Math Links for Week Ending May 26th, 2023

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I have recommended this site before and I don't think that I can recommend it enough. Slow Reveal Graphs start with a graph that has been stripped of context: its numbers, its labels, its title. The teacher facilitates a discussion around what students notice and wonder. Then another slide is revealed with some more (but not all) information. And this continues @JennaLaib does a great job of finding these graphs and creating the slideshows for anyone to use. Here is the latest on the Cities with the Greatest Number of Skyscrapers:
Curriculum Tags: MDM4U
https://slowrevealgraphs.com/2023/05/25/the-cities-with-the-greatest-number-of-skyscrapers/

Resource Links

Here is a nice little interactive for projectile motion:
Curriculum Tags: MCR3U
https://twitter.com/dment37/status/1662114112741036034

The parabolic shot that travels the greatest distance is always that of 45° whatever the initial speed.|3Dvisualisation|Animation|@geogebrahttps://t.co/s8R8SUoBzg#geogebra #math #science #iteachmath #mtbos #visualization #elearning @geometry @bancoche#Physics pic.twitter.com/olSBGeGkkg

— Daniel Mentrard (@dment37) May 26, 2023

Video Links

Working with cubes and algebra? Then maybe try this Mystery Number problem
Curriculum Tags: MPM2D
https://twitter.com/howie_hua/status/1661886435409166342

New TikTok video: A quick "think of a number" trick pic.twitter.com/gaWlP6N98v

— Howie Hua (@howie_hua) May 26, 2023

Image Links

Visualize an infinite series like this and you can make the algebra come to life
Curriculum Tags: MCV4U, MHF4U
https://twitter.com/pickover/status/1661879494792163329

Mathematics and mystery.

Visualizing an amazing infinite sum.

A visual demonstration that (3/4) + (3/16) + (3/64) + ... = 1. pic.twitter.com/t5AJdPspGK

— Cliff Pickover (@pickover) May 25, 2023

Math Links for Week Ending May 19th, 2023

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The folks at @Desmos have been promising this for years and although this is still a beta version, you can really start to see the magic of combining the geometry and graphing calculator tools. Have fun
Curriculum Tags: All
https://blog.desmos.com/articles/geometry-beta-release/

🥳The next generation of the Desmos Geometry Tool is here!

The new (beta) version is now connected with the power & depth of our Graphing Calculator. You can read all about why we built this new, dynamic tool on our blog: https://t.co/qBdMTvrOGC#DesmosGeometryBeta pic.twitter.com/QBad1OtvmA

— Desmos (@Desmos) May 12, 2023

Resource Links

I think the first time I saw this site was in 2016 and I'm glad @TheErickLee reminded me of it. 
Curriculum Tags: MDM4U, MAP4C
https://www.guessthecorrelation.com/#

Reviewing correlation in Math 10 means a chance to play #HRCEmath https://t.co/M39W48yYAM pic.twitter.com/uHKI32ZKnB

— Erick Lee HRCE Math (@TheErickLee) May 16, 2023

If you haven't tried one of @SweenyWSween's @Desmos Escape rooms then here are both of them (look in the comments for the teacher version and the original).
Curriculum Tags: All

https://twitter.com/SweenWSweens/status/1659300193118875653

I made a new escape room in Desmos!
Desmos Escape 2: The Museum
Play it here: https://t.co/D4J7ox6U6z

You don't have to log in, but if you do it saves your progress in case you want to come back to it. pic.twitter.com/0EGvTOS2VS

— Sean Sweeney (@SweenWSweens) May 18, 2023

Video Links

I definitely agree with @Howie_Hua here. But mostly because I think that grading students with percents gives a false sense of precision. Just because we can calculate to the nearest percent (or fraction of a percent) doesn't mean it's accurate. Ask yourself whether you can articulated the difference between a student with an 80% and an 85%. This is really a longer rant but my point is that I don't think that over all (or even on any particular question) we can't realistically expect to measure grades any more accurately than plus or minus 5%. 
Curriculum Tags: All
https://twitter.com/howie_hua/status/1657433824119361543

Why I will always round an 89.9% to an A: pic.twitter.com/Z95C9oT8GG

— Howie Hua (@howie_hua) May 13, 2023

Image Links

Impossible proofs anyone?
Curriculum Tags: All
https://www.quantamagazine.org/when-math-gets-impossibly-hard-20200914/

Many of the most celebrated results in mathematics are proofs of impossibility.

Read the column from our archive: https://t.co/7DKyhG0rJm pic.twitter.com/FTizovug6U

— Quanta Magazine (@QuantaMagazine) May 19, 2023

Math Links for Week Ending May 12th, 2023

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I like when teachers give a deep dive into the deep thinking that goes into and lies around the lessons that they teach. In this case, @AledaKlassen talks about a student that she troubled to connect with and the eventual success she had while working in the structure of the Thinking Classroom. 
Curriculum Tags: All
https://aledaklassened.wordpress.com/2023/05/03/students-do-not-have-to-have-the-same-experience/

This story of a student in my classroom made a lasting impression on me. And this experience comes from a lot of trial and error with #thinkingclassroom practices.https://t.co/F8R7LZucDR… #iteachmath #wrdsbdestreamed #consolidation

— Aleda Klassen (@aledaklassen) May 4, 2023

Resource Links

I like to be reminded of all the very cool resources that can be found on Mathigon.org. In this case, if you are working with Pascal's Triangle then you might be interested in this interactive resource.
Curriculum Tags: MCR3U
https://mathigon.org/course/sequences/pascals-triangle

"Pascal's" triangle has been studied by people around the world, including some that came long before Pascal. In India, it was known as the “Staircase of Mount Meru”. In Persia, the “Khayyam triangle”, and in China, “Yang Hui’s triangle”. Learn more at https://t.co/797WRZZWjO pic.twitter.com/1xaWDsuu42

— Mathigon (@MathigonOrg) May 10, 2023

NCTM Calendar problems, this time from May of 1994
Curriculum Tags: All
https://karendcampe.wordpress.com/2023/05/01/may-calendar-problems/

New Blog Post! May Calendar Problems#ProblemSolving #MTBoS #iTeachMath #T3Learns https://t.co/dAWXX4KqQw

— Karen Campe (@KarenCampe) May 1, 2023

One of the great things about the "math Twitter verse" is the ability to ask a question and get an answer. In this case We have a question about this activity structure called a "math market". You get a hint of it in @MaryBourassa's post but you get the actual structure of the activity in the comments. Be sure to take a look. 
Curriculum Tags: All
https://twitter.com/MaryBourassa/status/1655690321743732737

Dear #MTBoS,
I have a set of "vectors math market" cards but I do not remember how this math market is supposed to work - are they buying questions and selling me answers??? I'm sure I borrowed the idea from one of you brilliant people - I'm hoping someone can refresh my memory. pic.twitter.com/EBxtqcccRK

— Mary Bourassa (@MaryBourassa) May 8, 2023

Video Links

And a bit more of Pascal's Triangle
Curriculum Tags: MCR3U
https://twitter.com/Ayliean/status/1655173640860598272

Oh Pascal you rascal! pic.twitter.com/1EqWVhK3Rq

— Ayliean (@Ayliean) May 7, 2023

Image Links

Are you looking for an interesting problem that connects to Pythagorean Triples?
Curriculum Tags: Gr8, MTH1W
https://twitter.com/dment37/status/1656904717119766529

Blue area ?@geogebra #geogebra pic.twitter.com/Ix2JKGZtUO

— Daniel Mentrard (@dment37) May 12, 2023

Math Links for Week Ending May 5th, 2023

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I think this may have been one of the first things that I saw from @RobertKaplinski and I immediately loved it. The whole idea of kids just trying to slam numbers into the situation in order to solve a non sensical problem was intriguing. And it lead to finding all kinds of other great resources on his site. If you haven't seen this, follow the link and watch the video and get the other resources and then check out all the other stuff you can find.
Curriculum Tags: All
https://twitter.com/robertkaplinsky/status/1654253074024734725

How do you think your students would respond to the question "There are 125 sheep and five dogs in a flock. How old is the shepherd?"
Watch how 32 eighth graders I interviewed responded. https://t.co/vI9iiwqpKn pic.twitter.com/17GdCGBmIk

— Robert Kaplinsky (@robertkaplinsky) May 4, 2023

Resource Links

I think that you can use this with your students to remind them that all work and no play is not healthy
Curriculum Tags: All
https://twitter.com/MathsCirclesOz/status/1653127443933175811

How to study like a world-class mathematician:

1. Focused work: 3 hours in the morning
2. Daydreaming & long walks: all afternoon.

June Huh won the highest honour in mathematics, the Fields Medal, in 2022.

Image source: Quanta Magazine pic.twitter.com/IGLgqY12nS

— Michaela Epstein (@MathsCirclesOz) May 1, 2023

Video Links

I think that when doing probability questions, it's important to ground them in reality (even if reality may be bent a bit :-) )
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1652078038610513920

In both of these probability questions, you know at least one 1 was rolled. But are the answers the same or different based on what I know? pic.twitter.com/DA2geB9LLC

— Howie Hua (@howie_hua) April 28, 2023

Using "Would You Rather" as a prompt you can turn a relatively mundane topic into something more interesting. And if you want more prompts like this, try @JStephens site WouldYouRather.com
Curriculum Tags: All
https://twitter.com/howie_hua/status/1652324245727514625

I turned one of my most boring math lessons into one of my most engaging ones. Here's how: pic.twitter.com/jEEM2J5hWE

— Howie Hua (@howie_hua) April 29, 2023

Alright, live tessellations.
Curriculum Tags: All
https://twitter.com/RickMohr2/status/1652263814891446273

https://t.co/HlhZT0N0w5 is live, with "tessellations" from artists around the world, where a figure repeats to fill the page with no overlaps or gaps. See the art, understand how it works, and create your own. (Free, with no ads.) Enjoy the site, and please share! pic.twitter.com/hesfZGjP0Q

— Rick Mohr (@RickMohr2) April 29, 2023

Image Links

It was a great couple of days at last week's OAME conference. It was good to see some familiar faces that I hadn't seen face to face in so long. Hopefully you can have some meaningful face to face connections this year too:
Curriculum Tags: All
https://twitter.com/GLewisOCT/status/1652487910493413384

I'm humbled by the connections we make with our district friends at @OMCAmath @OAMElearns - Success stories, common challenges, shared vision drive me to innovate and problem solve in our systems #OAME2023 @paul_math @HTheijsmeijer @davidpetro314 @TeatherBoard 3/x pic.twitter.com/fPZEt9tawk

— Gerard Lewis, OCT (@GLewisOCT) April 30, 2023

Clever :-)
Curriculum Tags: All
https://twitter.com/howie_hua/status/1654079303724720129

May the fourths be "with you" pic.twitter.com/EY5if0FeIS

— Howie Hua (@howie_hua) May 4, 2023

Who knew that ngons with sides that are multiples of 4s had this property?
Curriculum Tags: MCR3U, MHF4U
https://twitter.com/diegorattaggi/status/1158115642425430016

Did you know this before? #mathiratti pic.twitter.com/jMxhckIWAT

— Diego Rattaggi 🇨🇭 (@diegorattaggi) August 4, 2019