— Howie Hua (@howie_hua) February 9, 2024

This is the third #OAME2024 preview episode
Curriculum Tags: All
https://twitter.com/OAMEtalks/status/1754636573402947603

Image Links

I am always looking at what parts of docudramas are true.  This is a neat data visualization to represent that
Curriculum Tags: MDM4U
https://twitter.com/infobeautiful/status/1753462035491274798

Great films fact-checked and visualised scene by scene. Is there really such a thing as a "true" true story in Hollywood?

Explore: https://t.co/pBn4cnSGWG pic.twitter.com/ME10rkZ4h8

— Information is Beautiful (@infobeautiful) February 2, 2024

What a great data visualization

Curriculum Tags: All
https://twitter.com/jennalaib/status/1754561880985686066

Love this, from @ferdiocom https://t.co/9VR6DmgiGd pic.twitter.com/0aj2JqoLKQ

— Jenna Laib (@jennalaib) February 5, 2024

Math Links for Week Ending Feb 2, 2024

Featured Links

One great resource to help find resources for Black History month is the Mathigon interactive timeline of mathematics. 
Curriculum Tags: All
https://mathigon.org/timeline

February is Black History Month. Elbert Cox was the first African-American to earn a PhD in mathematics. Cox taught at Howard University. Part of his studies included polynomial solutions to differential equations.Learn more here: https://t.co/OJsyEO3vJe

— Mathigon (@MathigonOrg) February 1, 2024

Resource Links

Here is a nice mix of physical and virtual manipulatives to explore parabolas
Curriculum Tags: MPM2D, MFM2P, MCR3U, MBF3C, MCF3M
https://www.mathhappens.org/curve-stitching-parabolas/

"Look! It's a parabola!"

"Is it though?"

How can we check?

New math fun on the @MathHappensOrg blog.https://t.co/VcQkLpKj7D

— Christopher Danielson (@Trianglemancsd) February 1, 2024

Did any of your students enter?
Curriculum Tags: All
https://www.desmos.com/art 

We are so excited to announce the winners of the 2023 Desmos Global Art Contest! Have you found your favorite yet? Explore the full gallery at https://t.co/S9HA6e9QWX pic.twitter.com/SXCMxc7zGU

— Desmos (@Desmos) February 2, 2024

Video Links

Any time that you can help your students understand why an algorithm works, then that's a good time.
Curriculum Tags: All
https://twitter.com/howie_hua/status/1752858797415219686

The long division algorithm CAN be understandable rather than just a procedure to memorize. Here's how we can think about it: pic.twitter.com/m3R69NDheo

— Howie Hua (@howie_hua) February 1, 2024

Again, it's always good to know why things happen and not just follow a trick, rule or algorithm
Curriculum Tags: Gr8, MTH1W
https://twitter.com/howie_hua/status/1752483310113280241

Why do we flip the inequality sign when we multiply/divide by -1? pic.twitter.com/MQ9lRAkfDn

— Howie Hua (@howie_hua) January 31, 2024

The OAME annual conference is coming up and I've done a couple of preview podcast episodes that focus on the featured speakers. Listen here:
Curriculum Tags: All

https://talks.oame.on.ca/season-6

Image Links

Having done this myself before I know that it can be hard to get them just right. Now you have a good set you can use right here
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/DavidKButlerUoA/status/1752747077527044294

Rather proud of making this drawing showing volume for cylinders (including prisms). pic.twitter.com/xPkqFYbOGa

— David Butler (@DavidKButlerUoA) January 31, 2024

Sometimes you just gotta make it relevant for the kids
Curriculum Tags: MTH1W, MFM2P
https://twitter.com/MrValencia24/status/1749148372831748269

Exploring the Distributive Property of Multiplication with Mariana via #MathPlay🧮👨‍👧✖️#CodeBreaker #MTBoS #ITeachMath #MathIsFun #ElemMathChat #STEM #Math #Maths #EdChat #StarWars pic.twitter.com/8XnynjrebI

— Libo Valencia 🧮 MathPlay (@MrValencia24) January 21, 2024