Math Links for Week Ending June 20, 2025

Featured Links

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 June 13, 2025

Featured Links

I have always like @StevenStrogatz's writing. Here is some new stuff
Curriculum Tags: All
https://www.nytimes.com/interactive/2025/06/09/science/math-strogatz-taxi-geometry.html

My new #math series in the New York Times, "Math, Revealed," is aimed at everyone, whether you love math or not. Have a look! You can read it here for free without a subscription. https://t.co/M6xe5i1vPq

— Steven Strogatz (@stevenstrogatz) June 9, 2025

Resource Links

Some great resources from @MathEqualsLove
https://x.com/mathequalslove/status/1933289499234050060
https://x.com/mathequalslove/status/1932822439659995182
https://x.com/mathequalslove/status/1933519124791243006

A logic puzzle that uses inequality symbols? Futoshiki puzzles for the win! https://t.co/nj0AYUMhxH#mtbos #iteachmath #puzzlingclassroom pic.twitter.com/Gdto5JCiZJ

— Sarah Carter (@mathequalslove) June 12, 2025

During the last week of school, I had some students ask me if I had any coloring pages they could have. I didn't, but I did add "make mathematical coloring pages" to my to do list for this summer! https://t.co/c0IJv6qmw8#mtbos #iteachmath pic.twitter.com/vNepaWgqKh

— Sarah Carter (@mathequalslove) June 11, 2025

Simplifying Square Roots Bingo - my Algebra 3 students were majorly lacking this skill last year, so I decided to make a game to play at the beginning of the year to review this skill. https://t.co/X0Y2VZpOFV#mtbos #iteachmath pic.twitter.com/cJdU8PDr7h

— Sarah Carter (@mathequalslove) June 13, 2025

Video Links

I love the idea of deriving stuff from something simple you already know
Curriculum Tags: Gr7, Gr8, MTH1W
https://x.com/howie_hua/status/1933184489879982127

Teaching area formulas as how the shape is related to a rectangle helps build conceptual understanding.

Here's how to derive the area formulas of a parallelogram, triangle, trapezoid, kite, regular hexagon, and even a circle from the area formula of a rectangle: pic.twitter.com/QgiawtwJMK

— Howie Hua (@howie_hua) June 12, 2025

Image Links

This week's prompt
Curriculum Tags: All
https://bsky.app/profile/theericklee.bsky.social/post/3lrgcxo3cfk2h

Math Links for Week Ending June 6th, 2025

Featured Links

It's time for #MathPhoto25. Check out the week's theme and post your pic using the hashtag #MathPhoto2.
Curriculum Tags: All
https://bsky.app/profile/theericklee.bsky.social/post/3lquesarx7c2j

It's time to kick off #MathPhoto25 with #squares! Hunt for square shapes and perfect square numbers. Take photos & share on Bluesky using the hashtags #MathPhoto25 and #square. Please add alt text to your photos for increased access. #ITeachMath

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— Erick Lee (@theericklee.bsky.social) June 5, 2025 at 8:59 AM

Resource Links

Not only the prompt, but stuff about the thinking that may be needed to address it.
Curriculum Tags: All
https://denisegaskins.com/2025/05/29/thinking-thursday-quarter-the-square/

Thinking Thursday: Quarter the Square People learn math by playing with ideas. A math journal can be like a science lab book. #homeschooling #mathjournal #letsplaymath #mtbos #iteachmath

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— Denise Gaskins (@denisegaskins.com) May 29, 2025 at 9:01 AM

Video Links

It truly is a hurdle you have to help students overcome.
Curriculum Tags: All
https://x.com/howie_hua/status/1930317676607312031

As a math teacher, it feels like half of my job is building mathematical confidence. Here are some ways I do that: pic.twitter.com/EXHPnd23T1

— Howie Hua (@howie_hua) June 4, 2025

Image Links

This starts with an image prompt but the solution is via video.
Curriculum Tags: Gr8, MTH1W
https://x.com/TimBrzezinski/status/1930593136377549134

Can you solve this? 🤔 Solution: https://t.co/ZjcVrc6DWj pic.twitter.com/SPVsKT8dfH

— Tim Brzezinski (@TimBrzezinski) June 5, 2025

Math Links for Week Ending May 30th, 2025

Featured Links

I love this train of thought set of posts to solve this area problem with a surprising result. Take the time to go through @DavidKButler's solution, at least to see the surprising result but also to get a great example of the art of problem solving. 
Curriculum Tags: All
https://bsky.app/profile/davidkbutler.bsky.social/post/3lqdbrayyx22v

Ok let me #TryMathsLive with this from @mathforge.org …

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— David K Butler (@davidkbutler.bsky.social) May 29, 2025 at 1:50 PM

Resource Links

A great set of @Geogebra dynamic resources on angle properties from @Libro
Curriculum Tags: Gr7, G8, MTH1W
https://www.geogebra.org/m/ujsgmc8w

Video Links

As always I appreciate that he says why this works
Curriculum Tags: MTH1W, MPM2D
https://x.com/howie_hua/status/1926324656832725401

If you know one square number, you can mentally calculate the next square number! Here's how: pic.twitter.com/xyTDQNyeIG

— Howie Hua (@howie_hua) May 24, 2025

An interesting take on negative exponents

Curriculum Tags: MTH1W, MPM2D

https://x.com/howie_hua/status/1927856254405247111

Exponents are seen as repeated multiplication, but what represents repeated division? pic.twitter.com/p73voglRfL

— Howie Hua (@howie_hua) May 28, 2025

I would definitely use this problem when dealing with equations and applications of equations to have kids calculate things like the speed when hitting the water, the speed or the height, which should all be attainable from the time of the fall.
Curriculum Tags: MPM2D, MCR3U, MCF3M, MBF3C
https://x.com/davidpetro314/status/1927069513075277858

There is a #math and/or #physics problem in here. #MTBoS #iTeachMath #MathChat #iTeachPhysics https://t.co/rT5ejQgILd

— David Petro (@davidpetro314) May 26, 2025

Image Links

What math problem would you ask about this situation. Thanks to @DonFraser9 for this one
Curriculum Tags: All
https://x.com/stats_feed/status/1928170132179738754

Les Stewart typed out every number from one to one millions on his typewriter, not in number form, but spelled out. It took him 16 years. pic.twitter.com/hnwskwkZ9U

— World of Statistics (@stats_feed) May 29, 2025

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 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

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— 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

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— 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

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— 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

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— 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

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— 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.

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— 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.

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— 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