Math Links for Week Ending Dec 19th, 2025

Featured Links

Who among us have no seen math students do this on the regular in class?
Curriculum Tags: All
https://x.com/mariana057/status/2001374920073449837

I don't always clear my calculator...

but when I do, I hit both 'C' and 'CE' a bunch of times because I don't know exactly what they do.

— mariana Z (@mariana057) December 17, 2025

Resource Links

Whether you are actually studying sums of series or just having students work with number patterns, this is a good way to go about it. 
Curriculum Tags: MTH1W, MCR3U
https://fawnnguyen.substack.com/p/find-the-smallest-sum





Flex you or your student's @Desmos muscles 
Curriculum Tags: All
https://bsky.app/profile/desmos.com/post/3maen3ia6ak27

Have some free time over the next couple weeks? You have less than a month to submit your work to the Desmos Art Contest! Head to desmos.com/art for more information, and be sure to hit submit before January 15th, 2026. #mathsky #iteachmath

[image or embed]

— Desmos Studio (@desmos.com) December 19, 2025 at 4:28 PM

Video Links

Some nice trig related visuals
Curriculum Tags: MCR3U, MCF3M
https://x.com/InterestingSTEM/status/2000944015404056826

Trigonometric patterns explained.pic.twitter.com/eF4JBwh86J

— Interesting STEM (@InterestingSTEM) December 16, 2025

I like how in this question you could use systems of equations but you could also use logic
Curriculum Tags: MPM2D, MFM2P
https://x.com/howie_hua/status/1999526011814211709

What is the weight of the dog, cat, and bunny? pic.twitter.com/1dcYFlZDKa

— Howie Hua (@howie_hua) December 12, 2025

This is a good example of poor knowledge of percents. What would you say to a student who has this misconception.

Curriculum Tags: Gr7, Gr8, MTH1W

https://bsky.app/profile/bobsonwong.com/post/3madl47uyz22l

Bad math #MTBoS #ITeachMath

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— Bobson Wong (@bobsonwong.com) December 19, 2025 at 6:20 AM

Image Links

Cosine on a Bovine
Curriculum Tags: MPM2D, MCR3U, MCF3M, MHF4U
https://x.com/howie_hua/status/2001449294176592049

You've heard of elf on the shelf but have you heard of pic.twitter.com/Iy4IG03Zs2

— Howie Hua (@howie_hua) December 18, 2025

I have a z-mas tree at my house :-)
Curriculum Tags: MCR3U
https://x.com/Anthony_Bonato/status/2001279107871457399

As a mathematician, I must post this every Christmas season. I don't make the rules pic.twitter.com/jmaKTUzXcu

— Anthony Bonato (@Anthony_Bonato) December 17, 2025

Sometimes the nature of math is amazing
Curriculum Tags: All
https://x.com/pickover/status/1999494678501294412

Mathematics and mystery.

Shiver in ecstasy. The circle that fits precisely inside a 3-4-5 Pythagorean triangle has an area of π. OMG. pic.twitter.com/QtpYmwiiAE

— Cliff Pickover (@pickover) December 12, 2025

Classic factorial humour
Curriculum Tags: MDM4U
https://x.com/pickover/status/2000676079514567060

This is a math joke.
(Meme circulating widely on the Web.) pic.twitter.com/pSewCXvwnv

— Cliff Pickover (@pickover) December 15, 2025