Math Links for Week Ending Dec 30th, 2022

Featured Links 

When someone you respect has a page of resources, then you can guarantee you will find some good stuff there

Curriculum Tags: All
https://www.fawnnguyen.com/resources

An older puzzle that I love and have shared at workshops: Removing Counters https://t.co/uX27ddICDa

(I also added a bunch more to the page https://t.co/oQ3upA2TKM)#MTBoS #iteachmath

— Fawn Nguyen (@fawnpnguyen) December 28, 2022

Resource Links 

I always appreciate all of the little geometry tidbits that @TimBrzezinski highlights with his dynamic geometry posts. In this case, you could definitely have some fun with Pythagorean triples, specifically the first one 3-4-5. 
Curriculum Tags: Gr7, Gr8, MTH1W, MFM2P
https://twitter.com/TimBrzezinski/status/1608523947007696897

Hidden inside every square is a 3-4-5 right triangle. All you need are 2 midpoints of 2 sides! 👀 https://t.co/77ExcEAdo5 & https://t.co/p2gfUvdvO7 @gogeometry @geogebra #MTBoS #ITeachMath #geometry pic.twitter.com/aiB7S1n7Yd

— Tim Brzezinski (@TimBrzezinski) December 29, 2022

When ever you introduce properties of circles, then I would suggest this as a fun way to get started.
Curriculum Tags: Gr7, Gr8
https://twitter.com/bobloch/status/1608581549842403330

This is a fun waste of time.
⭕️ My best circle is 95.1% perfect, can you beat that? https://t.co/UUiTHnV5uO

— Bob Lochel (@bobloch) December 29, 2022

Video Links 

I love that he uses e to prove his point
Curriculum Tags: MHF4U
https://twitter.com/howie_hua/status/1608524980647788546

New TikTok video: Which is greater, 2022^2023 or 2023^2022? pic.twitter.com/Lq3YkFUrID

— Howie Hua (@howie_hua) December 29, 2022

A dynamic visual proof of Pythagorean Theorem
Curriculum Tags: Gr7, Gr8, MTH1W, MFM2P
https://twitter.com/MagicPi2/status/1608477876403290114

Pythagorean theorem#MTBoS #iteachmath #math #Maths #geometry pic.twitter.com/T60vniOeQI

— Idan Tal (@MagicPi2) December 29, 2022

A nice animation with regular polygons
Curriculum Tags: All

https://twitter.com/MagicPi2/status/1607016188886020097

pic.twitter.com/sEhMi6nQZ1

— Idan Tal (@MagicPi2) December 25, 2022

I love how he wrote out all the permutations. 

Curriculum Tags: MDM4U

https://twitter.com/howie_hua/status/1607106145696763904

New TikTok video: What's the probability someone spells Santa? pic.twitter.com/8ytvRrubFj

— Howie Hua (@howie_hua) December 25, 2022

Image Links 

Who doesn't like a good (if not obscure) Pi fact
Curriculum Tags: All
https://twitter.com/mathladyhazel/status/1607932174983905287

656430109694 occurs in 𝜋 at position 656430109694! This cannot be a coincidence! 😲 pic.twitter.com/YPP3Adt7zo

— Math Lady Hazel 🇦🇷 (@mathladyhazel) December 28, 2022

This relates to @Howie_Hua's post from above

Curriculum Tags: MHF4U
https://twitter.com/pickover/status/1607582406219005953

Mathematics.

(1001/1000)^1000 pic.twitter.com/zxY0eBz8lk

— Cliff Pickover (@pickover) December 27, 2022

Math Links for Week Ending Dec 23rd, 2022

Featured Links

It's Christmas time and that means it's time for my favourite homemade ornament. Made by my son following @JamesGrime instructions (see video below).
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1604139663828172801

Decorating the tree now. My favourite ornament is the #dodecahedron made by my son out of @CocaCola cans (based on @jamesgrime’s instructions)https://t.co/Ps0cZcINQ3#MathChat #MTBoS #iTeachMath pic.twitter.com/M1tvYuhqy4

— David Petro (@davidpetro314) December 17, 2022

Resource Links

Using Parking garage levels to model adding and subtracting integers in his lesson from @MathisVisual. Start with the video and then read on for more prompts in the post
Curriculum Tags: Gr7
https://mathisvisual.com/adding-integers-adding-a-negative/

Video Links

Here is James Grime with instructions on how to make a Post-it Note Dodecahedron. 
Curriculum Tags: All
https://www.youtube.com/watch?v=vjOOhemquss

Image Links

Pick a topic and use an @OpenMiddle structure to pull out thinking. Here's an example
Curriculum Tags: All
https://twitter.com/JRappaport27/status/1605587130041831425

Playing around with something for elementary school and kind of landed on this. I've got a hint in mind, but curious about what others think. @robertkaplinsky @openmiddle @Mathgarden @KirstDy @DanShuster @DrKarnadJani @pgliljedahl @davidpetro314 @HKhodai @shskaercher @pamseda1 pic.twitter.com/G1VnCx2V2C

— Jordan Rappaport (@JRappaport27) December 21, 2022

  

Math Links for Week Ending Dec 16th, 2022

Featured Links

How do you feel about artificial intelligence (AI)? Or at the very least, how do you feel about a computer doing your job or your student's homework? Photomath has been around for a while and now we have ChatGPT. They are not quite the same but either way, my question is "how have you changed what you do in class now that these technologies exist?"
Curriculum Tags: All
https://openai.com/blog/chatgpt/

Asked ChatGPT to creat a lesson plan on factoring quadratics. FWIW: pic.twitter.com/pMfhyOC0Qt

— Justin Brennan (@Math_Grinder) December 16, 2022

Resource Links

In this post @JRappaport27 give us an example of a sequence of questions to "thin slice" a topic. Take the topic of your choice and this example to build your own ( and then share it out).
Curriculum Tags: All
https://twitter.com/JRappaport27/status/1603425723791859712

Building out a sequence. To provide greater access, we're being intentional with the use of language and not jumping too quickly to the symbolic. The idea is for this to cross several grade bands and for the questions to be thin sliced. Feedback on the language will be helpful. pic.twitter.com/fkVDEYQrTu

— Jordan Rappaport (@JRappaport27) December 15, 2022

And here he continues to flesh out his beginning algebra task with pattern blocks
Curriculum Tags: Gr7, Gr8
https://twitter.com/JRappaport27/status/1602757490009165825

I’ve added the learning journal to guide students as they capture their learning.@pgliljedahl @MathforLove @MrValencia24 @KirstDy @davidporas @davidpetro314 @pamseda1 @FractionTalks @BurdessAlicia @mic_epstein @shskaercher @d_martin05 @Trianglemancsdhttps://t.co/28vLVtjj4S https://t.co/RSiBTVeW2L pic.twitter.com/xyOCR32dWh

— Jordan Rappaport (@JRappaport27) December 13, 2022

Here's a way to mix up how students do problems in your class
Curriculum Tags: All
https://twitter.com/TheErickLee/status/1602393237225865254

Brainstormed this idea with a teacher to turn surface area and volume math stations into a "Math Passport" activity. Students get a stamp (a bingo dauber or a sticker) for each station they complete. Suggestions? #ITeachMath https://t.co/K6yLV5Q7wg pic.twitter.com/E2c0DLOhiJ

— Erick Lee HRCE Math (@TheErickLee) December 12, 2022

I was lucky enough to become a @Desmos fellow for cohort 3 and because of the pandemic the cohorts stopped at 4. But now they have re upped and are accepting applications for Cohort 5. I highly recommend at least trying
Curriculum Tags: All
https://twitter.com/desmosclassroom/status/1601288630806671361

📣 We’re now accepting applications for the next Desmos Classroom Fellows cohort!

If you’re a Desmos Classroom super fan or an educator wanting to learn how to tap into the power of Desmos Classroom technology in your classroom, apply now: https://t.co/oaxy9BvYd6 #MTBoS pic.twitter.com/d1Y6nKykBR

— Desmos Classroom (@desmosclassroom) December 9, 2022

Video/Audio Links

Check out @Nomad_Penguin talking about stories in math but using help from so many other fellow Twitter folks in this short 10 min episode.
Curriculum Tags: All
https://amiealbrecht.com/2022/12/03/abc-ockhams-razor-endnotes/

NEW Blog Post: ‘ABC Ockham’s Razor: Endnotes’

I was on the radio this morning, talking about the magic of storytelling in mathematics.

The blog post contains links to the audio, the transcript, and to all the sources of inspiration for the talk.https://t.co/XEh1cp5upq

— Amie Albrecht (@nomad_penguin) December 3, 2022

It is funny how people will dive into those "Only geniuses" problems but as soon as you put traditional variables in they act like a deer in headlights
Curriculum Tags: All
https://twitter.com/howie_hua/status/1603897629707972608

In video form: pic.twitter.com/70fQqS8jP1

— Howie Hua (@howie_hua) December 16, 2022

Image Links

I think there may actually be more information given here than needed. 
Curriculum Tags: MTH1W
https://twitter.com/KH2020H0/status/1603827818483286040

Solve for the length of the segment denoted as x

Geometry Challenge pic.twitter.com/7rEJquvPwL

— KHALID (@KH2020H0) December 16, 2022

@Howie_Hua continues is "on the shelf" series
Curriculum Tags: All

https://twitter.com/howie_hua/status/1603918347254370304

You've heard of elf on the shelf but have you heard of pic.twitter.com/tegS6l5PIK

— Howie Hua (@howie_hua) December 17, 2022

I love when teachers show how simple things can be
Curriculum Tags: Gr8, MTH1W
https://twitter.com/DavidKButlerUoA/status/1602586808722034688

You don’t need anything too fancy to show students how scatterplots work. Here are some ideas. pic.twitter.com/ne9VoAPGPf

— David Butler (@DavidKButlerUoA) December 13, 2022

Math Links for Week Ending Dec 9th, 2022

Featured Links

In this little demonstration, @Howie_Hua give's one reason why you shouldn't think of your percentage grades as the be all end all. But I think the bigger issue is that there is a perception that because we can grade things to the precision of 10ths of a percent (or smaller) that somehow the grading is also that accurate. But also the reverse is true. Using his example, if you mark something 3/4 or 3.5/4 that's a swing of 75% to 87.5 %. That is not very precise when giving the grade but by reporting via a percent it seems like it is. And then when you start to average all those grades the precision seems to get better. But even more so, I always ask teachers at the end of the year, if you have two grades, one of 72% and one of 74%, can you articulate why one is better than the other? I would argue no. And go as far as saying that if you have a student who's grade is 75% that it may be precise to the nearest percent but it's probably only accurate to +/- 5%. So if you are pining about giving a student 79% or 80%. Understand that it could just as easily be 75% or 85% with the same student ability. 
Curriculum Tags: All
https://twitter.com/howie_hua/status/1600647978699542530

New TikTok video: Why I will always round an 89.9% to an A pic.twitter.com/2SVPpdjHq2

— Howie Hua (@howie_hua) December 8, 2022

Resource Links

The NCTM calendar problems have already been a great resource and I have been reminded of them by @KarenCampe who's giving us a nostalgic look at the December set from 1992
Curriculum Tags: All
https://karendcampe.wordpress.com/2022/12/03/december-calendar-problems/

Video Links

I've been a fan of Cliff Stoll for years and especially of his Klein bottles. Now you can see how they are made:
Curriculum Tags: All
https://www.youtube.com/watch?v=cdLXvJ8wFY4

Image Links

It seem's @Howie_Hua has been making Elf on the Shelf memes.
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C
https://twitter.com/howie_hua/status/1600610913307926528
https://twitter.com/howie_hua/status/1600315280156024832

You heard of elf on the shelf but have you heard of pic.twitter.com/e1Yhb4ngo4

— Howie Hua (@howie_hua) December 7, 2022

You've heard of elf on the shelf but have you heard of pic.twitter.com/rmOKuOCRIX

— Howie Hua (@howie_hua) December 7, 2022

I like this one because you can do it via many calculations or you can actually see some nice symmetries to show you have four squares.
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/KH2020H0/status/1599840454920413184

What is the area shaded in blue? pic.twitter.com/1AMC1VQzsB

— KHALID (@KH2020H0) December 5, 2022

        

Math Links for Week Ending Dec 2nd, 2022

Featured Links

I think it's important to show students real connections for the math they are learning. In this video, even though what is being produced is a Christmas ornament, you can see how much math a machinist needs to have in order to do their job well. Specifically, in this case, properties of geometry and some simple trig relationships.
Curriculum Tags: MPM2D, MDM2P
https://www.youtube.com/watch?v=Xno_jxnVeQk

Resource Links

Last week, @JRappaport27 posted a resource for patterning and beginning algebra. This week he added Ontario Curriculum Expectation connections. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/JRappaport27/status/1598068776041598976

Hey #onted friends, I've added Ontario curriculum expectations across grades 1-3, 4-6 and 7-8. Please share with anyone who might find this useful :) https://t.co/bZ1krAsz6zhttps://t.co/QMzymZ7Fiphttps://t.co/KJdIXEZDmZ https://t.co/3aRW8WLhns pic.twitter.com/Cr4TSbld92

— Jordan Rappaport (@JRappaport27) November 30, 2022

I am continually impressed with how @MaryBourassa does simple things that can bring so much thinking out from students. I love the idea of mini presentations. 
https://twitter.com/MaryBourassa/status/1598668069446029318

My #MTH1W students are presenting about numeral systems this morning. They only have to present to 2 people as they are in random groups of 3 (this was intentional to help reduce anxiety). It fills my heart with joy to hear them all teaching each other. pic.twitter.com/APEWuHHCpL

— Mary Bourassa (@MaryBourassa) December 2, 2022

Video/Audio Links

So much cool symmetry
Curriculum Tags: All
https://twitter.com/Rainmaker1973/status/1596819301398622209

This collection of slow motion videos of objects falling in water and cornflour result in spectacular fluid motion effects, with highly unexpected but extremely satisfying geometries and shapes

[📹: https://t.co/Dx9rv9pC0K]pic.twitter.com/A20uDiyLP5

— Massimo (@Rainmaker1973) November 27, 2022

With "free", sometimes you get what you pay for. However, you can always be sure that the stuff that @RobertKaplinsky is gonna be good. In this case, he's release a free webinar about "How To Help Students Become Problem Solvers, Not Math Robots" Check it out:

Curriculum Tags: All
https://robertkaplinsky.com/norobots_webinar

I wish I realized early in my career that I was creating students who could get correct answers, yet not understand what they were doing. I shared what I've learned since then in this recording of my webinar with K-5 & 6-12 versions.https://t.co/S8d6HrcUyz #pd #MTBoS pic.twitter.com/Lt7X0uZQAu

— Robert Kaplinsky (@robertkaplinsky) November 26, 2022

Connecting area of a circle to art

Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/Ayliean/status/1593276676263256068

Dividing a circle into 7 equal area slices 🍕

Equality in Maths is just beauuutiful 💗 pic.twitter.com/WWTPYgwFq3

— Ayliean (@Ayliean) November 17, 2022

That's one way to practice Pythagorean Theorem

Curriculum Tags: All
https://twitter.com/MrOrr_geek/status/1595744862724308997

Oops, I forgot ...It was this length.

A new take on a Pile Up Problem.

Cc @natbanting pic.twitter.com/rrGf7BZcO1

— Jon Orr (@MrOrr_geek) November 24, 2022

This month we are hearing from @KirstDy about Nurturing Joy in Mathematics
Curriculum Tags: All
https://talks.oame.on.ca/season-5

Do you like data and F1? Then here you go. Thanks to @KMarkPet for pointing this one out.
Curriculum Tags: Gr7, Gr8
https://twitter.com/fastpitstop/status/1597121298416939008

Most googled Formula 1 drivers in 2022 in every countrypic.twitter.com/LTAWbfhW3l

— Stefanie (@fastpitstop) November 28, 2022

Image Links

So nice

Curriculum Tags: All
https://twitter.com/mathladyhazel/status/1598709121225736192

Only straight lines. The pure beauty of mathematics. 😲 pic.twitter.com/xQNZdkoORb

— Math Lady Hazel 🇦🇷 (@mathladyhazel) December 2, 2022