Math Links for Week Ending May 16th, 2025

Featured Links

Here is a really nice pile of apps that span topics like algebra, ratios, linear vs non linear graphs, fractions and much more.
Curriculum Tags: All
https://www.geogebra.org/m/bmyse2ca

🚨Attention #Algebra Ts, are you looking for ideas to review for a final exam❓🤔Check out this @geogebra.org collection of resources: interactive, engaging, and great for #MathPlay 🧮 🔗👇 www.geogebra.org/m/bmyse2ca #MTBoS #ITeachMath #MathSky #MathsToday #STEM #ElemMathChat #EdTech #EdChat #EduSky

[image or embed]

— Libo Valencia 🧮 MathPlay (@mrvalencia24.bsky.social) April 30, 2025 at 6:40 PM

Resource Links

I'm a big fan of productive struggle
Curriculum Tags: All
https://www.comap.com/blog/item/productive-struggle-in-math

💡 What if struggling in math class is actually a good thing? “Productive struggle” helps students build perseverance, problem-solving skills, and a deeper understanding of math. Read more: www.comap.com/blog/item/pr... #Math #MathEducation #ProductiveStruggle #MathTeacher

[image or embed]

— COMAP Math (@comapmath.bsky.social) May 16, 2025 at 11:42 AM

I have posted about Open Middle before but here is some info on using the tools on the website to create your own 

Curriculum Tags: All
https://www.openmiddle.com/

Open Middle embedded problems let you make a warm-up in 30 seconds. See how at openmiddle.com. #openmiddlemath #openmiddle #mathteacher #teacher #math #education #edu #matheducation #productivestruggle #learning

[image or embed]

— Open Middle (@openmiddle.com) May 14, 2025 at 10:35 PM

Some cool new resources released from @DesmosClassroom
Curriculum Tags: All
https://teacher.desmos.com/

https://teacher.desmos.com/

Video Links

I used to love doing these types of problems with students. Great for wrapping your head around infinity
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/1923130416250175916

4 arguments for why 0.999...=1 pic.twitter.com/GEyC5FCGdK

— Howie Hua (@howie_hua) May 15, 2025

Image Links

Here's a juicy sequence and sum problem
Curriculum Tags: MCR3U
https://bsky.app/profile/unsolvedmre.bsky.social/post/3lpcns7ttd223

I have to say, sequence & sum problems are some of the funnest to create #iTeachMath

[image or embed]

— Matt Enlow (@unsolvedmre.bsky.social) May 16, 2025 at 2:27 PM

Math Links for Week Ending May 9th, 2025

 Featured Links

Most of the links are from this week's #OAME2025 conference. Here are my offerings this year
Curriculum Tags: All
http://bit.ly/oame-petro

I had a blast talking about creating activities and programming in CL in @DesmosClassroom at the @OAMElearns #OAME2025 conference. My slides are here and the recordings will be available on the virtual conferencehttps://t.co/indBLptcoZ#MathChat #MTBoS #iTeachMath pic.twitter.com/54ljrc07vG

— David Petro (@davidpetro314) May 10, 2025

Resource Links

Although this activity had a lot of moving parts, I think it was a very cool application of dividing polynomials
Curriculum Tags: MHF4U
bit.ly/PolyCodeOAME

A very cool application of polynomial division from @PGustainis at the @OAMElearns #OAME2025 conference. Here are all the resourceshttps://t.co/hwsPlB6xm2#MathChat #MTBoS #iTeachMath pic.twitter.com/1J68Utgalu

— David Petro (@davidpetro314) May 10, 2025

Some ideas on building Co-capacity with small group instruction in gr 9
Curriculum Tags: MTH1W
https://docs.google.com/presentation/d/101CIM7Q2Rg4OphEhZiX7RgsbLQqhACZBT0rYD9wfWVI/edit

Some great ideas from @aledaklassen at the @OAMElearns #OAME2025 conference on Co-Capacity building with small group instruction https://t.co/JDF9d9PIef#MathChat #MTBoS #iTeachMath pic.twitter.com/KJGAT4GJ5K

— David Petro (@davidpetro314) May 9, 2025

Some great ideas dealing with using AI in the classroom
Curriculum Tags: All
https://docs.google.com/presentation/d/1rvz8p1jglM2xUbnWd9cUZPjpk5-8pSb8CXvK8MWWLNQ/edit

Learning how to harness the power of AI in #math class and as a #math teacher from @robinmath3 at the @OAMElearns #OAME2025 conference https://t.co/vzduHWlVYa#MathChat #MTBoS #iTeachMath pic.twitter.com/vy9FAmKsG0

— David Petro (@davidpetro314) May 8, 2025

A nice keynote from @DrVCJones
Curriculum Tags: All
https://linktr.ee/dr_vcjones

Some great resources from @drvcjones on raising #MathEsteem at the @OAMElearns #OAME2025 conference https://t.co/KhTwqnUfqj#MathChat #MTBoS #iTeachMath pic.twitter.com/PMowFwaZfq

— David Petro (@davidpetro314) May 8, 2025

I love the music and art connections that can be made with #PolyPad
Curriculum Tags: All

http://bit.ly/oame-polypad

Some great #polypad resources on #art and #music and #math from @davidporas at the @OAMElearns #OAME2025 conference. A great way to start the conference offhttps://t.co/YsbRQMpcC5#MatChat #MTBoS #iTeachMath pic.twitter.com/Oy3XSOWzp2

— David Petro (@davidpetro314) May 8, 2025

Some ideas on creating a shared culture in math classroom

Curriculum Tags: All

https://docs.google.com/presentation/d/1azveudVIMvXV2p2BXu8lQz02Sn1B8JgSy0OXyiDoPCI/present?slide=id.p

Some tips on building a shared culture in #math class from @lpconnaughton.bsky.social at the #OAME2025 conference docs.google.com/presentation... #MathChat #MTBoS #iTeachMath

[image or embed]

— DavidPetro314 (@davidpetro314.bsky.social) May 9, 2025 at 9:52 PM

A couple of funny Math related pope posts
Curriculum Tags: All
https://x.com/LongFormMath/status/1920545813987483707
https://x.com/howie_hua/status/1920555129876492510

The new pope was a math major in college. So if a students asks you what types of jobs there are for math majors, well, there you go. Start studying those higher powers!

— Jay Cummings (@LongFormMath) May 8, 2025

Since the new Pope has a degree in math, I really hope he will say that eating pie is not a sin because sin(pi)=0.

— Howie Hua (@howie_hua) May 8, 2025

Who knew you could connect philosophy and math proficiency?

Curriculum Tags: All
https://bsky.app/profile/bielleogy.bsky.social/post/3lommeqdizs2j

Wait wait wait, are you saying reasoning is important in endeavors that require reasoning??? Another aspect why the systematic dismantling of liberal arts education is so tragic.

[image or embed]

— Dr. Elinne Becket (@bielleogy.bsky.social) May 7, 2025 at 8:03 PM

Video Links

Two proofs of the Pythagorean theorem
Curriculum Tags: Gr8, MTH1W
https://bsky.app/profile/howiehua.bsky.social/post/3lobkjxjnss2l

Two proofs of the Pythagorean theorem and the proof that one U.S. President submitted as a unique proof 5 years before his presidency.

[image or embed]

— Howie Hua (@howiehua.bsky.social) May 3, 2025 at 10:31 AM

Image Links

@NatBanting gave a great keynote on what the "basics" are. Here are some key slides
Curriculum Tags: All
https://x.com/davidpetro314/status/1920954878714589628

Some thoughts from @NatBanting about what the "basics" of math are at the @OAMElearns #OAME2025 conference #MathChat #MTBoS #iTeachMath pic.twitter.com/DQMfWlc5Tk

— David Petro (@davidpetro314) May 9, 2025

Determine the area
Curriculum Tags: MTH1W
https://x.com/ganeshuor/status/1920476200666845586

Area of the shaded region=? pic.twitter.com/WeotuwyuhD

— Ganesh UOR (@ganeshuor) May 8, 2025

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...

[image or embed]

— 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

[image or embed]

— 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 Apr 25th, 2025

Featured Links

#SmudgeMath is a great way to make a question a bit friendlier and encourage work on more difficult questions. Just about any question can turn into a #SmudgedMath question but here is a bunch premade.
Curriculum Tags: All
https://www.normabgordon.com/smudgedmath-tasks

Starting to think of a spring/summer project - should I revisit and compile more #smudgedmath tasks? www.normabgordon.com/smudgedmath-... #iteachmath #MTBoS #imentormath

[image or embed]

— Norma B Gordon (@normabgordon.bsky.social) April 8, 2025 at 3:33 PM

Resource Links

To me this is more evidence that mathematics is something that is discovered (by any being) and not invented (by humans)
Curriculum Tags: All
https://www.npr.org/2025/04/12/nx-s1-5359438/a-crows-math-skills-include-geometry#philsky

A crow’s math skills include geometry Crows are able to look at a handful of four-sided shapes and correctly distinguish those that exhibit geometric regularity from those that don't, according to a provocative new study. www.npr.org/2025/04/12/n... #philsky #philosophy #intelligence #crows #math

[image or embed]

— Anita Leirfall (@anitaleirfall.bsky.social) April 24, 2025 at 4:56 PM

Video Links

Any help with understanding what fraction division means is useful.
Curriculum Tags: Gr7, Gr8, MTH1W
https://x.com/howie_hua/status/1915531531617263820

Fraction division CAN be understandable! Here are 3 ways we can think about it. pic.twitter.com/uaOPx0JLAt

— Howie Hua (@howie_hua) April 24, 2025

Image Links

I like these types of questions because, I think, at first glance they seem difficult but upon further scrutiny, they are quite do able. 
Curriculum Tags: Gr8, MTH1W
https://x.com/GeometryPuzzles/status/1914335310928101601

Simplifying radicals #radicals #algebra pic.twitter.com/OUplOLSOb3

— Math Lover (@GeometryPuzzles) April 21, 2025

Here's a nice algebra question for you 
Curriculum Tags: MTH1W
https://bsky.app/profile/PercyButtons3.mathstodon.xyz.ap.brid.gy/post/3lnjzsa5zb6n2

Here's the question for April 24th from the AMS Daily Epsilon of Math Calendar. For those unfamiliar with the calendar, the answer is always the day of the month. Looking for imaginative solutions is the aim. #mathstodon #math #maths #mathematics #MathsToday

[image or embed]

— Suat Ayöz (@PercyButtons3.mathstodon.xyz.ap.brid.gy) April 24, 2025 at 2:03 AM

Math Links for Week Ending Apr 18, 2025

Featured Links

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

Image Links

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 Apr. 11th, 2025

Featured Links

I really like this problem because you can take a brute force method with skills as complex as those found in gr7 & 8 or take it all the way to Calculus. I threw my hat with a dynamic geometry solution here. 
Curriculum Tags: All
https://x.com/jamestanton/status/1908437200653468022

Warm up:
Where on the diagonal should the dot be placed so that the sum of areas of the two squares is as small as possible? pic.twitter.com/S51tNtmKJM

— James Tanton (@jamestanton) April 5, 2025

Resource Links

As a calculus teacher I always found I never had enough resources to teach related rates. 
Curriculum  Tags: MCV4U
https://bsky.app/profile/theericklee.bsky.social/post/3lm653o3o5s2w

I don't know what my students will think but I had a lot of fun making this problem. #ITeachMath teacher.desmos.com/activitybuil...

[image or embed]

— Erick Lee (@theericklee.bsky.social) April 6, 2025 at 3:02 PM

Video Links

I always like a good visual proof of an infinite series
Curriculum Tags: MCR3U, MHF4U, MCV4U
https://x.com/howie_hua/status/1910118057080725712

Finding 1/2 + 1/4 + 1/8 + 1/16 + ... by drawing: pic.twitter.com/8I1Q07xnTU

— Howie Hua (@howie_hua) April 9, 2025

I never get tired of this animation
Curriculum Tags: Gr8, MTH1W
https://x.com/Matematickcom/status/1910253679401185742

Beautiful visualization 👍 pic.twitter.com/gyi1L0B4TP

— Matematickcom (@Matematickcom) April 10, 2025

Image Links

Makes sense to me
Curriculum Tags: All
https://bsky.app/profile/motivickyle.bsky.social/post/3lm3jfmbdts24

From my kiddo's school's math event 😍 🧮

[image or embed]

— χle Ormsby (@motivickyle.bsky.social) April 5, 2025 at 2:04 PM

Math Links for Week Ending Apr 4th, 2025

Featured Links

Even though we can't see the presentations, I think the summaries offer some good ideas. This one is my favourite: " Don't focus on getting info INTO students' brains, more on getting info OUT!". Check out the original post to see all of the 7 for 7 presentations at the TI conference. 
Curriculum Tags: All
https://bsky.app/profile/karencampe.bsky.social/post/3lljf4p47uc2j

Last not least @jgough Jill Gough: Visualization in a Language-Rich Mathematics Class Don't focus on getting info INTO students' brains, more on getting info OUT! What is the movie you are making in your mind? Verbalize/visuals for deep learning #T3Learns #T3IC #iTeachMath

[image or embed]

— Karen Campe (@karencampe.bsky.social) March 29, 2025 at 12:39 PM

Resource Links

Even though some of these are most certainly university level equations, there are definitely equations here that fit into the high school math (and physics) curriculum.
Curriculum Tags: All
https://www.businessinsider.com/17-equations-that-changed-the-world-2014-3

Ian Stewart shared what he calls '17 equations that changed the course of history' www.businessinsider.com/17-equations... ianstewartjoat.weebly.com/equations.html #mtbos #iteachmath #historyOfMath

[image or embed]

— Dilip Barman (@dbarman.bsky.social) April 2, 2025 at 1:12 AM

Here's a nice little applet to visualize normal vectors
Curriculum Tags: MCV4U
https://www.geogebra.org/u/daniel+mentrard

The angle between two planes is a angle
between their normal vectors
Visualization |Animation | Interactive applet@geogebrahttps://t.co/23BUle1Oxk
#geogebra #math #science #iteachmath #mtbos #visualization #elearning @bancoche #physics pic.twitter.com/2G4p3jI7fw

— Daniel Mentrard (@dment37) April 1, 2025

Video Links

I think this could be used when talking about number systems (in terms of triangle numbers) or to conceptualize the patterns that exist in (this particular) sequence. 
Curriculum Tags: MTH1W, MCR3U
https://x.com/howie_hua/status/1907217126634500392

1, 3, 6, 10, ... how can we find the 100th triangular number? pic.twitter.com/RUNgaC6iaV

— Howie Hua (@howie_hua) April 1, 2025

This is a neat visualization that never occurred to me. Try it with your students
Curriculum Tags: MTH1W, MPM2D
https://x.com/howie_hua/status/1908311966017589472

Did you know we can visualize rewriting square roots? I wish I was at least shown this in school. pic.twitter.com/gnTrMGSxQz

— Howie Hua (@howie_hua) April 5, 2025

I know these are simulations, but the math checks out and they would work IRL.
Curriculum Tags: All
https://x.com/mburnsmath/status/1908145074216763552

I love these. https://t.co/5k7rRKDumM

— Marilyn Burns (@mburnsmath) April 4, 2025

Image Links

This seems like the kind of question that has brute force solutions and more elegant solutions (and code based solutions). To me that makes it perfect for all grade levels. 
Curriculum Tags: All
https://bsky.app/profile/makeaproblem.bsky.social/post/3llonl6tnpc2h

Happy Monday! This problem is inspired by the 1971 Canadian Math Olympiad Q7 Which are there more of, 2-digit numbers that are divisible by their 10s digit, or 2-digit numbers that are divisible by their unit digit? #math #maths #ProblemSolving #iteachmath #mathsky

[image or embed]

— Durtles (@makeaproblem.bsky.social) March 31, 2025 at 11:15 AM