Math Links for Week Ending July 28th, 2023

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#MathPhoto23 is done. Hopefully you participated. Here's a reminder of this year's topics
Curriculum Tags: All
https://twitter.com/TheErickLee/status/1684598991517085696

Thats a wrap for #MathPhoto23! Thanks to all the enthusiastic mathematicians who volunteered to host this year. If your looking for more photo prompts, check out #MathSnaps2023 pic.twitter.com/rRzEGGYWjp

— Erick Lee HRCE Math (@TheErickLee) July 27, 2023

Resource Links

Here is a nice matching activity for trig quadrantal angles 
Curriculum Tags: MCR3U
https://mathequalslove.net/trig-functions-quadrantal-angles-odd-one-out-activity/

New Activity Alert:

Evaluating Trig Functions of Quadrantal Angles Odd One Out Activity https://t.co/XomfvJW5H9 #mtbos #iteachmath #precalchat #precalcchat #iteachtrig pic.twitter.com/swFwiZdXOB

— Sarah Carter (@mathequalslove) July 27, 2023

Video Links

Mmm Pizza
Curriculum Tags: MTH1W
https://twitter.com/howie_hua/status/1683975576665591814

New TikTok video: Which of these pizza slices is the better deal? pic.twitter.com/0PTXWoVxUz

— Howie Hua (@howie_hua) July 25, 2023

Image Links

This definitely made me look
Curriculum Tags: All
https://twitter.com/pickover/status/1682147205484871688

Mathematics.

Shiver in ecstasy. This number is prime. pic.twitter.com/vFN0DJTAcK

— Cliff Pickover (@pickover) July 20, 2023

Math Links for Week Ending July 21st, 2023

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As someone who has provided many hours of math PD in my district, a lot of what @FawnPNguyen says in this relatively short post resonates with me. Especially the part about it needing to expect it take time (and the bit about needing to watch each other teach).
Curriculum Tags: All
https://www.fawnnguyen.com/teach/ddk2byzliszdh05tj1o72rlxdlp8n1

I wrote a new post! https://t.co/QeFOO5zL8F
Also happy to share that https://t.co/ENqAid9wGu got a new look. Please check it out! #MTBoS #iteachmath

— Fawn Nguyen (@fawnpnguyen) July 18, 2023

Resourse Links

It would be cool to have the physical book. I have some older math books (early 1900s) but this is pretty cool. And it's about my favourite, Tessellations. 
Curriculum Tags: All
https://twitter.com/tessellationfan/status/1681399698588938240

An interesting historical finding, of a 1615(!) book on tiling in the context of glass designs. The book is replete with many simple, but attractive tilings, most of which I’ve not seen before! https://t.co/o1oxe8DXzx pic.twitter.com/JlgHMeBsDi

— David Bailey (@tessellationfan) July 18, 2023

Video Links

The Barbie movie is out so why not work on some equivalent ratios?
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/howie_hua/status/1681847685069029377

New TikTok video: If Barbie was my height, what would her waist, hand, and foot measurements be? pic.twitter.com/hySFNdMG1o

— Howie Hua (@howie_hua) July 20, 2023

Image Links

It's this week's #MathPhoto23 theme
Curriculum Tags: All
https://twitter.com/nomad_penguin/status/1681949090740076545

Week 8 of #MathPhoto23 is here!

Our focus is #units.

Where do you see composed and partitioned units around you? How do you see ‘How many’?

Take photos and share to Twitter using hashtags #MathPhoto23 #units.

I can’t wait to see what you find!#MTBoS #iTeachMath pic.twitter.com/6RhSmWeid7

— Amie Albrecht (@nomad_penguin) July 20, 2023

I like, in the comments, that someone points out that there is an example of this at visualpatterns.org
Curriculum Tags: MTH1W
https://twitter.com/jamestanton/status/1681242413145395201

Does the pattern persist?
If so, why? pic.twitter.com/XZwTTesMaT

— James Tanton (@jamestanton) July 18, 2023

Math Links for Week Ending July 14th, 2023

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I like how @Mathigon operates. Of course, I think that most EdTech that are active on social media are happy to take suggestions from their users. But it's nice when they follow up too
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1678481941480239110

We do write down every feature request, and while it sometimes takes us a while, we are working through the list. Thanks for your patience @GLewisOCT!

You can add prefix and suffix labels by turning on authoring mode and then adding the labels in the advanced menu. https://t.co/LXL0EHlaqJ pic.twitter.com/ZLMehYRdvn

— Mathigon (@MathigonOrg) July 10, 2023

Resource Links 

This week @KarenCampe hosted the #MathPhoto23 post about squares (see below). And at the same time she has this great blog post about squares. I think you could find something here for just about every grade. Take a look
Curriculum Tags: All
https://karendcampe.wordpress.com/2023/07/13/shout-out-for-squares/

New Blog Post: Shout Out for Squares!#geometry #MTBoS #iTeachMath https://t.co/n8PTxurwZo

— Karen Campe (@KarenCampe) July 13, 2023

Video Links 

Some Drag Queen combinatorics for you from @OnlineKyne
Curriculum Tags: MDM4U
https://www.tiktok.com/@onlinekyne/video/7255477790437428486?_r=1&_t=8dyQ9SfxVKw

@onlinekyne Okay, maybe dont start actually ranking queens but DO start learning how to code! #dragrace #lipsync #sorting #coding ♬ original sound - Kyne

Image Links 

You can always count on @JamesTanton to give us simply devised problems that have really elegant solutions.
Curriculum Tags: MTH1W
https://twitter.com/jamestanton/status/1679036118082125825

Two squares are constructed as shown in two congruent right isosceles triangles.
Which square is the largest and what is the ratio of their two areas? pic.twitter.com/ziDMJyqWoC

— James Tanton (@jamestanton) July 12, 2023

Here is Week 7 of #MathPhoto23
Curriculum Tags: All
https://twitter.com/KarenCampe/status/1679823018573299715

Hello Math-y folks! Time for week 7 of #MathPhoto23 with theme #squares !
Where do you see squares & cubes in geometric shapes, numbers or anywhere?
Take photos & share to Twitter using hashtags #MathPhoto23 #squares.
Reminder: try to use alt text for access.#MTBoS #iTeachMath pic.twitter.com/tQUh7Etmlh

— Karen Campe (@KarenCampe) July 14, 2023

   

Math Links for Week Ending July 7th, 2023

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Though I have never met @MrValencia24, I feel in him a kindred spirit from all of his posts here on Twitter. And it makes total sense that he would publish a book on called Math Play. And it's even cooler that he's putting it out by @CodeBreakerEdu who literally lives just a few kms away. 
Curriculum Tags: All
https://twitter.com/MrValencia24/status/1675968261278580737

Very grateful and excited to share #MathPlay with the world🌎🌍🌏 Thank you to my publisher @codebreakeredu for amplifying teachers’ voice🙏@McMenemyTweets @mraspinall 🦾#CodeBreaker

📖 https://t.co/jbOw1JtBJj#ITeachMath #MTBoS #MathIsFun #MathChat #ElemMathChat #STEM #math🧮 pic.twitter.com/SNNLHh8DMK

— Libo Valencia 🫶 #MathPlay (@MrValencia24) July 3, 2023

Resource Links

Here's an idea, take a math word and have students take each letter in the word to make a relevant Poem. And while you're at it, check out the other math related poem posts
Curriculum Tags: All
https://poetrywithmathematics.blogspot.com/2023/07/math-class-express-point-of-view-with.html

Video Links

I wonder if the short cut "keep, flip, change" is a US only phrase because I don't recall ever using it (the phrase) here in Ontario. None the less this short video of how to demonstrate why using Polypad is great(compared to my much longer conceptual development of the rule here). 
Curriculum Tags: Gr7, Gr8
https://twitter.com/TimBrzezinski/status/1675475880846475264

Ditch #KeepChangeFlip (version 2): How Ss can meaningfully and visually divide 2 fractions where dividend is < the divisor in @MathigonOrg Polypad (https://t.co/HgqAGlaGXg) https://t.co/ozJSJCSndR #MTBoS #ITeachMath #math #ElemMathChat pic.twitter.com/RUlNZFBqLG

— Tim Brzezinski (@TimBrzezinski) July 2, 2023

I have talked about this pattern for years (as an example of how a pattern may not go on forever) so I totally appreciate @3Blue1Browns explanation (as only he can do)
Curriculum Tags: All
https://twitter.com/3blue1brown/status/1675558616357826560

The puzzle below is a famous cautionary tale in math. But there's more to it than just coincidence, and on the YouTube version, we dig into what's really going on.

Full explanation: https://t.co/KExRH7X4yK pic.twitter.com/kkuXptV1H4

— Grant Sanderson (@3blue1brown) July 2, 2023

And this song as a followup to the above video is pretty good
Curriculum Tags: All
https://twitter.com/3blue1brown/status/1674167549582512129

Happy Tau Day! As something a little different, here’s a clip from a bit I did at @standupmaths's “Evening of Unnecessary Detail” a few years ago.

Full video here: https://t.co/BNlCsRaCQY pic.twitter.com/EnwjVRnZhB

— Grant Sanderson (@3blue1brown) June 28, 2023

Image Links

More prompts from @JamesTanton to practice your coding & math chops
Curriculum Tags: MTH1W
https://twitter.com/jamestanton/status/1676894255195869185

The sum of two triangular numbers is a square number infinitely often: T(n) + T(n-1) = n^2.
It can happen that the product of two triangular numbers is a square number
Eg T(2) = 3 and T(24) = 300 and 3x300 = 900 = 30^2.
Does this happen infinitely often too? pic.twitter.com/EogU1JzBsa

— James Tanton (@jamestanton) July 6, 2023

I have used this image for years to talk about fraction addition. I didn't realize it was part of a series from an artist. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/aamtinc/status/1676818257700089856

Number talks aren't just for primary age children. Check out these amazing images from Turkish artist Sakir Gokcebag.https://t.co/OX5kxbB2H7#Mathseducation #ThinkonThursday #Numbertalks pic.twitter.com/K4uDycatxZ

— AAMT Inc. (@aamtinc) July 6, 2023

It's week 6 of #MathPhoto23    
Curriculum Tags: All
https://twitter.com/DianeDevine18/status/1676681970917466113

#MathPhoto23 #buildmath
Hi Everyone! Time for week 5 of #MathPhoto23! Where do you see mathematical patterns and shapes built into the world around us? Take photos and share to Twitter using the hashtags #MathPhoto23 and #builtmath. #ITeachMath" pic.twitter.com/Uf39G3wPko

— Diane Devine (@DianeDevine18) July 5, 2023