Math Links for Week Ending June 28th, 2024

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I think it's been a while since I saw @Annie_Pk create some of her geometric art. So it's good that she has started back up again.
Curriculum Tags: All
https://x.com/anniek_p/status/1806529053823840298

It seems I wasn’t wrong to skip TV tonight. I’m sure I’ll get the highlights in the next few days. I did this instead. Pattern from Samira Mian’s Patreon.

If your attention is sufficiently grabbed, please check my pinned link. pic.twitter.com/QWLS21hpPf

— Annie Perkins (@anniek_p) June 28, 2024

Resource Links

A simple puzzle that you could use for an opener and I have made a polypad interactive to go with it
Curriculum Tags: All
https://x.com/alexbellos/status/1805128979445076382
https://polypad.amplify.com/p/iZKJCjzGFZicrg

Rearrange two 30-60-90 triangles with no overlaps so the combined shape has a line of symmetry.

Find BOTH solutions

(one of the puzzles from today's column.) pic.twitter.com/OV00K8hGOx

— Alex Bellos (@alexbellos) June 24, 2024

Video Links

It's always good to know the difference
Curriculum Tags: All
https://x.com/RCM_LTTA/status/1806093228598292712

What's the difference between applied and pure math, and how does it affect math learning? Here's what @DrPamB has to say @the_rcm @FieldsInstitute #mathiseverywhere #mathchat @mashupmath @MathletePearce @OAMElearns pic.twitter.com/YcuXJdXFH0

— LTTAatRCM (@RCM_LTTA) June 26, 2024

Geometry to the rescue

Curriculum Tags: MTH1W
https://x.com/Rainmaker1973/status/1804869607141802226

Geometric cut that lets you divide a cake in 32 equal slices.

[📹 muddlethroughmummy]pic.twitter.com/XvUKKHybvn

— Massimo (@Rainmaker1973) June 23, 2024

Image Links

It's pretty cool that this is over 100 years old
Curriculum Tags: All
https://x.com/pickover/status/1804870901344633025

Mathematics.

Imagine the patience required to compute and draw this in 1909.

A hand-drawn graph of the absolute value of the complex gamma function, from "Tables of Higher Functions" by Jahnke and Emde, 1909. pic.twitter.com/53hpplOIcq

— Cliff Pickover (@pickover) June 23, 2024

Math Links for Week Ending June 21st, 2024

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Get ready for the Great Internet Math Off. 16 mathematical Internet personalities will go head to head to do something interesting related to math. And you get to vote for the best. The competition starts in July. So stay tuned. More info at the link below
Curriculum Tags: All
https://aperiodical.com/2024/06/announcing-the-big-internet-math-off-2024/

Resource Links

In Ontario, in our new(ish) grade 9 course there are expectations around number systems and the cultural significance of numbers. This is relatively new for our classes to focus on and so sometimes resources are sparse. That being said, it's great when people lay out a whole lesson that fits it and gives an interesting perspective. Thanks to @MSBJaccobs
Curriculum Tags: MTH1W
https://themathguy.blogspot.com/2024/05/kaktovik-numerals.html

Had a really good time in two Grade 8 classes today learning about the wonderful Kaktovik numerals. A great task for @BTCthinks #ThinkingClassrooms which I followed up with some mild, medium and spicy questions. pic.twitter.com/bEHLiWTwv6

— Michael Jacobs (@msbjacobs) May 27, 2024

Video Links

I like when my Twitter follows collide
Curriculum Tags: MTH1W
https://x.com/jamestanton/status/1803219999617630715

Thanks @howie_hua! Indeed, the word "simplify" in school textbks without context drives me bonkers!
Command: Simplify√20
Response: Looks great as is to me!
All depends on what you want to do next with √20.
Writing up all my radical thoughts herehttps://t.co/gPEvhQgZsc https://t.co/jCHHjQHMMR

— James Tanton (@jamestanton) June 19, 2024

Image Links

I wonder if this should be an individual challenge or a full class challenge
Curriculum Tags: Gr8, MTH1W
https://x.com/jamestanton/status/1803295142427685001

Is it possible to fill in the numbers 1 through 25 in this grid so that all inequalities between numbers (horizontally and vertically) are respected?
What is a necessary and sufficient condition for 2D puzzles like these to be solvable? pic.twitter.com/0Lc1ukkg9D

— James Tanton (@jamestanton) June 19, 2024

Math Links for Week Ending June 14, 2024

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Though it's been out for a few months, I love this new podcast series from @FryRSquared where she looks at the stories behind important sets of data
Curriculum Tags: MDM4U
https://www.bbc.co.uk/programmes/m001qw8x

Resource Links

It's probably not just good for English majors but for any students who struggle with math
Curriculum Tags: All
https://mathwithbaddrawings.com/2024/06/11/math-for-english-majors/

Introducing the book I've always wanted to write.https://t.co/gxRaOoXLMQ

— Ben Orlin (@benorlin) June 11, 2024

Video Links

Is this the oldest math textbook? It's still interesting that some of the problems are the same ones we do today.
Curriculum Tags: All
https://www.youtube.com/watch?v=g_qbIsltNmQ

Image Links

Something to get your kids thinking at the beginning of Math class
Curriculum Tags: All
https://x.com/jamestanton/status/1801898439241867361

What's the least number of blue squares one needs in a 4x4 grid of red and blue squares so that there is no loop of vertical and horizontal step that is all red or all blue?
(For 2x2, one; for 3x3, two.)
The least number for a 5x5 grid? pic.twitter.com/6PATr0T0Cj

— James Tanton (@jamestanton) June 15, 2024

Math Links for Week Ending June 7th, 2024

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It's always good to look at things that may, on the surface, seem reasonable and good with a critical eye. In this case the new financial literacy requirement from the Ontario Ministry of Education
Curriculum Tags: All
https://www.cbc.ca/listen/live-radio/1-39-metro-morning/clip/16071794-math-coordinator-questions-need-rollout-financial-literacy-requirement

If you want to hear my two cents about the financial literacy graduation requirement (spoiler: there’s probably a better concept to choose than that), here’s the interview I was part of today on the radio waves:https://t.co/k8eC0jaBHP

— Jason To | 杜澤信 (@Jason_To) May 31, 2024

Resource Links

It's good to have questions like this if you are a consultant or a math coach working with teachers. 
Curriculum Tags: All
https://x.com/TheRealLindsay2/status/1797731320917045386

All year I have been collecting coaching questions that I have overheard coaches use in practice. Here are all 29 in a handy graphic I made for coaches to save, share, & print. So give it a ❤️ and a RT! 🤩 #educoach #Education pic.twitter.com/ToOiDM3sQ2

— TheRealLindsayDeacon (@TheRealLindsay2) June 3, 2024

Video Links

I like having these types of "fun" questions to give students a reason to need algebra. 
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/1796898658203652202

A "math magic" trick to impress your friends pic.twitter.com/FyhApfTJZe

— Howie Hua (@howie_hua) June 1, 2024

Here is a great connection to combinatorics in something a simple as factoring
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/1798506138729902370

How many factors does 72,000 have?

You might think that's going to take forever to find out, but here's a pretty efficient way of finding the answer and why it works: pic.twitter.com/QoUCaoKoRc

— Howie Hua (@howie_hua) June 6, 2024

Image Links

It turns out that no matter who or how old you are, you think the same about the "best" music
Curriculum Tags: MDM4U
https://x.com/simongerman600/status/1796644071970095244

Based on this logic I will forever love Britney. The chart is right! pic.twitter.com/670nZH1Ods

— Simon Kuestenmacher (@simongerman600) May 31, 2024

Some more fun with algebra 
Curriculum Tags: MPM2D
https://x.com/jamestanton/status/1797546764989579735

Having fun with arithmetic tricks/hacks.
What's going on here and why is it so? pic.twitter.com/eYMItUusSw

— James Tanton (@jamestanton) June 3, 2024

    

Math Links for Week Ending May 31st, 2024

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Which situation would you prefer?
Curriculum Tags: All
https://x.com/wheeler_laura/status/1793217395818942670

A practice I used to depend on but no longer?
I used to to do a lot of board notes in Math followed by "now you try" practice & homework problem sets. But they were mostly mimicking rather than thinking & got stuck the moment anything changed slightly. #BFC530 pic.twitter.com/dkQteEAKrV

— Laura Wheeler (@wheeler_laura) May 22, 2024

Resource Links

Using a number line to solve systems of equations. @FawnPNguyen shows us how in this post
Curriculum Tags: MPM2D

https://www.fawnnguyen.com/teach/my-new-way-of-solving-systems-of-equations

Video/Audio Links

Here is a good problem when dealing with volume of a cone
Curriculum Tags: MTH1W
https://www.youtube.com/watch?v=myvGueynNwM

Here is a cool infinite animation
Curriculum Tags: All
https://x.com/pickover/status/1794152620908814356

Geometry. Mathematics. Forever.

A glimpse of infinity.

From ARC's Instagram, @arc4g, https://t.co/mdA9ZAgw73, Used with permission. "A collaboration with @jn3008." pic.twitter.com/mExhtmPsVF

— Cliff Pickover (@pickover) May 24, 2024

Who doesn't need this in their class? At least to talk about fair probability
Curriculum Tags: MDM4U
https://x.com/FixingEducation/status/1795561512678871219

Perfectly FAIR Spinner! pic.twitter.com/4EcvOL7MDV

— Fixing Education (@FixingEducation) May 28, 2024

An interesting take on the new Ontario Financial Literacy curriculum
Curriculum Tags: MPM2D
https://x.com/Jason_To/status/1796630848415879317

If you want to hear my two cents about the financial literacy graduation requirement (spoiler: there’s probably a better concept to choose than that), here’s the interview I was part of today on the radio waves:https://t.co/k8eC0jaBHP

— Jason To | 杜澤信 (@Jason_To) May 31, 2024

Image Links

I like problems like this because you can use conventional methods (eg elimination) or you can recognize that since you are trying to determine x + y then there is a more efficient way.
Curriculum Tags: MPM2D
https://x.com/mehrdadbas72335/status/1794392320642802061

Simple math question for you...🔥🔥🔥.
Question:
Try to solve the following system?#mathe.#Maths.#Algebra.#Geometry.#Calculus.#ProblemSolving.#test.#Exams.#puzzle.#Science.#evaluation.#solve.#ریاضی.#ریاضیات. pic.twitter.com/bSMqxkRBEp

— Mehrdad Basiry (@mehrdadbas72335) May 25, 2024

There is definitely more than one way to solve this
Curriculum Tags: MTH1W
https://x.com/GeometryPuzzles/status/1793826462166134916

Geometry problem: angles #angle #geometry pic.twitter.com/YUtySJGaaX

— Math Lover (@GeometryPuzzles) May 24, 2024

This could be a good starter
Curriculum Tags: All
https://x.com/pickover/status/1794498886528110677

A strange puzzle, to mystify the world.

What's your guess regarding how many squares can be made, using any 4 points as corners? pic.twitter.com/HlSvBj2e2o

— Cliff Pickover (@pickover) May 25, 2024