Math Links for Week Ending Apr. 26th, 2024

Featured Links

@Howie_Hua continues his series on small tweaks that make a big difference
Curriculum Tags: All
https://twitter.com/howie_hua/status/1782920372159148046

Small changes, big impacts in the classroom part 6: Asking myself "What experiences do I want my students to have today?" helps me create my lessons. pic.twitter.com/EkQaPYymk6

— Howie Hua (@howie_hua) April 23, 2024

Resource Links

That's a pretty cool way to show how a simple translation can produce a neat effect. See the comments for the actual sketch
Curriculum Tags: All
https://www.desmos.com/geometry/iu06b6o3jf

When was the last time you adjusted the focus on your calculator? #mathart #illusion #opticalillusion #geometricart #mathteacher pic.twitter.com/V9TPCQ9sue

— Desmos (@Desmos) April 18, 2024

What is neat about this is the fact that it's made up of (a lot) of relatively simple functions. 
Curriculum Tags: MHF4U
https://twitter.com/Desmos/status/1782465252744949856

It's a good day to go outside. #EarthDay2024 pic.twitter.com/bbTQpJCkqr

— Desmos (@Desmos) April 22, 2024

The Taylor Swift swear word graph is pretty cool
Curriculum Tags: MDM4U
https://twitter.com/jennalaib/status/1782156651157455033

Data can become outdated quickly. I try to add graphs to the Slow Reveal Graphs website that I think will have some longevity. That said, recent events reminded me of graphs currently on the site, like a few that I did about WNBA salaries. 🤔 https://t.co/UzQN9o43MA

🧵 1/3

— Jenna Laib (@jennalaib) April 21, 2024

Video Links

Everyone loves math :-)
Curriculum Tags: All
https://twitter.com/joelbezaire/status/1782032747361431918

My interests converging 👀#TOTHECORE #mtbos #iteachmath https://t.co/fUJZpXao21

— Joel Bezaire (@joelbezaire) April 21, 2024

A nice connection between coding and probability. Check the other examples in the comments
Curriculum Tags: MTH1W
https://twitter.com/matthen2/status/1543226572592783362

give each pixel a random Pokemon type, and then battle pixels against their neighbors, updating each pixel with the winning type (using the Pokemon type chart)

we quickly see areas of fire > water > grass > fire, electric sweeping over, ground frontiers taking over etc etc pic.twitter.com/BHgQuKRApR

— Matt Henderson (@matthen2) July 2, 2022

A nice animation for a nice relationship
Curriculum Tags: MTH1W
https://twitter.com/pickover/status/1783620295040942191

Mathematics.

Dreaming of the Unit Cube, a symbol of a Platonic realm and mysteries to be uncovered.

Visualization by Idan Tal, @MagicPi2, Used with permission. pic.twitter.com/q7onwEERAb

— Cliff Pickover (@pickover) April 25, 2024

Image Links

Similar to the four 4s challenge
Curriculum Tags: All
https://twitter.com/mathequalslove/status/1782894609871344074

Eights Number Challenge - Using exactly four eights, add arithmetical symbols between to eights to make each of the target numbers. - from Pierre Berloquinhttps://t.co/7oFnMgweyg #mtbos #iteachmath #puzzlingclassroom pic.twitter.com/3M6vgQCZ0c

— Sarah Carter (@mathequalslove) April 23, 2024

Math Links for Week Ending Apr. 19, 2024

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This is cool. A mash up of my current favourite #math podcast and one of my favourite gotos for Internet math content
Curriculum Links: All
https://www.maththerapypodcast.com/share

Resource Links

When this was part of our curriculum it was one of my favourite things to teach. Tim gives a couple of great proofs but one thing I always tried to get out was the connection of the infinite repeating decimal and the unit value. It always led to some great discussions in any course about the meaning of infinity. 
Curriculum Tags: MTH1W, MPM2D, MCR3U, MCV4U
https://twitter.com/TimBrzezinski/status/1781129335425945838
https://twitter.com/TimBrzezinski/status/1781271783049466316

This one raised some eyebrows on both TikTok and Instagram earlier today.

One way that suggests why
0.999999999…(repeating infinitely) is not almost, but EXACTLY equal to 1 pic.twitter.com/B6J68ydMuO

— Tim Brzezinski (@TimBrzezinski) April 19, 2024

Convergent geometric series are cool! pic.twitter.com/XjcAoMMzcC

— Tim Brzezinski (@TimBrzezinski) April 19, 2024

Video Links

Nature and geometry certainly mix well
Curriculum Tags: All
https://twitter.com/gunsnrosesgirl3/status/1781212569882988608

The perfect geometry of Hoya flowers

five-pointed double-star shapes that bloom from a sphere called an umbel

📹 The_cheeky_seedling
pic.twitter.com/5x4YrXqSUy

— Science girl (@gunsnrosesgirl3) April 19, 2024

Image Links

I would love to have a hi resolution version of this. 
Curriculum Tags: All
https://twitter.com/CmonMattTHINK/status/1779587946351350159

The first two hundred factorials.
What do you notice?
What do you wonder? pic.twitter.com/KAenU0dDhb

— Matt Enlow (@CmonMattTHINK) April 14, 2024

When Per capita doesn't help
Curriculum Tags: MDM4U

https://twitter.com/jennalaib/status/1779649315704602695

😳

…and the nerd in me was like, “oh, but what if we displayed the data per capita instead of total serial killers?”
Didn’t help.
Via @DatavizAdventuR (Enrique Mendoza) pic.twitter.com/NzfauHj3Ws

— Jenna Laib (@jennalaib) April 14, 2024

I like this because you could use brute force and count all the hexagons or you could just find the shape that tiles the plane and count the squares on that one.
Curriculum Tags: All
https://twitter.com/JimPropp/status/1779515743362502860

What fraction of the tiles are black? How did you get your answer? pic.twitter.com/dcncNprZ3l

— James Propp (@JimPropp) April 14, 2024

Math Links for Week Ending Apr 12th, 2024

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I think that any time we can learn to adjust our teaching to help those who need it the most, it's a good thing
Curriculum Tags: All
https://twitter.com/fawnpnguyen/status/1776054312374091997

👏 We've been waiting for @mathematize4all 's book
𝙍𝙚𝙩𝙝𝙞𝙣𝙠𝙞𝙣𝙜 𝘿𝙞𝙨𝙖𝙗𝙞𝙡𝙞𝙩𝙮 𝙖𝙣𝙙 𝙈𝙖𝙩𝙝𝙚𝙢𝙖𝙩𝙞𝙘𝙨: 𝘼 𝙐𝘿𝙇 𝙈𝙖𝙩𝙝 𝘾𝙡𝙖𝙨𝙨𝙧𝙤𝙤𝙢 𝙂𝙪𝙞𝙙𝙚 𝙛𝙤𝙧 𝙂𝙧𝙖𝙙𝙚𝙨 𝙆-8
to come out!
You can pre-order it here: https://t.co/wqybB1glcQ

— Fawn Nguyen (@fawnpnguyen) April 5, 2024

Resource Links

Need some quick math problems? How about 300?
Curriculum Tags: All
https://twitter.com/MathsEdIdeas/status/1776204549318914369

Random Acts of Maths — over 300 pocket-sized problems, teasers, curios, provocations, inspirations, etc., for teachers to gift to students, school visitors, et al. Free to download, with solutions and slides: https://t.co/f3zOPcJxh4 • #maths #math #MTBos #iteachmath pic.twitter.com/r0HnUzupv6

— Maths Ed (@MathsEdIdeas) April 5, 2024

I love that @JamesTanton keeps making these freely available
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/jamestanton/status/1777048688210378940

Just finished a draft of chapters on Fractions.
What a muddle in the typical school curriculum!

Did I sort out the muddle? Is my take on things helpful? I think I've got my thinking of the past number of years in line now. (But let me know!)
Enjoy!https://t.co/gPEvhQhxhK… pic.twitter.com/VR4QSj2wKD

— James Tanton (@jamestanton) April 7, 2024

The @Desmos version of the eclipse
Curriculum Tags: All
https://www.desmos.com/geometry/gtbsefxi4q

Not in the path of totality this time? We can't promise it's the same effect, but at least this graph requires no special glasses: https://t.co/QZlI5lA8I2 #eclipse2024 #solareclipse #eclipsemath pic.twitter.com/SzEtIp5kNh

— Desmos (@Desmos) April 7, 2024

Video Links

It's always good to have clarity
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1778548048790237191

Viewer request: Why does nC2=n(n-1)/2? pic.twitter.com/SV070p1s4h

— Howie Hua (@howie_hua) April 11, 2024

Image Links

Another set of data that reveals the path of the eclipse
Curriculum Tags: MDM4U
https://twitter.com/kathyhen_/status/1778170648201994630

@jennalaib why do I see this as a #SlowRevealGraph? 🤣 https://t.co/apk4QeNEBK

— Kathy H (@kathyhen_) April 10, 2024

I think if you are dealing with Pythagorean theorem and also want to show how math can be beautiful then this might help.
Curriculum Tags: Gr8, MTH1W
https://twitter.com/pickover/status/1778244703013515761

Welcome to Mathematical Nirvana.

The double cube has distances between corners equal to the square roots of the first six natural numbers, by the Pythagorean theorem.

Source (Rachel Fletcher): https://t.co/EcpXd5Ig29 pic.twitter.com/i6zM1iNIy7

— Cliff Pickover (@pickover) April 11, 2024

Math Links for Week Ending Apr 5th, 2024

Featured Links

Visual proofs are always good, especially when they are dynamic
Curriculum Tags: Gr8, MTH1W
https://twitter.com/Rainmaker1973/status/1774110380781899809

A brilliant visualization of the Pythagorean theorem

[🎞️ Mathematical Visual Proofs]pic.twitter.com/ehXipfzo6Y

— Massimo (@Rainmaker1973) March 30, 2024

Resource Links

This might seem like a simple combinatorics problem but look closer, it's a little more complex. So definitely use combinatorics and cases
Curriculum Tags: MDM4U
https://twitter.com/jamestanton/status/1775448403503190201

There are 13 distinct ways to underscore some or all or none of three consecutive letters. How many ways are there to do the same for four letters?

Looking forward to visiting the folk at https://t.co/SJFQRPT9b4 later this week! Giving a talk on the Bee Numbers. Come along! pic.twitter.com/m0KiPi3FjN

— James Tanton (@jamestanton) April 3, 2024

Video/Audio Links

I love when data reveals something it wasn't planning to
Curriculum Tags: MDM4U
https://twitter.com/Jamie_Lane/status/1775281707358335296

With the eclipse approaching in less than a week, over half of U.S. cities along the eclipse's path are fully booked for the night of April 7th according to data from @airdna pic.twitter.com/SLVpyKu2Oe

— Jamie Lane (@Jamie_Lane) April 2, 2024

It's not the latest episode but I like talk when it focuses on things like clarifying equality and equity
Curriculum Tags: All
https://www.maththerapypodcast.com/

Image Links

This seems simple but be careful
Curriculum Tags: MDM4U
https://twitter.com/RHSTUDYZONE/status/1775750273840898295

pic.twitter.com/gss77t19nw

— RAMZ E HAQ STUDY ZONE (@RHSTUDYZONE) April 4, 2024

Math Links for Week Ending Mar 29th, 2024

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Seeing this list of math videos by topic makes me think that I should look back at my old BlockBuster Math presentation about Math in Movies and TV. I literally have tonnes of clips on a hard drive that must exist other places. Gives me something to do in compiling that.
Curriculum Tags: All
https://mathsedideas.blogspot.com/p/video.html

A catalogue of links to >150 mathsy videos and clips — arranged by theme — for teaching hooks, curriculum enrichment, or just to dip into, relax, share, and enjoy. Including from @tweetsauce @veritasium @3blue1brown @Ri_Science @OxUniMaths and more: https://t.co/Rzigr3Lptb

— Maths Ed (@MathsEdIdeas) March 28, 2024

Resource Links

The latest classic @NCTM calendar posted by @KarenCampe
Curriculum Tags: All
https://twitter.com/KarenCampe/status/1773728516154011920

It's a good Friday to do some #ProblemSolving from the March Calendar of Problems!
Solutions coming soon & April calendar is around the corner...#MTBoS #iTeachMath #T3Learns#Algebra #Geometry #MathChat https://t.co/6YR7gQApNM

— Karen Campe (@KarenCampe) March 29, 2024

A nice Pythagorean puzzle. Here is my solution.
Curriculum Tags: Gr8, MTH1W
https://twitter.com/jamestanton/status/1772910933142384761

Three squares constructed on the sides of a right triangle. Where exactly is the point P along the hypotenuse of the triangle that indicates where to split the large square into two rectangles with areas matching those of the small squares as shown? pic.twitter.com/A1kr3uXKpi

— James Tanton (@jamestanton) March 27, 2024

Fun with number theory
Curriculum Tags: MTH1W

https://twitter.com/MathsEdIdeas/status/1772320908184567948

89 is a ‘disarium’ number, i.e., the sum of its digits powered with their respective positions is equal to the number itself. Like:

12157692622039623539 = 1¹ + 2² + 1³ + 5⁴ + 7⁵ + 6⁶ + 9⁷+ 2⁸ + 6⁹ + 2¹⁰ + 2¹¹ + 0¹² + 3¹³ + 9¹⁴ + 6¹⁵ + 2¹⁶ + 3¹⁷ + 5¹⁸ + 3¹⁹ + 9²⁰

— Maths Ed (@MathsEdIdeas) March 25, 2024

Video Links

This might be a fun survey to do in your school. But it is pretty fascinating how 37 shows up a lot.
Curriculum Tags: All
https://youtu.be/d6iQrh2TK98?si=l2Ito68nu9wrfezw

A classic puzzle
Curriculum Tags: All
https://twitter.com/howie_hua/status/1773357260921598181

A fun checkerboard puzzle pic.twitter.com/r8qX8i2bpN

— Howie Hua (@howie_hua) March 28, 2024

Image Links

Bad stats in action
Curriculum Tags: MDM4U
https://twitter.com/indepmofan_/status/1773397064640270509

graph crime being committed in front of our eyes https://t.co/9qpMcE05iV

— RN HTF 🇺🇸 (@indepmofan_) March 28, 2024

Some good use of fractions could help here
Curriculum Tags: All
https://twitter.com/dment37/status/1772180241965781341

Blue area? pic.twitter.com/2TkWFlmBy8

— Daniel Mentrard (@dment37) March 25, 2024

Math Links for Week Ending Mar 22nd, 2024

Featured Links

There are many good things here, not just quotes.
Curriculum Tags: All
https://mathsedideas.blogspot.com/p/resources.html

A set of 100 mathematical quotes, curios, provocations, etc., to colour our corridors with mathematics. For free downloads including an editable versions: https://t.co/enWt5ZNqwk pic.twitter.com/e6DynlTEAa

— Maths Ed (@MathsEdIdeas) March 20, 2024

Resource Links

Here is an engaging way to talk about rational and irrational numbers
Curriculum Tags: MTH1W
https://teacher.desmos.com/activitybuilder/custom/65f8b15cb49a4c806d490769

Created a @desmosclassroom activity as an introduction to irrational numbers for my Math 10 students. The animated card sort feedback screens from @Johnston_MSMath are so fun! #ITeachMath https://t.co/Hahg3qsDQ8 pic.twitter.com/bjITPpJTeB

— Erick Lee HRCE Math (@TheErickLee) March 19, 2024

Video Links

If you want to go deeper with transformations then this is actually pretty cool
Curriculum Tags: MCR3U
https://youtu.be/1LCEiVDHJmc?si=EHcQMrUJK4rR9Ggb

Image Links

I never miss a chance to hear @NatBanting speak. We were lucky to have him speak locally. Be sure to check out all his resources at NatBanting.com
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1771317850470302009

Last night @NatBanting spoke to a small group of our local @OAMEcounts members. Among other things, this was my favourite slide:
“Math is most potent when experienced, not when explained” #MathChat #MTBoS #MathChat pic.twitter.com/1p529EUOxD

— David Petro (@davidpetro314) March 22, 2024

Math Links for Week Ending Mar 15, 2024

Featured Links

I love thinking about other ways to grade student work. There are some great ideas here if you are looking for some change
Curriculum Tags: All
https://gradingforgrowth.com/p/20-small-starts-for-alternative-grading

Today at Grading For Growth, I give 20 ways to get started with alternative grading on a small scale. Some of these are simple shifts in approach, while some are more concrete. But they are all good for students!#alternativegrading #highereducationhttps://t.co/tCsnkwm4oQ

— Robert Talbert (@RobertTalbert) March 11, 2024

Resource Links

I feel like you could do a lot of fun things in just about any class with this resource. 
Curriculum Tags: All
https://www.eatmy.art/

Playing with https://t.co/hH68olMjFJ today in class. Super easy to make animated gif images. #ITeachMath pic.twitter.com/VLumeSpQfv

— Erick Lee HRCE Math (@TheErickLee) March 8, 2024

Some more Pi Day resources
Curriculum Tags: All

https://mathsedideas.blogspot.com/2018/02/on-pi-day.html

A collection of activities for #PiDay… π history. π formulae. π birthdays. π primes. π puns and jokes. π art. Fake proofs for π. Memorising π. Continued fractions for π. Pilish. The music of π. Plus links to film, audio, websites, and articles. And more… https://t.co/SysSa3AO6R

— Maths Ed (@MathsEdIdeas) March 11, 2024

https://static1.squarespace.com/static/5436e695e4b07f1e91b30155/t/5504cbf1e4b00ffe1406e552/1426377713470/why-pi-matters.pdf

Why Pi Matters (from @NewYorker in 2015)https://t.co/n4GRBlUfUx

PDF for non-subscribers: https://t.co/c05o0asfX1

— Steven Strogatz (@stevenstrogatz) March 14, 2024

https://www.desmos.com/geometry/nm34xeu8xk

Not like we need an excuse to open up the Desmos Geometry tool, but this Archimedes-inspired strategy for approximating pi is a pretty good one. Happy Pi Day!#piday #PiDay2024 #geometry #mathproof #mathteacher pic.twitter.com/QUVhCsq5wZ

— Desmos (@Desmos) March 14, 2024

A nice visual showing sinusoidal relations
Curriculum Tags: MCR3U, MCF3M

https://twitter.com/historyinmemes/status/1767287126629245082

How to explain the math in a simple way pic.twitter.com/Ch6LVtLzpG

— Historic Vids (@historyinmemes) March 11, 2024

I have my own list of Math based podcasts (here) but this is another one and I love the way that it is organized by topic. 
Curriculum Tags: All

https://mathsedideas.blogspot.com/p/mathematics-audio-documentaries.html

An updated catalogue of links to ≈ 400 mathsy radio and podcast programmes — to dip into, relax to, share, and enjoy. Including from @stevenstrogatz @FryRsquared @alexbellos @SLSingh @tomrocksmaths @d_spiegel and many more: https://t.co/ANOXtRBZ2i

— Maths Ed (@MathsEdIdeas) March 14, 2024

Video Links

Here's a fun little proof that you could do when talking about prime numbers
Curriculum Tags: MTH1W
https://twitter.com/howie_hua/status/1766452571760402904

Did you know all prime numbers are one away from a multiple of 6 (besides 2 and 3)? Here's how we know: pic.twitter.com/D88M5qPhKp

— Howie Hua (@howie_hua) March 9, 2024

A nice representation with the Olympics coming up
Curriculum Tags: Gr7, Gr8, MDM4U
https://twitter.com/jennalaib/status/1766634206694670345

Love this one! I'm wrapping around my head around the fact that it was 2:1 male to female when I was a kid! 🤯

Here's to it being 1:1, and maybe even 1:1:x in the future, to be more inclusive... https://t.co/QJUv1vCLYL

— Jenna Laib (@jennalaib) March 10, 2024

Here is a nice visual proof of the sum of squares 
Curriculum Tags: MCR3U
https://en.etudes.ru/models/sum-of-squares/

The Sum of Squares, with a geometric proof 🧱🧱🧱https://t.co/QLGWAHfjNw (by Mathematical Etudes)#math #science #iteachmath #mtbos #visualization #elearning #geometry pic.twitter.com/AKcIuWvzHi

— Tungsteno (@74WTungsteno) November 8, 2021

Image Links

I like this because you could solve it rather elegantly with algebraic manipulation or use a more brute force method by just evaluating the powers.
Curriculum Tags: MTH1W
https://twitter.com/mehrdadbas72335/status/1767120608284799103

Easy question for you...🔥🔥🔥.
Question:
Try to find the value of x?#mathe.#Maths.#Algebra.#Geometry.#Calculus.#ProblemSolving.#test.#Exams.#puzzle.#Science.#evaluation.#solve.#ریاضی.#ریاضیات. pic.twitter.com/cjFf9yldMt

— Mehrdad Basiry (@mehrdadbas72335) March 11, 2024

Perhaps writing this in a simpler form will help?

Curriculum Tags: MTH1W
https://twitter.com/mehrdadbas72335/status/1767473786075656683

Easy question for you...🔥🔥🔥.
Question:
Try to find the value of following expression?#mathe.#Maths.#Algebra.#Geometry.#Calculus.#ProblemSolving.#test.#Exams.#puzzle.#Science.#evaluation.#solve.#ریاضی.#ریاضیات. pic.twitter.com/eszuMYrRzb

— Mehrdad Basiry (@mehrdadbas72335) March 12, 2024

Throwing shade on the standard algorithm

Curriculum Tags: All
https://twitter.com/Mathgarden/status/1767164834540343342

pic.twitter.com/AbErJVB5u9

— Sunil Singh (@Mathgarden) March 11, 2024

Here is a great problem to use when applying circle theorems
Curriculum Tags: MTH1W
https://twitter.com/sonukg4india/status/1767406915251044827

#Puzzled pic.twitter.com/9JU1PWCTxW

— SKG (@sonukg4india) March 12, 2024

I make this joke all the time
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C, MAP4C

https://twitter.com/thescottbarber/status/1767740512017293512

Jesus teaching only in parabolas pic.twitter.com/b8Yty5VTVx

— Scott Barber (@thescottbarber) March 13, 2024

    

Math Links for Week Ending Mar 8th, 2024

Featured Links

My comment about this is that this is now the nail in the coffin for traditional teaching (just telling kids stuff)
Curriculum Tags: All
https://twitter.com/ddmeyer/status/1765485851851538854

Here is an interaction I just had with a chatbot. If this was a teacher you were coaching, what would be your feedback? pic.twitter.com/ogSc0K7350

— Dan Meyer (@ddmeyer) March 6, 2024

Resource Links

I made this investigation to look at various circle theorems. However, I made two versions. One that requires much more construction and one that has far less (so it takes less time). Get them both at the link below:
Curriculum Tags: MTH1W
https://engaging-math.blogspot.com/p/desmos-activities_10.html

[New @Desmos Activity] Students Investigate circle theorems using the short version (minimal construction) or the long version (more construction) of this @DesmosClassroom activity https://t.co/JUNFclWxKi#MathChat #MTBoS #iTeachMath #MTH1W pic.twitter.com/QSgmabGist

— David Petro (@davidpetro314) March 8, 2024

Here is a nice set of dynamic visualizations for Circle theorems
Curriculum Tags: MTH1W
https://twitter.com/dment37/status/1765661861112938843

Circle theorems
Visualization |Animation | Interactive applet@geogebrahttps://t.co/s8R8SUoBzg#geogebra #math #science #iteachmath #mtbos #visualization #elearning @bancoche #Physics pic.twitter.com/SR2DoQkCwW

— Daniel Mentrard (@dment37) March 7, 2024

Do you want a reason to look at the distance formula on the coordinate plane? Then look no further
Curriculum Tags: MPM2D, MCR3U, MCF3M
https://robertkaplinsky.com/work/toys-r-us/

Sadly, there are no longer Toys 'R Us stores, but the context remains. How does a computer know how far away a store is away from you? It's similar to finding distance on a coordinate plane. https://t.co/t0jmdqBNzL pic.twitter.com/5U8gSszzs8

— Robert Kaplinsky (@robertkaplinsky) March 1, 2024

Thanks @JamesTanton for sharing this free resource. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/jamestanton/status/1764025344045019377

A draft of Chapter 3 of COLLEGE ALGEBRA FOR HUMANS is done. (Here are chapters 1, 2, and 3.) https://t.co/gPEvhQgZsc
I am rewriting and tightening up all my algebra notes and thoughts into one tome. I think I properly tightened up making sense of the AREA MODEL for arithmetic… pic.twitter.com/eMnp2N3n39

— James Tanton (@jamestanton) March 2, 2024

It's always nice to have extra problems for your Thinking Classrooms
Curriculum Tags: All
https://twitter.com/MathforLove/status/1764682957351231830

One of my favorites!

Here’s a fun extension of that problem - https://t.co/DclJ9GT5t9

— Dan Finkel (@MathforLove) March 4, 2024

Need a resource on Conics?
Curriculum Tags: MCR3U
https://twitter.com/MathigonOrg/status/1764667238815047690

Where do circles, ellipses, hyperbolas, and parabolas like to hang out in the summer?
Coney Island! You can make many shapes by pointing a light onto a flat surface. They might look quite different but have many properties in common. Learn more at https://t.co/zGPijgDfnx pic.twitter.com/dvR3vIOT2D

— Mathigon (@MathigonOrg) March 4, 2024

Perfect if you are dealing with your students learning about finding sidelengths with trig ratios. 
Curriculum Tags: MPM2D, MFM2P, MBF3C
https://twitter.com/TimBrzezinski/status/1764976336521527590

Here, a quick journey at my attempt to thin slice a conceptual exploration where Ss use trig ratios to solve for unknown sides of right triangles: https://t.co/iwxGfAUDcs @pgliljedahl #MTBoS #ITeachMath @thinkingclassrm @geogebra pic.twitter.com/1s4V7K587Y

— Tim Brzezinski (@TimBrzezinski) March 5, 2024

The thing I like most about this is the fact that it shows that, for the most part, effective teaching has bits of all the researched based ideas in proportions based on you. And those proportions vary from person to person when it comes to what is effective. But regardless I like @Jason_To's even keel treatment of this.
Curriculum Tags: All

https://twitter.com/Jason_To/status/1764631181734076612

Many pro-direct instruction folks are using a recent article from BNN as evidence against inquiry-based learning, thinking classrooms, etc.

I respect these people as educators who, like me, want what's best for students.

But, let's dig into what this study actually tells us. https://t.co/m9EY14Rbw0

— Jason To | 杜澤信 (@Jason_To) March 4, 2024

Get ready for PiDay with my collected Pi resources
Curriculum Tags: All
https://ca.pinterest.com/davidpetro314/pi-day/

Need some #PiDay resources?

Here is my collection including the hidden reference to Pi in the @RollingStones logohttps://t.co/PPVZPnsta8#MathChat #MTBoS #iTeachMath pic.twitter.com/fU1OHkMOKd

— David Petro (@davidpetro314) March 8, 2024

Video/Audio Links

I maybe a Desmos boy now but I used to be a TI boy so I still appreciate tips like this
Curriculum Tags: All
https://twitter.com/TICalculators/status/1763674911896183231

😮 Bet you didn't know this one. Split Screen?! 🤯🤯🤯#Iteachmath #math #teachertwitter #tips #mathnerd #mathstudent pic.twitter.com/Ec2ciacGXZ

— Texas Instruments Education (@TICalculators) March 1, 2024

Some Pi Day podcast stories
Curriculum Tags: All
https://twitter.com/storycollider/status/1765678904537149822

In honor of #PiDay, tomorrow's episode @DarthScience & @professorteds whisk you away on a journey filled with math and pastry. No matter if you're calculating circumference or slicing into a sweet treat, there's always a story to be savored. Listen wherever you get your podcasts! pic.twitter.com/G7351sfdgV

— The Story Collider (@storycollider) March 7, 2024

I'm a big fan of using zeros to subtract with integers
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/howie_hua/status/1765892156873662575

We don't always have to rely on "two negatives make a positive" when subtracting negatives. Here's another way to think about it. pic.twitter.com/FU84rlO4RO

— Howie Hua (@howie_hua) March 8, 2024

Image Links

Here is a grab from their more interactive mathematician resource 
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1763580073800577495

Next Friday is International Women's Day and is a good day to explore our all-female version of our timeline of mathematics. Can you find the mathematician with an Erdős number of 1? Download at https://t.co/VZjByDDSpO pic.twitter.com/9mwgivSuQB

— Mathigon (@MathigonOrg) March 1, 2024

How could you do on this?

Curriculum Tags: All
https://twitter.com/Anthony_Bonato/status/1764641712247394344

How would you fare in this Harvard math entrance exam? The exam was given in 1869, so no calculators allowed! pic.twitter.com/fCycZk1QrC

— Anthony Bonato (@Anthony_Bonato) March 4, 2024

Some nice proportional reasoning here
Curriculum Tags: MTH1W
https://twitter.com/gunsnrosesgirl3/status/1765471306764427691

What do you think? pic.twitter.com/kFoP8M5n41

— Science girl (@gunsnrosesgirl3) March 6, 2024

Even if you didn't make a slow reveal graph out of this, I think it would still be a good discussion with students about how long they take their showers. 
Curriculum Tags: MDM4U
https://twitter.com/davidpetro314/status/1766070035779391750

Hey @jennalaib this looks like a great candidate for a slow reveal graph https://t.co/JByZBUNYhi

— David Petro (@davidpetro314) March 8, 2024

    

Math Links for Week Ending Mar 1st, 2024

Featured Links

I like a little app like this for practice. We are all interested in multiple representations of linear relations. So it's nice to have a practice problem like this with randomized problems and constraints. 
Curriculum Tags: MTH1W
https://www.geogebra.org/m/xhkdam8n

Check out this interactive @geogebra applet where ss can #MathPlay🧮 with slope (rate of change) by comparing different representations for it🏎️🏁 #ITeachMath #MTBoS #STEM #MathIsFun #MathChat #MathRocks #Math #Maths #EdChat #EdTech

🔗https://t.co/9yYz4sNqGN pic.twitter.com/xg6Mzc5gYp

— Libo Valencia 🧮 MathPlay (@MrValencia24) February 28, 2024

Resource Links

The latest "Classic" set of @NCTM calendar problems
Curriculum Tags: All
https://karendcampe.wordpress.com/2024/03/01/march-calendar-problems-2/

New blog post! March Calendar Problems. #MTBoS #iTeachMath #T3Learns #ProblemSolving #RecreationalMathhttps://t.co/6YR7gQApNM

— Karen Campe (@KarenCampe) March 1, 2024

This could be a great starter in any math class to help with basic calculations but beyond that it's a cool property
Curriculum Tags: All
https://twitter.com/MathsEdIdeas/status/1763342511731306536

1
=
1×1×1

512 =
(5+1+2)×(5+1+2)×(5+1+2)

4913 =
(4+9+1+3)×(4+9+1+3)×(4+9+1+3)

5832 =
(5+8+3+2)×(5+8+3+2)×(5+8+3+2)

17576 =
(1+7+5+7+6)×(1+7+5+7+6)×(1+7+5+7+6)

19683 =
(1+9+6+8+3)×(1+9+6+8+3)×(1+9+6+8+3)

The Dudeney numbers.
There are no more.

— Maths Ed (@MathsEdIdeas) February 29, 2024

Video Links

I like these Pythagorean area examples. You can either watch the videos or doing them yourself by using the Polypad file
Curriculum Tags: Gr8, MTH1W
https://polypad.amplify.com/p/1WoDPrt32RJPqg

Explore! 👉 https://t.co/JrRC8GOLvE @Amplify @MathigonOrg @desmosclassroom #MTBoS #ITeachMath pic.twitter.com/11EgcTLbg8

— Tim Brzezinski (@TimBrzezinski) February 28, 2024

Images Links

I'm always up for a good tessellation. 
Curriculum Tags: All
https://twitter.com/RobFathauerArt/status/1761090417796223026

Lovely tiling spotted in the bar at the Ritz Atlanta pic.twitter.com/m3LOfnOlm5

— Robert Fathauer (@RobFathauerArt) February 23, 2024

    

Math Links for Week Ending Feb 23, 2024

Featured Links

If you haven't been listening to the @MathTeacherLounge podcast then you've been missing out. The good news is that with podcasts you can always get caught up. The bad news is that they just published their last episode. Sad to see its on the way out but was happy that @DDMeyer and @LockhartEDU were able to give us 3 seasons. They were a great team.
Curriculum Tags: All
https://amplify.com/math-teacher-lounge/






Resource Links

This is a great exercise for you to do with your teacher friends. There are some great ideas in the comments
Curriculum Tags: All
https://twitter.com/ddmeyer/status/1760441537279004679

Okay - this right here is wrong. Teachers, you have one tweet's worth of feedback to write to the student. What are you going to say? #iteachmath pic.twitter.com/GrEwtyMrAI

— Dan Meyer (@ddmeyer) February 21, 2024

Video Links

You have to have a bit of a thick skin but everyone should take part in this #ObserveMe activity. We cannot teach in a bubble and the only way we will ever be able to get better is with feedback. And we don't get feedback if we are the only ones in our classes as we teach
Curriculum Tags: All
https://twitter.com/robertkaplinsky/status/1759625061231743033

Here's my IGNITE! talk on why people should join the #ObserveMe movement. Watch or download the full video here: https://t.co/tRt6aPxQ4Y #MTBoS pic.twitter.com/fCyGtaPGjR

— Robert Kaplinsky (@robertkaplinsky) February 19, 2024

So I knew that Geogebra could be used for 3D graphing but I didn't know that Graspable math was connected to Geogebra so that you could do some on the fly dynamic stuff. Nicely done.
Curriculum Tags: MCV4U
https://activities.graspablemath.com/whiteboards/_76282fd5865cf0dd

Making sense of the equation of a plane https://t.co/aIb8iCfR95 @GraspableMath @geogebra #MTBoS #ITeachMath pic.twitter.com/TQWjm5vBOv

— Tim Brzezinski (@TimBrzezinski) February 22, 2024

Despite the fact that @AnnieK_P doesn't like to be on Twitter, I am glad when she does post these awesome Islamic art pieces
Curriculum Tags: All
https://twitter.com/anniek_p/status/1760876971691479348

I am working hard to carve our time for myself to read, and do geometric art again. This site is a hellscape, and I do not want to give it more of me, but I will keep posting these photos over on the photo app. @/anniekperkins pic.twitter.com/0CLPC5aXks

— Annie Perkins (@anniek_p) February 23, 2024

Who knew that there was an algorithm associated with fonts?

Curriculum Tags: MCR3U, MHF4U
https://twitter.com/davidpetro314/status/1760265003800629698

Where do you see #math here?#MathChat #MTBoS #iTeachMath https://t.co/4cYvtLV6Ka

— David Petro (@davidpetro314) February 21, 2024

I love that this can be made with dynamic geometry
Curriculum Tags: All
https://twitter.com/SumDumThum/status/1759431277013336300

Order-8 triangular kaleidoscope https://t.co/uKpaAZ89s3

based on @Pixelated_Donut's iterated inversion trickhttps://t.co/P1cvgMr6Rt pic.twitter.com/EuneBLO1eA

— Andrew Osborne (@SumDumThum) February 19, 2024

Here is the last of 5 small tweaks you can bring to your classrooms to help students learn
Curriculum Tags: All
https://twitter.com/howie_hua/status/1759237990860333404

Small changes, big impacts in the classroom part 5: This is one of the first things I think about when I create a lesson pic.twitter.com/BCIc9nIMIQ

— Howie Hua (@howie_hua) February 18, 2024

I think we could run real versions of this in our math classrooms as starters and maybe extend to other fractions.
Curriculum Tags:All
https://twitter.com/bobloch/status/1759205341890261381

Hey math folks, what can we do with this? https://t.co/rVnKfzxuCl

— Bob Lochel (@bobloch) February 18, 2024

Image Links

This might be a good system of equations question
Curriculum Tags: MPM2D, MFM2P
https://twitter.com/Rainmaker1973/status/1760316972330299429

How tall is the table? pic.twitter.com/9A2wVF2Dv6

— Massimo (@Rainmaker1973) February 21, 2024

I think this puzzle could be done by just about any grade level, however, why it works might be a bit trickier
Curriculum Tags: All
https://twitter.com/EarlyFamilyMath/status/1759729582104776806

This is a great puzzle to get your students thinking and talking math!
In collab with Math for Love#earlymath #tmwyk #mtbos #mathschat #iteachmath #mathgames #mathstrategy #mathematics #homeschooling #momlife #parenting #playathome pic.twitter.com/oo26FAvXkd

— EarlyFamilyMath (@EarlyFamilyMath) February 20, 2024

    

Math Links for Week Ending Feb 16th, 2024

Featured Links

@Howie_Hua manages to put out a lot of content (on top of his actual job of teaching preservice teachers) but I really like the recent few that he's put out about small changes you can make that can affect big changes. Here's the 4th one (you can search his feed for the others).
Curriculum Tags: All
https://twitter.com/howie_hua/status/1751318526252704027

Small changes, big impacts in the classroom part 4: I try to avoid using this one word when providing feedback pic.twitter.com/IglWxdpyd5

— Howie Hua (@howie_hua) January 27, 2024

Resource Links

Valentines is over but you might want to put this in your back pocket for next year. You could use it for any grade that requires plugging values into formulas but you can also use it in data mangement when talking about normal distributions. 
Curriculum Tags: All
https://tomrocksmaths.com/2024/02/13/formula-for-the-perfect-proposal/

Ahead of Valentine's Day, here's a little piece of maths I've put together to help you plan the perfect romantic evening. It's framed as the perfect proposal formula, but there's a lot that can be applied when planning a home-cooked meal with your S.O. ...https://t.co/DFLd0FTGHz

— Dr Tom Crawford (@tomrocksmaths) February 13, 2024

Video Links

A few videos conceptualizing dividing fractions
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/howie_hua/status/1756327269709365254

When would you ever divide by a fraction?? pic.twitter.com/C4D83mpXr1

— Howie Hua (@howie_hua) February 10, 2024

https://twitter.com/howie_hua/status/1757560909244097021

If we write fraction division like this, people may see why "keep change flip" works pic.twitter.com/MHX3tuMrkj

— Howie Hua (@howie_hua) February 14, 2024

https://twitter.com/howie_hua/status/1757560909244097021

If we write fraction division like this, people may see why "keep change flip" works pic.twitter.com/MHX3tuMrkj

— Howie Hua (@howie_hua) February 14, 2024

Some more fun with Equilateral Triangles
Curriculum Tags: MTH1W
https://twitter.com/TimBrzezinski/status/1757018814271615442 

Equilateral triangles wonder. Source: @davidpetro314 https://t.co/HCMgecPs2N @geogebra #MTBoS #ITeachMath pic.twitter.com/ZwA0OQ6WIu

— Tim Brzezinski (@TimBrzezinski) February 12, 2024

Well, it's the last episode of the season for us and we asked each of our guests "How do you define mathematical fluency?" and this is what they said:
Curriculum Tags: All
https://twitter.com/OAMEtalks/status/1757926285068709975

Image Links

How would you have your students prove this is true?
Curriculum Tags: MTH1W
https://twitter.com/pickover/status/1758492262088974491

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/78OS8aixNW

— Cliff Pickover (@pickover) February 16, 2024

    

Math Links for Week Ending Feb 9, 2024

Featured Links

It's not often I see some property I haven't seen before but given the amount of stuff that @TimBrzezinski puts out, it's not suprising that he shows me something new. 
Curriculum Tags: MTH1W
https://twitter.com/TimBrzezinski/status/1755201259408118041

⭕️ & equilateral triangle phenomenon https://t.co/Dj6ANYbo7M @geogebra @gogeometry #MTBoS #ITeachMath pic.twitter.com/I3ph3aiKwo

— Tim Brzezinski (@TimBrzezinski) February 7, 2024

Resource Links

Who doesn't need to learn about transcendental numbers
Curriculum Tags: MHF4U
https://karendcampe.wordpress.com/2024/02/07/exploring-e/

Happy e day! (2.7)

New blog post: "Exploring e" with some ideas for learning about the Euler number in math class. #MTBoS #iTeachMath #T3Learns #calculushttps://t.co/FGjtGezqrd

— Karen Campe (@KarenCampe) February 7, 2024

Where do you need math in everyday life?
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1754520352208679407

Mathematics has applications across so many parts of everyday life - from weather prediction to bridge design, crowd control to music shuffling, and fraud detection, to name a few. Explore many more interesting examples at https://t.co/R1xGBJ8WPN pic.twitter.com/Mjc7hiyfuB

— Mathigon (@MathigonOrg) February 5, 2024

Do you need to find a prime number? How about this method?
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1754882734411948267

The Sieve of Eratosthenes is a simple method for finding prime numbers: you highlight the next available number and then cross out all of its multiples. How many primes are there less than 100? Try for yourself at https://t.co/Mr65qdpphj pic.twitter.com/qi4UDzE5zq

— Mathigon (@MathigonOrg) February 6, 2024

Video Links

Have you ever thought of what you could do if you could break an algebra tile?
Curriculum Tags: MPM2D, MFM2P
https://twitter.com/TimBrzezinski/status/1754120652020212228

Completing the square in Polypad : Even when the B coefficient is ODD @MathigonOrg @desmosclassroom @Amplify #MTBoS #ITeachMath pic.twitter.com/q48uAooh0H

— Tim Brzezinski (@TimBrzezinski) February 4, 2024

You might have seen the rectangle version of this but how about the triangle version?
Curriculum Tags: Gr8

https://twitter.com/TimBrzezinski/status/1754258083369341387

Pushing the boundaries with circles in @MathigonOrg #Polypad: https://t.co/TCowI1LLz7 @desmosclassroom @Amplify #MTBoS #ITeachMath pic.twitter.com/XVaw0yFY0Y

— Tim Brzezinski (@TimBrzezinski) February 4, 2024

Students often struggle with combinatorics, so it is always good when something can be explained clearly
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1755744864757862570

Have you ever wondered what's happening in the permutation and combination formulas? Here's how we can think about them: pic.twitter.com/LzQklkmSle

— Howie Hua (@howie_hua) February 9, 2024

This is the third #OAME2024 preview episode
Curriculum Tags: All
https://twitter.com/OAMEtalks/status/1754636573402947603

Image Links

I am always looking at what parts of docudramas are true.  This is a neat data visualization to represent that
Curriculum Tags: MDM4U
https://twitter.com/infobeautiful/status/1753462035491274798

Great films fact-checked and visualised scene by scene. Is there really such a thing as a "true" true story in Hollywood?

Explore: https://t.co/pBn4cnSGWG pic.twitter.com/ME10rkZ4h8

— Information is Beautiful (@infobeautiful) February 2, 2024

What a great data visualization

Curriculum Tags: All
https://twitter.com/jennalaib/status/1754561880985686066

Love this, from @ferdiocom https://t.co/9VR6DmgiGd pic.twitter.com/0aj2JqoLKQ

— Jenna Laib (@jennalaib) February 5, 2024