Math Links for Week Ending May 24th, 2024

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I like when teachers take the time to ruminate on what lessons THEY'VE learned over their years of teaching
Curriculum Tags: All
https://x.com/JRappaport27/status/1791912904058388711

Until schooling got in the way, math played a key role in my life.

By grade 10 I was told math class wasn’t a place for me.

I was about 5 years into my career when I fully committed myself to math education.

Here’s 20 things I’ve learned in the last 15 years. @DanShuster pic.twitter.com/58Fd9qxRX4

— Jordan Rappaport (@JRappaport27) May 18, 2024

Resource Links

If you are an eBook reader then you might want to take advantage of these deals
Curriculum Tags: All, MCV4U
https://www.amazon.com/Change-Only-Constant-Wisdom-Calculus-ebook/dp/B07NCXGQC3
https://www.amazon.com/Math-Games-Bad-Drawings-Games-ebook/dp/B09BN43BP4/

If you've been wanting the Kindle version of Math Games with Bad Drawings, now is the moment: it's currently 1/3 the usual price, just $4.99 (but my publisher and I still get paid as if it's full price!)https://t.co/5t03xGUjYf

— Ben Orlin (@benorlin) May 20, 2024

Oh, and my calculus book Change is the Only Constant is $3.99! Please enjoy this moment when a volume of popular mathematics is cheaper than a lattehttps://t.co/tk0R3sKLg9

— Ben Orlin (@benorlin) May 20, 2024

A nice optimization applet from @Geogebra
Curriculum Tags: MCV4U
https://x.com/MrValencia24/status/1792969634389369128

Today #Calculus ss got to explore optimization problems while doing some #MathPlay🧮 via @geogebra👨‍💻

Amazing resource by @panlepan🙏
🔗https://t.co/5Ow9eUseed#ITeachMath #MTBoS #MathisFun #MathChat #STEM #EdTech pic.twitter.com/TNg4FDAhiQ

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

And now an applet to connect the volume of a cone and cylinder
Curriculum Tags: MTH1W
https://x.com/geogebra/status/1792970680331554818

🍦🥫 GEOGEBRA RESOURCE! 🧮👩‍🎓

Try this FREE GeoGebra Exploration resource to discover the relationship between the volume of cones and volume of cylinders.
Check it out!https://t.co/3hYZFF1cnZ#MTBoS #iteachmath #math #geometry pic.twitter.com/empz76z021

— GeoGebra (@geogebra) May 21, 2024

Video Links

If you are teaching Calculus then why not use some real life data. There isn't an actual Desmos file here but you can watch the video and easily see how to build it. 
Curriculum Tags: MCV4U
https://x.com/Desmos/status/1793616595094237334

Love to see this type of Chemistry application, modeling and analyzing data! 🧪🔬 https://t.co/HPzyW6q2oW

— Desmos (@Desmos) May 23, 2024

Who doesn't like a good physical fractal
Curriculum Tags: All
https://x.com/RobFathauerArt/status/1792213830673813539

pic.twitter.com/mDU1nzUSZ2

— Robert Fathauer (@RobFathauerArt) May 19, 2024

Image Links

A perfect starter for your class. Once you can see them you can't unsee them

Curriculum Tags: All
https://x.com/Rainmaker1973/status/1791126664165892516

This is called the Coffer illusion.

In this image there are 16 circles.

Can you find them? pic.twitter.com/xZe6tID4Tu

— Massimo (@Rainmaker1973) May 16, 2024

This is an interesting test of how understanding the Pythagorean Theorem is important in connecting to scale. 
Curriculum Tags: Gr8, MTH1W
https://x.com/jamestanton/status/1792121013209084289

3^2 + 4^2 = 5^2.
The lilac triangle is a right triangle.
What can you say then about the area of a tilted little square compared to the area of a non-tilted little square? pic.twitter.com/wAcJviB2u7

— James Tanton (@jamestanton) May 19, 2024

Something to help connect graphing points to something students may (or may not understand)
Curriculum Tags: Gr8, MTH1W
https://xkcd.com/2912/

Cursive Letters https://t.co/Fw9b9tCKGO pic.twitter.com/lqyc92PImR

— Randall Munroe (@xkcd) March 27, 2024

This would be a nice classroom Starter
Curriculum Tags: All
https://x.com/engineers_feed/status/1793159865487278267  

Mathematical puzzle. Find h pic.twitter.com/7nQFg6Rgod

— World of Engineering (@engineers_feed) May 22, 2024

Math Links for Week Ending May 17, 2024

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If you are into Building Thinking Classrooms then you might be interested in the fact that they have just redone their website. And if you head over there then you might want to start with the resource page
Curriculum Tags: All
https://www.buildingthinkingclassrooms.com/resources

The @BTCthinks team are excited to unveil the new https://t.co/B2nABK6QqI site. You'll find it full of new information on BTC, books, thinking tasks, research, events, consulting, merchandise and more! We hope the site is valuable to the #buildingthinkingclassrooms community. 1/2 pic.twitter.com/K2P7Er3uyg

— Peter Liljedahl (@pgliljedahl) May 15, 2024

Resource Links

Some fun with triangular numbers and visualizing them with @Desmos. Especially if you are introducing quadratic relations. 
Curriculum Tags: MPM2D
https://twitter.com/Desmos/status/1788205292791939202

Recursion lets us extend visual patterns like these “triangle numbers”, allowing us to define a function in terms of a previous term. What are you going to make next?
Explore the graph: https://t.co/uPcLG84L6j
Learn more about recursion: https://t.co/cBRP6ZBNUd pic.twitter.com/sjhAFhf8X7

— Desmos (@Desmos) May 8, 2024

A nice resource to visualize running probabilities
Curriculum Tags: MDM4U
https://twitter.com/jcponcemath/status/1791058715023720833

The law of large numbers states that the average result from a series of trials will converge to the expected value.@geogebra applet to explore the law of large numbers:https://t.co/R8fqVsIl5B#iteachmath #simulation pic.twitter.com/kXOsnbdoG6

— ∞ 𝕁uan ℂarlos (@jcponcemath) May 16, 2024

Here is a nice resource for understanding outliers on scatterplots
Curriculum Tags: MTH1W, MDM4U
https://twitter.com/geogebra/status/1791523353922277855

🧠👩‍🏫 GEOGEBRA RESOURCE! 👟📖

Try this FREE GeoGebra Exploration resource to experiment with how data points can affect the clusters in a scatter plot and table.
Check it out!https://t.co/DtGfyrZgyt#MTBoS #iteachmath #math pic.twitter.com/S796x3uBgD

— GeoGebra (@geogebra) May 17, 2024

Playing around with scatterplots dynamically to look at correlation
Curriculum Tags: MTH1W, MDM4U, MAP4C

Lo fácil que es hacer esto con @geogebra y lo que puede iluminar un concepto. https://t.co/qJIxm89EAt pic.twitter.com/37J6AEzmJU

— Alejandro Gallardo ۞ (@alegallardo28) May 17, 2024

Video Links

The power of doubling
Curriculum Tags: MPM2D, MBF3C, MAP4C

https://twitter.com/howie_hua/status/1789286317467341249

How many times do we need to fold a piece of printer paper in half so it is as thick as the distance between Earth and the moon? pic.twitter.com/EDZpU65gO5

— Howie Hua (@howie_hua) May 11, 2024

That famous math problem meme
Curriculum Tags: All
https://twitter.com/saravdwerf/status/1789382946840785000

Proof that math word problems happen in real life. There IS someone out there with a cart of watermelons….and it’s not a math teacher. 😂😂😂 #TikTok https://t.co/a1thIVHaTu

— Sara VanDerWerf (@saravdwerf) May 11, 2024

I like this because it gives some nice context for the difference of squares
Curriculum Tags: MPM2D
https://twitter.com/howie_hua/status/1790900918998929674

Can you mentally calculate 14×26? 35×45? 91×89? If not, see how difference of squares can help you. pic.twitter.com/TB2YwZHs6F

— Howie Hua (@howie_hua) May 16, 2024

Image Links

Are you introducing plotting on an xy plane then you might want to start with a graph like this to help get students into the meaning of the quadrants in a friendly way
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/infobeautiful/status/1788930750223438166

What's the best #dog breed, according to the data? The #dataviz dog-lovers have been waiting for: https://t.co/FvflKWXJhS pic.twitter.com/ooxFtYbxvg

— Information is Beautiful (@infobeautiful) May 10, 2024

This could be a good starter in your math class 
Curriculum Tags: All
https://twitter.com/j_lanier/status/1789233483732435037

Here are 12 dots on a 5x5 grid. No 4 of them make a square. But no matter where you add 1 more dot to this arrangement, a square gets made. (Check it!)

Can you place more than 12 dots on the grid and avoid making any squares?

If you're a teacher & this piques your curiosity... pic.twitter.com/8fKgzGKt2t

— Justin Lanier (@j_lanier) May 11, 2024

A probability question for you
Curriculum Tags: MDM4U
https://twitter.com/pickover/status/1790377113733800196

Mathematics.

Assume that Amy has a 20% chance of becoming pregnant after a romantic encounter (RE). How many REs would Amy need — to have a greater than 95% chance of becoming pregnant. pic.twitter.com/RS6CyclYhn

— Cliff Pickover (@pickover) May 14, 2024

Someone doesn't understand proportions
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1790680990576193943

Something that sounds sensational but is really normal: " so 25% of every dollar is at least 25 cents" https://t.co/cdfibt5cWd

— David Petro (@davidpetro314) May 15, 2024

Math Links for Week Ending May 10, 2024

Featured Links

I feel like really deep blog posts about cool math subjects have become more rare. So I was pleasantly surprised by this latest post from @ChrisHunter36. Not only about the topic but also slick way he included interactives and videos
Curriculum Tags: MTH1W
https://chrishunter.ca/2020/11/18/wtf-and-lcm-aka-bunk-and-bonzo/

The math behind why Led Zeppelin’s “Kashmir” sounds “off”https://t.co/3GRV0YoE9L pic.twitter.com/WmB0wEbmhi

— Chris Hunter (@ChrisHunter36) April 26, 2024

Resource Links

What a cool new resource that I didn't know existed. There are probably a tonne of different topics that you can use this MathsVenns.com resource for and @MrBartonMaths has a bunch of examples. It's been a while since I've used his stuff but I'v always been happy with the stuff he puts out. 
Curriculum Tags: All
https://mathsvenns.com/

Big thanks to @Wipebook for their sponsorship of so many #OAME2024 sessions🙌🙌

Happy to introduce #MathsVenns from @mrbartonmaths to another group of Ts as part of my session⭐️ https://t.co/TMSBEuMW8N https://t.co/EWZ1BahDVJ pic.twitter.com/HCo9CnEzzn

— Kirsten Dyck (@KirstDy) May 6, 2024

So many cool problems here
Curriculum Tags: MTH1W
https://mathshko.com/2018/09/24/area-of-a-sector/

I love the depth and aesthetic of @giftedHKO's problem sets. This problem generated a lot of great discussion in class today:https://t.co/TfP5NIN2Z5 pic.twitter.com/GXJzYg1kdg

— Sam Graf (@graf_paper) May 9, 2024

Video Links

A fun thing to do with a bunch of cubes
Curriculum Tags: All
https://twitter.com/pickover/status/1787941698657558710

Image Links

Looking for a new combinatorics problem?
Curriculum Tags: MDM4U
https://twitter.com/jamestanton/status/1787050351432257920

Permutation & combination questions are annoying!
I roll 10 identical dice simultaneously.
a) How many of those outcomes have the form
xxx aa bb p q r
--six distinct values for a triple, two pairs of doubles, three singles?
b) How many different "forms" are there? pic.twitter.com/NiQ96DoRgG

— James Tanton (@jamestanton) May 5, 2024

Where does your PIN lie?
Curriculum Tags: MDM4U
https://twitter.com/infobeautiful/status/1787873798273802520

Most common 4-digit PIN numbers - from an analysis of 3.4m leaked from several #databreaches by the late great @DataGeneticshttps://t.co/kKdQWr1nAO pic.twitter.com/DJrAP3XI02

— Information is Beautiful (@infobeautiful) May 7, 2024

Math Links for Week Ending May 3rd, 2024

Featured Links

I did a lot of sessions this year at #OAME2024. Five to be exact. One on Desmos activities for Gr7&8 and a companion version for Secondary. One of Desmos Geometry and another on Desmos 3D (with vectors and planes). I also did one on Assessment values. You can get all the slides at the link below:
Curriculum Tags: All
https://bit.ly/oame-petro

I was busy at #OAME2024 this year as I presented 5 sessions. A bunch on @Desmos & @desmosclassroom (Activities for Gr7&8 and Secondary, plus Geometry and 3D stuff) as well as one on Assessment values. All the slides are herehttps://t.co/nNbJ0nTE1E#MathChat #MTBoS #iTeachMath pic.twitter.com/f6GHMOI2ho

— David Petro (@davidpetro314) May 3, 2024

Resource Links

When I saw that Polypad had this new feature with sound I thought it was cool but wondered about how I could actually use it. Well @JennaLaib gives a good use right here
Curriculum Tags: MTH1W
https://jennalaib.wordpress.com/2024/04/24/fraction-intervention-sonata-for-eighth-notes-in-e-flat-major/

NEW BLOG POST
"Fraction Intervention: Sonata for Eighth Notes in E Flat Major"https://t.co/g0L8Bc3smX

Music is so math-y! (And vice-versa!) 7th graders and I used our knowledge of fraction operations to translate sheet music to fraction bars on polypad. @MathigonOrg @Amplify

— Jenna Laib (@jennalaib) April 24, 2024

I really appreciate the work done here as presented by @Mr_Ian_Dehnam at #OAME2024 on Outcomes Based Assessment with specific examples of Emerging, Developing and Proficient standards for grade 9 Math
Curriculum Tags: MTH1W
https://sites.google.com/lkdsb.com/mth1w-supportmaterials/home

Some nice Outcomes Based Assessment resources from @mr_ian_denham at #OAME2024 todayhttps://t.co/ElWyF97p5b #MathChat #MTBoS #iTeachMath pic.twitter.com/XZv39v5myx

— David Petro (@davidpetro314) May 2, 2024

Have you got an idea for an inspiring math lesson?
Curriculum Tags: All
https://momath.org/rosenthal-prize/

A message for math educators: The Rosenthal Prize application window is open until May 15. Design an innovative, wacky, or otherwise highly communicative math lesson and win up to $25,000. 🧮

View more (including full pdfs of winners below) and apply at https://t.co/RRp1ByXbDs. pic.twitter.com/S0X3c97Z39

— National Museum of Mathematics (@MoMath1) April 30, 2024

A nice activity for Investigating Slope
Curriculum Tags: MTH1W
https://teacher.desmos.com/activitybuilder/custom/662aa7e5bd416f4f49a9f429

Check out this @Desmos activity: Investigating Slope! This is kind of a rip off of the Flags activity, but it gives students some practice using multiple methods to find slope. I like the speedometer on the first slide@desmosclassroom @Amplify #mtbos https://t.co/u1WOdip98o

— Kevin McSorley (@mcsorley_math) April 29, 2024

Video Links

Who doesn't like a good problbailty question connected to Let's Make a Deal?
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1785491626304938039

What's the probability of winning this Let's Make a Deal game? pic.twitter.com/lae04m5xNd

— Howie Hua (@howie_hua) May 1, 2024

Image Links

As always @NatBanting brings it at #OAME2024 but it was fun when he put up this "real world" proportional reasoning problem:
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1786424862031896799

It's @NatBanting giving us help with proportional reasoning with some "real world" questions at #OAME2024 :-)#MathChat #MTBoS #iTeachMath pic.twitter.com/xzTZYOmob2

— David Petro (@davidpetro314) May 3, 2024

Though I never like to use the phrase "99% can't do this" I do like a good problem
Curriculum Tags: Gr7, Gr8, MTH1W

https://twitter.com/GeometryPuzzles/status/1784265697612484620

99 percent fail perimeter of this shape #perimeter #geometry #x pic.twitter.com/hQJ0OQgIfj

— Math Lover (@GeometryPuzzles) April 27, 2024

Great Thinking classroom moves in this sesssion
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/davidpetro314/status/1786487022485381124

Just saw a great session at #OAME2024 from @pgliljedahl & @webbkyle on a full #ThinkingClassrooms lesson and my fav take aways were seeing the consolidation, meaningful note and practice #MathChat #MTBoS #iTeachMath pic.twitter.com/GIu7XNqrBA

— David Petro (@davidpetro314) May 3, 2024