Math Links for Week Ending Jun. 25th, 2021

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Last week @JRappaport27 was doing some crowdsourcing with assessment: "Going to be supporting a group of educators (elementary and secondary) teaching summer school. Assessment practices will be an area of focus, so I've been playing around with a journal template for Ss use that will document their learning journey." It was interesting to see the iterations that he went through given the feed back he got. Note that in the last two iterations, the link to the Google Docs:
Curriculum Tags: All
https://twitter.com/JRappaport27/status/1405240324163788807
https://twitter.com/JRappaport27/status/1405603277325094920
https://twitter.com/JRappaport27/status/1406249009493250053
https://twitter.com/JRappaport27/status/1407058596374929416

Ver1:

Going to be supporting a group of educators (elementary and secondary) teaching summer school. Assessment practices will be an area of focus, so I've been playing around with a journal template for Ss use that will document their learning journey. Any and all feedback is welcome. pic.twitter.com/TXveTBeMSh

— Jordan Rappaport (@JRappaport27) June 16, 2021

Ver2:

Updated version and I've intentionally italicized specific words, which are the competencies I value. My thoughts would be for Ts and Ss to use this as a choice board throughout and then as an overall reflective piece at the end. Further thoughts and feedback are always welcome. https://t.co/TLhQQxFC1f pic.twitter.com/zPV0HyK1WD

— Jordan Rappaport (@JRappaport27) June 17, 2021

Ver3:

If interested, here's the link to the assessment tool. Please share with anyone who might find it useful. #iteachmath #mtbos @pgliljedahl @MathletePearce @davidpetro314 @Jason_To @MarkChubb3 @MrSoclassroom @AlexOverwijk @TheMentoree @HKhodai @MrOrr_geek https://t.co/Y1AoGk90Ne https://t.co/zyLSoAsgKk

— Jordan Rappaport (@JRappaport27) June 19, 2021

Ver4:

A fourth version reflective of the various stages of their learning journey educators and students are on. #iteachmath #mtbos @pgliljedahl @MathletePearce @davidpetro314 @Jason_To @MarkChubb3 @MrSoclassroom @AlexOverwijk @TheMentoree @HKhodai @MrOrr_geek https://t.co/7kSic1CCkc https://t.co/Xs4QyCxS6T pic.twitter.com/PfIJ6I5xrj

— Jordan Rappaport (@JRappaport27) June 21, 2021

Resource Links

Though this is an older post from @MarkChubb3, I think it a great companion to any class. It came out of the discussion of the assessment work above and you should definitely take a look at it to get a whole pile of questions you can ask after a lesson. 
Curriculum Tags: All
https://twitter.com/MarkChubb3/status/1406257945147547650

These look great Jordan! Thanks for sharing.
If it helps, here are sample starters that might be similar or different:https://t.co/MJo7J6JeQE

— Mark Chubb (@MarkChubb3) June 19, 2021

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I love the way that conic sections are related to each other in odd ways. 
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https://twitter.com/theAlbertChern/status/1407601195468812293

You can draw a circle by sliding a right angle against any conic. pic.twitter.com/aIpEIwgW6o

— Albert Chern (@theAlbertChern) June 23, 2021

Some mathematical art for ya'll
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https://twitter.com/Ayliean/status/1408437152594202625

✨Like a toothpick fractal, but they’re wider✨

3.5hrs into the holiday and it’s been 100% Maths Art so far! 🤓💗 pic.twitter.com/NLZjA7eRyN

— Ayliean (@Ayliean) June 25, 2021

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It's crazy all of the ways that Pi shows up where the circle isn't around (at least obviously)
Curriculum Tags: MHF4U
https://twitter.com/pickover/status/1408423521236172804

This formula, tweeted by @fermatslibrary, caught my eye. It impresses us with its succinctness and unification of famous symbols. Like art and poetry, the formulation increases our sense of wonder, curiosity, and reverence for mathematics as a process of discovery and invention. pic.twitter.com/hVsHgjS8hr

— Cliff Pickover (@pickover) June 25, 2021

I think this is so cool. Something to have your kids verify as a math starter. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/fermatslibrary/status/1407686073455624195

10 factorial (10!) seconds is exactly 6 weeks pic.twitter.com/nvd8O3ritM

— Fermat's Library (@fermatslibrary) June 23, 2021

Math Links for Week Ending Jun. 18th, 2021

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Lot's of talk about Ontario's new destreamed Gr9 Math Curriculum. So I thought I would share this summary from @MakeMathMoments which includes this really informative video from @Jason_To on the history of streaming in Ontario. Even if you are not interested in the upcoming Gr9 destreaming, the video is pretty interesting. You should also check out the panel discussion from OAME that Kyle and John hosted with @Jason_To, @Pi_lab, @HKhodai and @MarkChubb3
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https://makemathmoments.com/grade-9-de-streamed-math/

Resource Links

I wasn't sure that I was interested in Taxicab problems but when I saw slide 9, I changed my mind. This really could be suitable for all grades. 
Curriculum Tags: All
https://teacher.desmos.com/activitybuilder/custom/60cb2e3f85299c6bf7e594e3

I created a @Desmos activity to introduce students to taxicab geometry. A fun little activity that shows students an example of an easy to visualize non-Euclidean geometry. #improvemyAB #iteachmath #geomchat https://t.co/7IIADQRJdB pic.twitter.com/nUIckOa5Yd

— Erick Lee HRCE Math (@TheErickLee) June 18, 2021

Video Links

This is part of a five video series from @YRDSB but (of course) I like this one the most. 5 Barriers in Math We Need to Disrupt and Dismantle. Be sure to click the link in the description to see the other videos. Thanks to @RoyanLee for pointing this one out.  
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https://www.youtube.com/watch?v=Qeegj72TwLA

What if Ada Lovelace was a superhero? @OnlineKyne seems to know.
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https://twitter.com/davidpetro314/status/1405159181825548292

watch the ✨ series premiere ✨ of Queens of Cosplay, starring the illustrious @onlinekyne 👇 pic.twitter.com/brzojzjGNu

— Showcase (@ShowcaseTV) June 15, 2021

I am not a fan of math "tricks" and I suspect neither is @Howie_Hua but that doesn't stop him from posting these TikTok videos of why math tricks work. That's where the important stuff is, not the trick itself but why it works. So watch his videos and then recreate them in your classes 

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https://twitter.com/howie_hua/status/1404593496938270725

https://twitter.com/howie_hua/status/1405317377063940103

New TikTok video: How to square numbers ending in 5 in your head and why it works. pic.twitter.com/z6rjrR2elH

— Howie Hua (@howie_hua) June 15, 2021

 

New TikTok video: Why do perpendicular lines have slopes that are opposite reciprocals of each other? pic.twitter.com/6MBQucsQYZ

— Howie Hua (@howie_hua) June 17, 2021

Image Links

I really think you can use this sort of thing as a math starter in class, in just about any grade where they know what a prime number is. It really is a beautiful result. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/pickover/status/1403897917581271041

Mathematics, Prime Numbers, 12.

Shiver in ecstasy. If p is a prime number.... https://t.co/VsmNq7rctY pic.twitter.com/Lszc5EgXj0

— Cliff Pickover (@pickover) June 13, 2021

Math nerds definitely do it better
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https://twitter.com/pickover/status/1405673858275872775

This is a mathematics joke.

Share with friends if you see the humor. pic.twitter.com/bHPBZipg1p

— Cliff Pickover (@pickover) June 17, 2021

Math Links for Week Ending Jun. 11, 2021

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Welp it's here. The new Ontario Gr9 math curriculum. Well the rational and the expectations at least. The supports are still being written. But you can check out the new expectations and the new strands (they follow more closely from elementary) on the Ministry's new digital site. There are also videos and supports for the change to destreamed. Of course if you just want to get to the expectations directly, go here. And don't forget the docs about what the changes are and the alignment with grade 7&8 in the resources section.
Curriculum Tags: MTN1W (note the new course code)
https://www.dcp.edu.gov.on.ca/en/curriculum/secondary-mathematics

Resource Links

One of the nice things about being part of the online math community is how people share. In this case, @GLewisOCT has created some great supports for the new math curriculum including a nice checklist and compact version of the expectations. 
Curriculum Tags: MTH1W
https://twitter.com/GLewisOCT/status/1402995741564444680

Website update!🤩I've created the #Grade9 #Destreamed #MTH1W Complete Curriculum Checklist and Condensed One-Page Summary. Resources will be added when available. #mathchat #OntEd #edtech LINK🔗: https://t.co/uXe06f5Wlv @realJ_Mitchell @Jason_To pic.twitter.com/DtDk2zbp2w

— Gerard Lewis, OCT (@GLewisOCT) June 10, 2021

Looking for some things to read this summer? Many of these I've mentioned before but it's nice to see them all in one place.
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https://twitter.com/MrValencia24/status/1400562105179377664

If you are a math educator looking for a good summer read, here are some highly recommended options 🙂📚📖#MTBoS #ITeachMath #MathEd #MathChat @JSEllenberg @misterwootube @Kit_Yates_Maths pic.twitter.com/aAhxfxmeR5

— Libo Valencia (@MrValencia24) June 3, 2021

Are you looking to do some playful math? Look no further than this post. It is chock full and you can learn to create a blog carnival to boot. 
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https://findthefactors.com/2021/06/07/yes-you-can-host-a-playful-math-education-blog-carnival/

Yes, YOU Can Host a Playful Math Education Blog Carnival https://t.co/Wf9wmIorJh

— Iva Sallay (@findthefactors) June 8, 2021

Who can't use a good dice game
Curriculum Tags: Gr7, Gr8
https://twitter.com/mathequalslove/status/1401645893267427329

Tic Tac Toe Dice Gamehttps://t.co/KRJzDpShzK #mtbos #iteachmath pic.twitter.com/yXDDYgO2Kc

— Sarah Carter (@mathequalslove) June 6, 2021

And here's another 

Curriculum Tags: Gr7, Gr8
https://twitter.com/mburnsmath/status/1400839994185420801

For info about how to play Two Dice Sums, why it's one of my favorites, & why the S didn't make an effective choice: https://t.co/1gWrBZkco8 https://t.co/otHLHmpXsn pic.twitter.com/vVoQ0KJUOr

— Marilyn Burns (@mburnsmath) June 4, 2021

And here is @MSBJacobs PolyPad version
Curriculum Tags:Gr7, Gr8

https://twitter.com/msbjacobs/status/1400860678282526721

I have just created a version of this wonderful game using Polypad from @MathigonOrg https://t.co/ZwuCnCgTCi
Maybe it's something that could be used if students are working at home?

— Michael Jacobs (@msbjacobs) June 4, 2021

And speaking of Mathigon, they now have added all of the irregular pentagons that tessellate. 
Curriculum Tags:All

https://twitter.com/MathigonOrg/status/1400815166124703750

Regular pentagons don’t tessellate, but there are 15 types of irregular pentagons that do – the last of which was only discovered in 2015. We just added all of them to Polypad: can you fit them together? https://t.co/m87MbfNgMi pic.twitter.com/RSRplNflbN

— Mathigon (@MathigonOrg) June 4, 2021

And if you need something to do in the last 20 days of math for gr 1-8 then @SCDSBMath has your back
Curriculum Tags: All
https://twitter.com/GLewisOCT/status/1400852816822943753

Our friends at @scdsbmath impress yet again! Here's the #Last20Days to consolidate math skills and strategies. 👏 Thanks @jacableSCDSB @kitluce1 @kaililynn for your effort, organization, and gorgeous design! #SCDSBLast20 #mathchat #edtech #OntEd 🔗LINK: https://t.co/xENXawHN7L pic.twitter.com/M5fz0TVLDM

— Gerard Lewis, OCT (@GLewisOCT) June 4, 2021

Video Links

Some mathematical philosophy from @Veritasium
Curriculum Tags: All
https://www.youtube.com/watch?v=HeQX2HjkcNo

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Data is everywhere
Curriculum Tags: MDM4U
https://twitter.com/simongerman600/status/1178112180891336704

I love this picture! The contents of a single firetruck spread out. Including six fire fighters. I consider this a map of the contents of the firetruck. Source: https://t.co/OJpiwoc8Gk pic.twitter.com/IqlTJBtTy0

— Simon Kuestenmacher (@simongerman600) September 29, 2019

Math Links for Week Ending Jun. 4th, 2021

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If you have not seen @NatBanting's #MenuMath activities, I strongly suggest you head over to his archive here. And if you have, then you will love that @PattyStephens has complied some Desmos versions in a collection. 
Curriculum Tags: All
https://teacher.desmos.com/collection/5f98fc1c334c5732255b6515

Love @NatBanting's #MathMenu tasks and have turned some into @Desmos activities and collected them here along with some by @mrchowmath and @davidpetro314 . If you have created a #Desmos #mathmenu task, please share! #iteachmath #MTBoS https://t.co/Jo2iIN4EYA

— Patty Stephens (@pattystephens) June 4, 2021

Resource Links

I like the idea of students translating algebraic expressions into sentences (We've created our own activities here and here). You would think, however, that by posting a bunch of expressions/equations around the room and have students write down sentences to represent them might not lead to much variance from students as they rotate through. But it turns out that might be wrong. Check out @MathEqualsLove's post to see:
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://mathequalslove.net/translating-algebra-around-the-room-activity/

Opinion Links

Helping students absorb various concepts in math class is can be achieved by making sure that multiple approaches are used. In this post, @MrValencia24 outlines reasons to use multiple approaches in the context of a quadratic inequality.
Curriculum Tags: MHF4U
https://blog.savvas.com/using-multiple-approaches-to-a-math-question/

Article Links

I definitely think that Euler's identity is beautiful but does @ProfKiethDevlin? 
Curriculum Tags: All
https://twitter.com/maanow/status/1400135610766090248

Is Euler's Identity truly beautiful? And if so, how? In the latest #MathValues, Keith Devlin (@profkeithdevlin) explores the layered beauty of mathematics through this identity. Check it out and share your thoughts with us: https://t.co/X0PZTesdzq #MathTwitter

— MAA (@maanow) June 2, 2021

Video Links

Who doesn't like a good debate about whether math was invented or discovered. In this case it's from Kira Miller via @TomRocksMaths
Curriculum Tags: All
https://tomrocksmaths.com/2021/05/05/is-maths-discovered-or-invented/

Who doesn't love a good 3D Seipinski's triangle
Curriculum Tag: All
https://twitter.com/MagicPi2/status/1399099548962799617

Sierpinski pyramid#mtbos #iteachmath #Math #Maths pic.twitter.com/0QRH1EZDqj

— Idan Tal (@MagicPi2) May 30, 2021

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Can't get enough of Geometric Art
Curriculum Tags: All
https://twitter.com/GeomeTribal/status/1398290092620398596

Roman mosaic from the 1st-2nd century found in Badalona. My favourite piece at the Archaeological Museum of Catalonia, in Barcelona pic.twitter.com/766ODwdle5

— Ancient Geometry (@GeomeTribal) May 28, 2021

You've probably heard of the Golden Ratio but have you heard of the Plastic Number?
Curriculum Tags: MCR3U, MHF4U
https://twitter.com/fermatslibrary/status/1397910210820427779

A way to define the Golden Ratio is the value of x for which the 3 vertices are collinear. The equivalent for rectangular boxes is called the Plastic Number named by the dutch monk Dom Hans van der Laan. pic.twitter.com/JJP7IFsQTs

— Fermat's Library (@fermatslibrary) May 27, 2021