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

Math Links for Week Ending Nov 25th, 2022

Featured Links 

I'm not sure what @JRappaport27 is drinking but he's been steadily putting out quality stuff. Check out this sequence of tasks leading up to adding fractions. You can download all 78 slides at the link below:
Curriculum Tags: Gr7, Gr8
https://twitter.com/JRappaport27/status/1595145551401869313

Here's a draft of a sequence of 6 tasks. Included in the speaker notes are sample hints/prompts to support/challenge/extend thinking, sample teacher moves and assessment considerations. Feedback always appreciated :) @pgliljedahl @MrValencia24 @KirstDy https://t.co/bZ1krAsz6z pic.twitter.com/B66qn3DivI

— Jordan Rappaport (@JRappaport27) November 22, 2022

Resource Links 

In this sequence @MSBJacobs shows that you don't have to create lessons with a lot of moving parts to have students develop understanding. In this case, we are looking at algebraic expressions with a combination of virtual tiles and vertical surfaces. Check out the entire thread here:
Gr7, Gr8, MTH1W
https://twitter.com/msbjacobs/status/1595164255070085120

I tried this activity in @MsLyon16 's MTH1W class using Polypad on @MathigonOrg to help illustrate algebraic expressions. First Q: if this is x + 2 what would 3(x+2) look like? Students go to the VNPS to work in small groups: pic.twitter.com/H4EOyLnLvF

— Michael Jacobs (@msbjacobs) November 22, 2022

Video Links 

Having just done a workshop at NCTM about visualizing multiplying and dividing fractions (https://bit.ly/nctm2022petro), I totally resonate with this post.
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1594017134278893568

New TikTok video: How do we VISUALLY show why we flip the second and multiply when dividing fractions? pic.twitter.com/HEAVjFk0pf

— Howie Hua (@howie_hua) November 19, 2022

Nice visualization of half life
Curriculum Tags: MCR3U, MHF4U
https://twitter.com/TimBrzezinski/status/1593976532023877632

Half-life function illustrated. Notice the half-life of substance does not depend on the initial amount! https://t.co/S3qyxae5sJ & https://t.co/l9VfJbcTjd @geogebra #MTBoS #ITeachMath #math #mathchat pic.twitter.com/fmoFQwDsVx

— Tim Brzezinski (@TimBrzezinski) November 19, 2022

Image Links 

Even if you are not a fan of Pokemon, you may like this quick reminder of 8 practices all math students should engage in
Curriculum Tags: All
https://twitter.com/howie_hua/status/1594813942748311553

8 Mathematical Practices meme pic.twitter.com/bIYmq75dZY

— Howie Hua (@howie_hua) November 21, 2022

What's the minimum/maximum number of calculations needed to find the blue area?
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/KH2020H0/status/1593740152798576640

What is the area of the region shaded in blue?
The below figure is a square of perimeter 24 cm. pic.twitter.com/psv7l1oVwY

— KHALID (@KH2020H0) November 18, 2022

Thank you IKEA
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/mathillustrated/status/1593074964155858944

Still one of my favorite #geometry pictures from @IKEAUSA #ITeachMath #ouch pic.twitter.com/BD5PpMTm1R

— Ralph Pantozzi (@mathillustrated) November 17, 2022

Math Links for Week Ending Nov 18th, 2022

Featured Links

As a former physics teacher, I totally love the mix of @Desmos and other interactives on this sight. Check them all out. Even if you don't teach physics directly, you may find some that are perfect for your math class. 
Curriculum Tags: MPM2D, MCR3U, MCV4U
https://sites.google.com/view/afreeparticle/interactives?pli=1

If you aren't following Michael yet, you really need to be. Awesome math applications into Physics using @Desmos ! #iteachmath #iteachphysics https://t.co/FzFbY3WJNR

— Nick Corley (@MrCorleyMath) November 14, 2022

Resource Links

I continue to appreciate the work that @MaryBrourassa does in sharing what she does in her class. She continues to show that you can do a lot with a little
Curriculum Tags: MTH1W
https://twitter.com/MaryBourassa/status/1592539045175132161

Today in ##MTH1W we talked about number sets and density. We had previously talked about the real number system so this was an interesting application. Here's my #thinkingclassroom sequence (some may be from MathUp). pic.twitter.com/bSjEaniGVU

— Mary Bourassa (@MaryBourassa) November 15, 2022

Video Links

So visually appealing
Curriculum Tags: All
https://twitter.com/GHSMaths/status/1325425102331273217

Exploring patters with the Koch snowflake.

(see earlier posts for Desmos links and smoother animations) pic.twitter.com/XR8w3qI8KO

— Martin Holtham (@GHSMaths) November 8, 2020

Looking for a practical application of large powers of 10? Look no further than this massive gear box created by 3D Printer Academy
Curriculum Tags: Gr7, Gr8, MTH1W
https://www.youtube.com/watch?v=cM2heRrLuBc

Image Links

I think this looks intimidating because of the 7s so you may want to give students something similar with 2s to get them in the mood
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/KH2020H0/status/1592196988254441473

Can You Simplify this Challenging Complex Fraction?😁 pic.twitter.com/Nsby9DBIhf

— KHALID (@KH2020H0) November 14, 2022

Or maybe try this one.
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/sonukg4india/status/1591969550693990400

#morning with #math#quote of the day
"When you shoot an arrow of Truth, Dip its point in Honey" pic.twitter.com/bqD6T0DfTN

— SKG (@sonukg4india) November 14, 2022

Math Links for Week Ending Nov 11th, 2022

Featured Links 

The first time I was introduced to the #DebateMath idea was at Twitter Math Camp in 2017 in Atlanta and it was a pretty cool idea. I think that having some of these debate cards makes doing this in your class that much easier. 
Curriculum Tags: All
https://twitter.com/robertkaplinsky/status/1588971164499591176

Want students to have powerful debates about secondary mathematics? Check out Chris Luzniak's (@cluzniak) free debate cards (https://t.co/hOpRWpe98s) including this one for dividing fractions.

Here's his online workshop on debate in math class: https://t.co/xXJtAQg8Ts pic.twitter.com/6myHagbHgd

— Robert Kaplinsky (@robertkaplinsky) November 5, 2022

Resource Links 

It looks like @JRappaport27 has really been doing a good job of taking resources from all over the Twitterverse and consolidating them into solid lessons. Here's one set dealing with fractions:
Curriculum Tags: Gr7, Gr8
https://twitter.com/JRappaport27/status/1590771376079503360

Each task follows this sequence:
1. Which One Doesn't Belong
2. Build fractions using cuisenaire rods, adding constraints along the way.
3. Fraction Talk to consolidate, connect and extend.
4. Individual Reflection@WODBMath #menumath #OIFMath #iteachmathhttps://t.co/a5lH9kUBNo pic.twitter.com/lgR2Gsa0Lp

— Jordan Rappaport (@JRappaport27) November 10, 2022

Video Links 

It's always good to know a little math
Curriculum Tags: All
https://twitter.com/nathanday314/status/1588906885897285632

Yesterday, my Year 10s were treated to my favourite University Challenge clip... pic.twitter.com/JJ1EdLYxRN

— Nathan Day (@nathanday314) November 5, 2022

Image Links 

Twitter has really gone down hill lately :-)
Curriculum Tags: MPM2D
https://twitter.com/howie_hua/status/1590402846834708480

I can't believe it. Twitter suspended the Distance Formula for impersonating the Pythagorean Theorem. pic.twitter.com/bATzpgG180

— Howie Hua (@howie_hua) November 9, 2022

Math Links for Week Ending Nov. 4th, 2022

Featured Links

Are you looking for more reasons to try the #ThinkingClassroom then how about the sentiment of students who are experiencing it. 
Curriculum Tags: All
https://twitter.com/MaryBourassa/status/1587133458513551363

Why #ThinkingClassroom. A few responses when asked "What are your thoughts on this class?". Thank you @pgliljedahl for sharing your research with teachers and making it accessible. pic.twitter.com/8sn8vANvUQ

— Mary Bourassa (@MaryBourassa) October 31, 2022

Resource Links

If you follow @TimBrzezinski then you know that he is a master at making math based animations. And everyone has to start somewhere. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/TimBrzezinski/status/1586521704096223232

Here’s the very first complex @geogebra animation I ever made. It was about 6 years ago. Took forever. Looking back, it’s still one of my favorites. https://t.co/mFsRWnEK5z & https://t.co/1qXNSPgnYq #MTBoS #ITeachMath #geometry pic.twitter.com/ctGVytoQLX

— Tim Brzezinski (@TimBrzezinski) October 30, 2022

Who doesn't like playing with Fractals?
Curriculum Tags: All
https://twitter.com/MathTechCoach/status/1586747251711410176

Enjoy this Fractal Dragon in @GeoGEbra. Make something you like, take a screenshot, and post a pic!https://t.co/5rAexY5jbt pic.twitter.com/HlO5I5KZoI

— Steve Phelps (@MathTechCoach) October 30, 2022

Video Links

I may be biased but I thought fellow Canadian @NatBanting's Ignite session was the best of the lot this year at #NCTMLA22. Now Thanks to @KirstDy's bootleg copy, you can see why
Curriculum Tags: All
http://natbanting.com/nctm-la-ignite/

Image Links

I've never heard of "adding one" as the camel principal. But there is a nice story in the thread for this important math tool. 
Curriculum Tags: All
https://twitter.com/TivadarDanka/status/1588131890040434688

Behold one of the mightiest tools in mathematics: the camel principle.

I am dead serious. Deep down, this tiny rule is the cog in many methods. Ones that you use every day.

Here is what it is, how it works, and why it is essential. pic.twitter.com/cevNDm2ASe

— Tivadar Danka (@TivadarDanka) November 3, 2022

This is like a "lite" version of @NatBanting's #MenuMath. Either way you should be able to get responses from students of all abilities. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/JRappaport27/status/1588173149484781568

The idea is students create their own, build it, then have others solve. Interested to see what folks can come up with. Would love to see some pictures with cuisenaire rods. @KirstDy @NatBanting @pgliljedahl @BurdessAlicia @Mathgarden @DanShuster @shskaercher @davidpetro314 pic.twitter.com/qu8rfItCrH

— Jordan Rappaport (@JRappaport27) November 3, 2022

Here's a good starter for kids who have been doing area for a while or a challenge to those who are new at it. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/dment37/status/1586632995892613121

Blue area? @geogebra #geogebra pic.twitter.com/3w9Z3GHgER

— Daniel Mentrard (@dment37) October 30, 2022

    

Math Links for Week Ending Oct 28th, 2022

Featured Links 

I have been an advocate of Tarsia puzzles for years. They are an awesome self checking activity that incorporates a fun way to do practice. My biggest complaint was that the software to create them was Windows based only. But thanks to @JustinAion I see that there is an online version that you can use to create your own. That being said, you can get the more powerful version of the software here and then go to @MrBartonMaths page here to get literal tonnes of premade ones. And the few that I have made are here. 
Curriculum Tags: All
https://www.tarsiamaker.co.uk/

Day #17: Inequalities Card Sort (Day 2) & Inequalities Puzzle (algebra) #teach180 #msmathchat pic.twitter.com/oHQB2heiu4

— Ron King (@mthman) September 28, 2017

Resource Links 

What a fun little two person puzzle your students can play. Can they determine an optimal strategy
Curriculum Tags: All
https://twitter.com/sergeballif/status/1583835999918260224

I made a @Desmos activity that we'll be using in our Pi-rate Math Club for Science Mom patrons. I called the game Side-to-Side, but I'd love to know if it has another name. I don't remember when I first saw it. https://t.co/opqNWpeItS pic.twitter.com/fDlG73vSWW

— Serge Ballif (@sergeballif) October 22, 2022

Video Links 

This method may be algorithmic but I have always loved it. And way back when I started teaching, it really introduced me to the weirdness of the fact that 0.9999.... is equal to 1. 
Curriculum Tags: MTH1W
https://twitter.com/howie_hua/status/1586158925782867968

New TikTok video: How do we convert a repeating decimal into a fraction? pic.twitter.com/ng5VRa6MHI

— Howie Hua (@howie_hua) October 29, 2022

Image Links 

Some circle theorem problems for you 
Curriculum Tags: MTH1W
https://twitter.com/draustinmaths/status/1585217325317644289

Final batch of circle theorems resources. Hopefully something for everyone, including two activities to introduce some of the circle theorems through isosceles triangles, another mixed practice grid and, for the IGCSE folk, intersecting chord and secant theorems practice. Enjoy! pic.twitter.com/w6TmpK4zQY

— Amanda Austin (@draustinmaths) October 26, 2022

It really is cool that this is true. Good old 52!
Curriculum Tags: MDM4U
https://twitter.com/MathsEdIdeas/status/1585046833381793792

More than

99.99999999999999999999999999999999999999999999999022%

of the possible arrangements of a shuffled deck of playing cards have yet to be seen. pic.twitter.com/kSgzts5VFk

— Maths Ed (@MathsEdIdeas) October 25, 2022

Math Links for Week Ending Oct 21st, 2022

Featured Links 

I keep forgetting that there is more to @MathigonOrg than just Polypad. Here are two examples of other things that students can benefit from. 
Curriculum Tags: All
https://mathigon.org/factris
https://mathigon.org/multiply

Factris is a game that teaches about simple arithmetic, divisibility, factors and prime numbers – and it is incredibly fun. For maximum points, try to clear as many rows as possible at once. What is your high score?

Play at https://t.co/Cxux1vDo0f pic.twitter.com/UjVabkdN16

— Mathigon (@MathigonOrg) October 20, 2022

Multiplication by Heart is a wonderful way for students to learn multiplication facts. Made in partnership with @MathforLove, our program uses spaced repetition, has helpful visuals, and provides detailed teacher analytics. Explore for yourself at https://t.co/YDzrvz5FTc pic.twitter.com/587IXrdWYT

— Mathigon (@MathigonOrg) October 19, 2022

Resource Links 

I always appreciate @MathsJem's resource posts. It's always good to get resources from the other side of the pond. 
Curriculum Tags: All
https://www.resourceaholic.com/2022/10/5-maths-gems-163.html

New! My 163rd gems post. 💎

Ideas, updates and resources for maths teachers.https://t.co/xF0Crufkwa

Includes a link to my #mathsconf30 slides.

Hat tips to follow!#mathsgems #mathschat #teammaths pic.twitter.com/ko1Ynp7ipo

— Jo Morgan (@mathsjem) October 16, 2022

Video Links 

I like to have examples of math used in the real world. In this case, even though this is a longish video, they show some practical uses of percent, ratio, average and even statistics to figure out that they potentially could be losing tonnes of money. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://www.youtube.com/watch?v=V6iTHD_xnoI

It's important not to just give students rules to follow. In these two videos, @Howie_Hua gives us some other strategies when dealing with integer operations. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1573098362471153667
https://twitter.com/howie_hua/status/1583244682246516736

New TikTok video: Why does a negative times a negative equal a positive? pic.twitter.com/tzApWv7G8P

— Howie Hua (@howie_hua) September 22, 2022

New TikTok video: We don't need to rely on "two negatives make a positive" when subtracting pic.twitter.com/G8qfdp9O2p

— Howie Hua (@howie_hua) October 20, 2022

Image Links 

Though not math related, I think that knowing how your students are feeling is super important for making sure they are ready to learn. These prompts would go along well with some of these @Desmos starter screens. 
Curriculum Tags: All
https://twitter.com/Principal_H/status/1583455641053470720

Questions you can ask instead of "how are you?"#teacher #leader #sped #autism #cte #specialeducation #teachertwitter pic.twitter.com/5hl39vNVpc

— 𝐂𝐡𝐫𝐢𝐬𝐭𝐨𝐩𝐡𝐞𝐫 𝐇𝐚𝐫𝐫𝐢𝐬 🎸🏴‍☠️🧩🤖 (@Principal_H) October 21, 2022

Math Links for Week Ending Oct 14th, 2022

Featured Links

Though this isn't necessarily a math link, I think it's important for all teachers and administrators to see. If you've followed this blog then you have probably seen me post links many times from @RobertKaplinski. This time it's a bit different. Follow this link to watch the full video of his #NCTMLA22 talk to get some insights about foster students that you may have in your classes. In fact, you may have them in your classes right now and not even know it. Regardless, understanding some of the struggles they may have is the first step into helping them succeed. Do not miss this.
Curriculum Tags: All
https://robertkaplinsky.com/5-struggles-your-foster-students-wished-you-knew/

Whether you've known or not, you've probably had a foster child in your class. Regardless, watch this recording of a powerful #NCTMLA22 session from @robertkaplinsky & @ZennedMath on 5 struggles those students have:https://t.co/MfuoRYgZBT#MathChat #MTBoS #iTeachMath pic.twitter.com/HpY9dTFyhz

— David Petro (@davidpetro314) October 9, 2022

Resource Links

Even if you are not interested in the grade level he's working on here, the concepts @JRappaport27 is working on to support the thinking classroom should give you all some ideas to expand out to in your own classes. 
Curriculum Tags: All
https://twitter.com/JRappaport27/status/1579897357021642752

Working on a sequence of Check Your Understanding (gr. 4-6) questions by bridging the research of @pgliljedahl, @pamseda1 and @kyndallab. Welcoming feedback. #mtbos @KirstDy @NatBanting @davidpetro314 @BurdessAlicia @DanShuster (who clued me into many of these tasks) pic.twitter.com/idYRjqCdLG

— Jordan Rappaport (@JRappaport27) October 11, 2022

If you've familiar with @PJLiljadah's workshops or book then you are familiar with the Tax Collector problem (especially as one that is good to introduce the logistics of VNPSs). Here is more work that @JRappaport27 has done to tease out the thinking on that problem. 

Curriculum Tags: All
https://twitter.com/JRappaport27/status/1580963198819217420

First in the larger sequence is the Tax Collector. But we might build a Number String first. Our goal for consolidation is a collaborative approach to sense-making. Students then have time for reflection while explaining their understanding of the math. #mtbos @KirstDy https://t.co/fOiuNhl4Us pic.twitter.com/mOO8unGDxI

— Jordan Rappaport (@JRappaport27) October 14, 2022

What a cool use of Microbits. 
Curriculum Tags: MCR3U, MHF4U
https://twitter.com/MrHillEdu/status/1579647813797171201

In maths enrichment we worked with @microbit_edu and @Desmos to graph out how quickly the temp of Pizza drops, then we used Google Maps and scale drawings to map out the distance we could cover to deliver 🍕 without complaints! #mathsbtc pic.twitter.com/lQ8tlm0rLW

— Dominic Hill (@MrHillEdu) October 11, 2022

I love when teachers find websites that could be used to collect data in an interesting way. It would be cool to have students submit images (maybe even of themselves) to discuss the implications of what is considered "beautiful"
Curriculum Tags: MTH1W
https://pinkmirror.com/blog/photo-retouch-face-attractiveness-score/

So I went down the "facial golden ratio" rabbit hole and found a site which will assess your proportional beauty if you upload a photo: https://t.co/CkP0QnwKUu
Feel like there is a data collection activity to be had here. 2/2 pic.twitter.com/T6de6B92Fb

— Bob Lochel (@bobloch) October 11, 2022

Opinion Links

If we can do a better job of connecting play with mathematics, then we could make huge strides in helping show students that they can do math. In this post @a_mcsquared, gives us some reasons to focus on play and some ways to get there. I love @sergeballif's Golf game. 
Curriculum Tags: All
https://blogs.learnquebec.ca/2022/10/playing-in-math-using-desmos/

Video Links

This seems like a fun way to find the GCF
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/howie_hua/status/1578526824866271234

New TikTok video: I wish I was taught this way of finding the GCF when I was in school pic.twitter.com/A5LWvhHCbJ

— Howie Hua (@howie_hua) October 7, 2022

Image Links

Some fun calculations with properties of circles
Curriculum Tags: MTH1W
https://twitter.com/dment37/status/1580094933624836096

Blue area? @geogebra #geogebra pic.twitter.com/rYW4SaCzyU

— Daniel Mentrard (@dment37) October 12, 2022

    

Math Links for Week Ending Oct 7th, 2022

Featured Links

I really love Desmos Challenge Creator. I have ever since they first came out. The ability for students to create their own problems and then have those problems available to the rest of the class to do (like a home grown worksheet but better because your friends made the questions). Up until recently, anyone could run an activity that had a Challenge Creator in it but the average Desmos user couldn't build their own (they couldn't even make a copy of an activity with a Challenge Creator). As a Desmos Fellow, I had the ability to build my own and now everyone does. So if you are the kind of teacher that likes to build their own activities, you can now include Challenge Creators in your portfolio. And if you are interested, here is a collection of mine and others that I have collected to get you started.
Curriculum Tags: All
https://twitter.com/desmosclassroom/status/1576993586574495754

Two words: Challenge accepted 💙
Add a social & creative experience to your lesson with Challenge Creator! You can now design your own challenges for students to create, share, & discuss ideas in activities. Check out our activity or try building your own: https://t.co/x547ESZnUB pic.twitter.com/KhkCXzTuhS

— Desmos Classroom (@desmosclassroom) October 3, 2022

Resource Links

From #NCTMLA22 on Saturday I saw @SaraVDwerf and I love the fact that she always has way more slides than she can get through in an hour. 
Curriculum Tags: All 
https://drive.google.com/drive/folders/1N0RShLYNmpfaKmdlMDXcfBqF6Caqko3u

I'm never be disappointed with all the ideas that @saravdwerf has. Here's one from her #NCTMLA2022 sesh today: "What's the same? What's different?" and as an added bonus we did a "Stand and Talk". Check out all the resources:https://t.co/uOvVZlH8Xm#MathChat #MTBoS #iTeachMath pic.twitter.com/YFqYJPKpjW

— David Petro (@davidpetro314) October 1, 2022

From #NCTMLA22 on Saturday I saw @DavidPoras live in person demonstrating just a fraction of the things you can do with Polypad. Here's a slice
Curriculum Tags: All
https://mathigon.notion.site/NCTM-2022-Los-Angeles-California-8f95cfaac82440778e16413335ef5e35

Even though he shares regularly here on Twitter, it was great to see @davidporas play with #polypad live at #NCTMLA22. Check out some of the resources:https://t.co/vDIZiQtuoi#MathChat #MTBoS #iTeachMath pic.twitter.com/YUzCyT1eXT

— David Petro (@davidpetro314) October 1, 2022

From #NCTMLA22 on Saturday I saw @BobLoch and although I met him at a Desmos Fellows weekend, his talk was all about stories dealing with probability. Great stuff.
Curriculum Tags: MDM4U
https://mathcoachblog.com/

A great session from @bobloch at #NCTMLA22 where he used stories to engage students about probability. I love the strategy of redacting the stories to build interest. His slides will eventually be up on his site https://t.co/VHZYD3WGXC#MathChat #MTBoS #iTeachMath pic.twitter.com/zmGoPCpCUF

— David Petro (@davidpetro314) October 1, 2022

Opinion Links

Are you looking for some tips on general classroom practices then you might like this summary from @KarenCampe on what she has learned from her students
Curriculum Tags: All
https://karendcampe.wordpress.com/2022/09/09/lessons-learned/

Video Links

Apparently Oct 3rd is Mean Girls Day. So do some Calculus. Check the reply for part 2.
Curriculum Tags: MCV4U
https://twitter.com/howie_hua/status/1577037190663544833

New TikTok video: It's October 3rd which is Mean Girls Day. Let's take a look at that problem where Cady Heron famously says "The limit does not exist!" (Part 1) pic.twitter.com/R0ch53k7Y7

— Howie Hua (@howie_hua) October 3, 2022

Image Links

It's time to pull out some properties of chords to get to the root 3
Curriculum Tags: MTH1W
https://twitter.com/MagicPi2/status/1578289048229056512

pic.twitter.com/aSTEZhJ8Z3

— Idan Tal (@MagicPi2) October 7, 2022

Math Links for Week Ending Sept 30th, 2022

Featured Links 

I'm at #NCTMLA22 so this week will have links based on things I saw. But I will start with my session on multiplying and dividing fractions visually with digital tools. This link will get you to the slide deck with all the resource links included
Curriculum Tags: Gr7, Gr8
https://bit.ly/nctm2022petro

Resource Links 

Paul Conley and @WelBlair did a great session on "Supporting Language Learners Using Desmos:Vignettes from the Classroom" focusing on the strategy Stronger and Clearer here at #NCTMLA2022. I like it because it focuses on the idea that students do a draft solution and then revise it with more clear thinking. Check out slides 14 and 15 to see an example
Curriculum Tags: All
https://student.desmos.com/join/mk3gfm

Great session from @welblair and Paul Conley at #NCTMLA2022 on supporting language learners with @desmosclassroom. I really like the Stronger and Clearer strategy. Try it out on slide 14&15https://t.co/eR9boP2l8S#MathChat #MTBoS #iTeachMath pic.twitter.com/aDRgdjSFHa

— David Petro (@davidpetro314) September 29, 2022

Are you looking for what works to help kids who come to your class with learning deficits? @RhondaHewer gave us an exploded view of what they do at her school board to deal with this. 
Curriculum Tags: All
https://tinyurl.com/mjva89a4

We got an exploded view from @rhondahewer at #NCTMLA2022 on how their school board deals with kids who have deficits in their learning. Check out the full slide deck herehttps://t.co/idiUZgPPEY#MathChat #MTBoS #iTeachMath pic.twitter.com/4Zc20oOa0H

— David Petro (@davidpetro314) September 29, 2022

I have been saying this for years and here @AnnieForest did it in a 30 min burst session. Check out her suggested resources:
Curriculum Tags: All
https://bit.ly/NCTM2022Forest

If you're a secondary math teacher then you should have heard @mrsforest's #NCTMLA22 burst session on why you need to pay attention to what goes on in k-5. Some of the resources she shared can be found here:https://t.co/z9NpNsj4WJ#MathChat #MTBoS #iTeachMath pic.twitter.com/j6tfSl3TAi

— David Petro (@davidpetro314) September 29, 2022

Some great examples from @RobertKaplinsky (and friends) on characteristics to make lessons stick
Curriculum Tags: All
https://robertkaplinsky.com/6s 

We heard @robertkaplinsky gave us six things to make our lessons stick at #NCTMLA22 . Get the resources herehttps://t.co/BxIZ4MymZh#MathChat #MTBoS #iTeachMath pic.twitter.com/7QbqQra4sW

— David Petro (@davidpetro314) September 30, 2022

You might think you know what efficiency means but @BerkleyEveret and Jennifer Hagen gave a more detailed view
Curriculum Tags: All
https://bit.ly/nctmslides

We learned about the nuances of efficiency from @BerkeleyEverett and Jennifer Hagman at #NCTMLA22 https://t.co/ALU7UQGgVp#MathChat #MTBoS #iTeachMath pic.twitter.com/KIitVP94lz

— David Petro (@davidpetro314) September 30, 2022

I like that we have people sharing their stories and some of the great resources we have in Ontario. 
Curriculum Tags: All
https://bit.ly/destreamingNCTM

More Canadians at #NCTMLA22. This time it's @JRappaport27 and @ElliWeisdorf showing off some great Ontario resources while talking about what they did to disrupt special education structures.https://t.co/QXXz76cNMq#MathChat #MTBoS #iTeachMath pic.twitter.com/tpsXlcebE3

— David Petro (@davidpetro314) September 30, 2022

This session from KurtSalisbury was a great way to highlight some of the great work happening in @DesmosClassroom. You can try out all the samples with this link. Even if it's just to see some of the examples from the #DesmosArt project, it's worth it. 
Curriculum Tags: All

https://student.desmos.com/join/3by4hp

Great stuff from @kurt_salisbury at #NCTMLA22 using @desmosclassroom to help explain the difference between math and mathematics. Try out some stuff here:https://t.co/HOU6dL8ISH#MathChat #MTBoS #iTeachMath pic.twitter.com/9db5MiksYh

— David Petro (@davidpetro314) September 30, 2022

Video Links 

Did you miss #ShadowCon at #NCTMLA22? What? You don't know what #ShadowCon is? ShadowCon is an educator-led mini conference featuring 4 speakers giving provocative 10-minute talks about mathematics education. You can watch the whole session here:
Curriculum Tags: All
https://www.youtube.com/watch?v=KxTZqy0bQEY

Image Links 

It's great to see so many Ontario teachers here at #NCTMLA2022. In this case,  @Alisongsv and @Jason_To
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1575519310751186947

It was cool to see fellow Ontario teacher @Jason_To here at #NCTMLA22 #MathChat #MTBoS #iTeachMath pic.twitter.com/EH1FJnkIBO

— David Petro (@davidpetro314) September 29, 2022

@NatBanting had a great talk on how constraints can actually make things better in math class at #NCTMLA2022
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1575531897911971843

Here at #NCTMLA22 @NatBanting suggesting that all math classes should be like a bin of Legos ( and that NCTM should be in Sask in 2025 - #NCTMSa2025 who’s in?) and not I do, we do, you do#MathChat #MTBoS #iTeachMath pic.twitter.com/25Y98avmf9

— David Petro (@davidpetro314) September 29, 2022

Nurturing Identity and Agency from the Hawaiian crew @Dewgott, @yannabahweiss & @HanakoBDB
Curriculum Tags: All
https://student.desmos.com/join/kjbgfg

We learned about Nurturing Identity and Agency from @dewgott @yannabahweiss & @HanakoBDB at #NCTMLA22 today https://t.co/AM2VD93t2X#MathChat #iTeachMath #MTBoS pic.twitter.com/ofXlg2Swi4

— David Petro (@davidpetro314) September 29, 2022

What metaphors do you use in class?
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1575614090113822721    

Connecting math and metaphors with @nhoskee at #NCTMLA22 #MathChat #MTBoS #ITeachMath pic.twitter.com/czokh5AZgX

— David Petro (@davidpetro314) September 29, 2022

#MathersGonnaMath from @DebPeart1. Get your shirt here
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1575657381903892481

Good stuff from @Debpeart1 at #ShadowCon at #NCTMLA22 #MathChat #MTBoS #iTeachMath #MathersGonnaMath pic.twitter.com/XWfdaVrGCI

— David Petro (@davidpetro314) September 30, 2022