Math Links for Week Ending Nov 20th, 2020

Featured Links
I really appreciate these long form videos from @StandUpMaths about election fraud and (my favourite) Benford's law. 
Curriculum Tags: MDM4U
https://www.youtube.com/watch?v=etx0k1nLn78
https://www.youtube.com/watch?v=aokNwKx7gM8

Resource Links

I have mentioned #SlowRevealGraphs before but it's worth mentioning again. It's a nice structure to get kids talking about Data Management topics. With this one from @JennaLaib we are looking at an infographic of wealth distribution in Toronto. 
Curriculum Tags: Gr7, Gr8, MDM4U
https://slowrevealgraphs.com/2020/10/26/income-inequality-in-toronto/

Video/Audio Links
It's always fun to watch @AnnieK_P create
Curriculum Tags: All
https://twitter.com/anniek_p/status/1327707566936367107
https://twitter.com/anniek_p/status/1327760269397942273

Some Isometric Hitomezashi. #MathArtChallenge cc @maths_kath pic.twitter.com/EgI1cdJbJY

— Annie Perkins (@anniek_p) November 14, 2020

Honestly a fairly unexpected result. And halfway stage, too. See next tweet for still pictures. #MathArt pic.twitter.com/YZJ6DV3rY7

— Annie Perkins (@anniek_p) November 14, 2020

Nice dynamic tessellation 
Curriculum Tags: Gr7
https://twitter.com/KangarooPhysics/status/1327674314808832000

pic.twitter.com/MZm5GDZlOu

— Daniel Piker (@KangarooPhysics) November 14, 2020

@Radiolab does their take on why Benford's law doesn't suggest there is election fraud and their original episode on Benford's law was tried to use as evidence that there was. 
Curriculum Tags: MDM4U
https://www.wnycstudios.org/podcasts/radiolab/articles/breaking-benford

Image Links
Some reference diagrams for teaching circle trig
Curriculum Tags: MCR3U
https://twitter.com/SegarRogers/status/1327923982796992512

Made diagrams for teaching circle-trigonometry procedures. i.e. avoiding ratios altogether. Interested in whether this is a good idea, a ridiculous idea (maybe!), potential problems further down the line, etc.@jamestanton @malcoad @AshDolan6451 @LiEmers @samanthajmch pic.twitter.com/VMAPLh5kE5

— Segar Rogers (@SegarRogers) November 15, 2020

Why not use what you have to model the area of a circle?

Curriculum Tags: Gr7
https://twitter.com/howie_hua/status/1326349817761558529

We're deriving area formulas so I asked my students "What do you notice?" with these Laughing Cow cheese wedges. pic.twitter.com/oVkoEceY4b

— Howie Hua (@howie_hua) November 11, 2020

    

Math Links for Week Ending Nov. 13th, 2020

Featured Links

Last week was #BlackInMathWeek and the participation was awesome on Twitter. Check out that hashtag and the #BlackInMathRollCall hashtags for all the great Tweets
Curriculum Tags: All
https://twitter.com/hashtag/BlackInMathWeek?src=hashtag_click&f=live
https://twitter.com/hashtag/BlackInMathRollCall?src=hashtag_click&f=live

It's officially #BlackInMathWeek!!! Which means it's time for introductions!!! Tell us about who you are and where you're at using the hashtag #BlackInMathRollCall!!! And tag us @BlackInMath! pic.twitter.com/pslES4dsvs

— Black In Math (@BlackInMath) November 8, 2020

Resource Links

In this post @FawnPNguyen takes three "classic" math starters and tweaks them giving them fresh legs. Take a look. 
Curriculum Tags:All
http://fawnnguyen.com/changing-up-popular-warm-up-routines/

Last week I shared some of my resources from the @MakeMathMoments virtual conference and now @SaraVDWerf is sharing some of hers as well as resources from CMC South. You can always count on Sara to have great stuff. 
Curriculum Tags: All
https://www.saravanderwerf.com/cmc-south-make-math-moments-virtual-summit-resources/

Video Links

Oh man, who doesn't like and infinite fractal?
Curriculum Tags: All
https://twitter.com/pickover/status/1325989613211619328

Let's look inside a fractal Menger sponge. https://t.co/MTpfl91UJ5 pic.twitter.com/kSlTMN7K7v

— Cliff Pickover (@pickover) November 10, 2020

It is problematic that so many people profess being bad at math. We have a lot of work to do
Curriculum Tags: All

https://twitter.com/Jason_To/status/1324922564100190208

For crying out loud please teach kids to be flexible with numbers and strategies or else they grow up, say they’re terrible at math 🙄 and just act the fool on TV https://t.co/sgX9JMkNmH

— Jason To (@Jason_To) November 7, 2020

Image Links

You can always count on @JamesTanton to give us a prompt to help us think about inequalities in such a fun way
Curriculum Tags: MHF4U
https://twitter.com/jamestanton/status/1326879298914054146

A favorite: Can you place the numbers 1 through 8 in the boxes shown and respect the inequality between each pair of neighboring boxes? If so, how many different solutions are there? [More generally, do puzzles like these always have at least one solution?] pic.twitter.com/ZQNCeD82M9

— James Tanton (@jamestanton) November 12, 2020

Math Links for Week Ending Nov 6th.

Featured Links

This weekend I am part of the free @MakeMathMoments Virtual Summit. There is a pretty good slate of speakers (and me :-)  ) Some are live, some are pre recorded. Even if you read this a few days late, you can still see some of the recording (just do it before Nov13). Just go to the website and register. 
Curriculum Tags: All
https://summit.makemathmoments.com/schedule/  

Resource Links

One of the things I'm talking about in my session is that I have been playing around with using a Desmos Activity to create online tests for students that are similar but have different values in the questions for each student. This activity isn't one of those tests. Instead it's a compilation of a bunch of possible types of questions that could be created. And by type, I don't mean the type of math but instead, how many random variables are needed to generate the questions. Check out the description for a couple of videos too. One on what the file is, in general, and the other on how you might use it to create your own questions.
Curriculum Tags: All
https://teacher.desmos.com/activitybuilder/custom/5f8c7349e0247f0cdae253ae

Though not as frequently as me, @Mathsgem posts some of her favourite found resources on the Internet. Here's her latest:
Curriculum Tags: All
https://twitter.com/mathsjem/status/1322826202252533760

New! My 137th gems post. Ideas, resources and updates for maths teachers.https://t.co/FTSeTlJ6HJ

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

— Jo Morgan (@mathsjem) November 1, 2020

I have always liked how @MathEqualsLove shares her stuff and now she has a new website to do it. Check it out.
Curriculum Tags:All
https://mathequalslove.net/

My new website is LIVE! I switched from Blogger to Wordpress and finally bought my own domain name. I hope you enjoy visiting https://t.co/8JreGD200v. Hopefully the new navigation menu will make finding stuff much faster and easier! #mtbos #iteachmath pic.twitter.com/UDBvLYroAy

— Sarah Carter (@mathequalslove) November 1, 2020

If you didn't know already, @pgliljedahl finally got a book about the Thinking Classroom and @wheeler_laura not only does some illustrations for the book but she's got the book club too
Curriculum Tags: All
https://ca.corwin.com/en-gb/nam/building-thinking-classrooms-in-mathematics-grades-k-12/book268862

#ThinkingClassroom book club schedule is ready. We'll meet 8pm EST Mondays starting Nov. 9th.
Who's in? pic.twitter.com/eH4kqNJJhO

— Laura Wheeler (@wheeler_laura) November 1, 2020

New from @christophe_sew, practice on optimizing rectangles

Curriculum Tags: MPM1D, MCV4U
https://twitter.com/Christophe_Sew/status/1323492785530511360

Back in a classroom next week!@desmos lesson on OPTIMISATION (IB AA SL).

It seemed to work well. Students "solved" the initial problems before using optimisation to replicate the result.https://t.co/u1h9r4q7wG@AlgebraDesmos @davidpetro314 #iteachmath #mathsed #mathschat pic.twitter.com/zi8ZLYpikd

— Mr. S (@Christophe_Sew) November 3, 2020

Article Links

Although I wouldn't characterize exponential decay as obscure, here are 5 obscure math equations that rule the world. 
Curriculum Tags:All
https://www.discovermagazine.com/the-sciences/5-obscure-formulas-that-rule-the-world 

You probably don't think about the Dirac equation on an average day, but it describes just about everything that happens to you. https://t.co/2YA0YhRsjG

— Discover Magazine (@DiscoverMag) November 1, 2020

Video/Audio Links

My latest podcast is out with @Pi_Lab and @PeterTaylor77 talking about animations and exponential functions ahead of their upcoming webinar. 
Curriculum Tags: MHF4U, MCR3U
https://talks.oame.on.ca/season-3 





A couple of cool visualizations by @Matthen2
Curriculum Tags: MHF4U
https://twitter.com/matthen2/status/1322483571978760193

how to draw a logarithmic spiral. Use evenly spaced radial rays, and draw a perpendicular from one ray until it hits the next. repeat pic.twitter.com/f2NTPqLgSG

— Matt Henderson (@matthen2) October 31, 2020

I like this one from @Matthen2 to prove Pythagorean Theorem

Curriculum Tags: Gr8, MPM1D, MFM1P
https://twitter.com/matthen2/status/1322843458566983680

proof of an important circle theorem pic.twitter.com/MM1uAvBJdy

— Matt Henderson (@matthen2) November 1, 2020

Image Links

This is a fun way to have number sense be more play based. 
Curriculum Tags: Gr7 
https://twitter.com/MarkChubb3/status/1322554205295575042

Creating images worth 2000.

Can you tell what each rod is worth?
How did you count?

Creativity opens up learning and leads to richer discussions! pic.twitter.com/NKtSBTbQgq

— Mark Chubb (@MarkChubb3) October 31, 2020

Have you seen these image based solving equations puzzles on the Interwebs? Here is a fun idea to have your kids make them up using Google Slides (or similar)
Curriculum Tags: Gr7, Gr8
https://twitter.com/GiftedTawk/status/1322524994061127680

My students created this Math Picture Puzzle Jamboard based on their hobbies or passions. Interested in a copy? Would you like to swap Jamboards with your students’ puzzles? pic.twitter.com/fyP5vXZPNq

— Julia's #STEAMing up Questions (@GiftedTawk) October 31, 2020

This is an awesome probability resource. 
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U

https://twitter.com/xkcdComic/status/1322376151226986496

Probability Comparisons https://t.co/xZn0qRVtoe https://t.co/jCUNkWGEFB pic.twitter.com/cP5NZrPtX9

— XKCD Comic (@xkcdComic) October 31, 2020

Deep questions from @JamesTanton about parabolas
Curriculum Tags: MCR3U
https://twitter.com/jamestanton/status/1323971119838158848

If a quadratic function has odd integer outputs on three consecutive integer inputs, must it have odd integer outputs on *all* integer inputs? pic.twitter.com/6IjrA7PGbC

— James Tanton (@jamestanton) November 4, 2020

You can always count on @MonaChalabi to give a unique perspective, in this case it's comparing winning the lottery to casting the winning vote. Neat comparison. 
Curriculum Tags: MDM4U
https://twitter.com/MonaChalabi/status/1323765548698710016

A voter in America is five times more likely to cast THE decisive vote in the presidential election than a lottery player is to win the jackpot. Some of you still have time to make a good gamble! pic.twitter.com/tA2ScDce7L

— Mona Chalabi (@MonaChalabi) November 3, 2020

I thought this was an interesting way to look at how the voting was going in those slow to count states. Extrapolation to the rescue. 
Curriculum Tags: MPM1D, MFM1P, MDM4U
https://twitter.com/wayner99/status/1324188525114306561

Here is a graphic example of how that has evolved today in PA and GA. But we haven't received updates on NC. pic.twitter.com/20bVhKcifv

— Wayne Kozun (@wayner99) November 5, 2020

Math Links for Week Ending Oct 30th, 2020

Featured Links

Do you have a grade 10 or 11 student here in Canada who is interested in STEAM? Then they may want to apply to take part in the SHAD program. The Program runs in July but the deadline is this December. Students participate in this University based program that "provides a unique opportunity for students to access university academics, STEAM and entrepreneurship content and hands-on learning experiences that go way beyond the high school curriculum."
Curriculum Tags: All
https://www.shad.ca/shad2021-educators/

Teachers: Students are craving a sense of community & purpose, and Shad wants to make a difference. Help us connect with grade 10 & 11 Ss interested in #STEAM by sharing the Shad2021 application and bursary information. Find out more here: https://t.co/F4q4kuhFrC @ShadNetwork

— Jennifer-Amy Murphy (@JenAmy8) October 26, 2020

Resource Links

You can take a look at this week's @Desmos Live video below where they released a new activity The Tortoise and the Hare (good for all of your describing linear motion needs). But what I wanted to point out is their list of all of their newly released activities all together in this collection. Some of these were even news to me. Check them out here:
Curriculum Tags:All
https://teacher.desmos.com/collection/5e44be054273ab1a7f4e7471

Here's a fun websketch from @DPScher based on a @JamesTanton problem. It's a puzzle based on balances where there is a connection to solving equations but with a bit more complexity. 
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
http://www.sineofthetimes.org/tantons-two-pan-balance-puzzle/

Video Links

This week on Desmos Live, three things: a new activity, talk about online assessment and checking in with 5 educators doing their best this year. 
Curriculum Tags: All
https://www.youtube.com/watch?v=vsdVtAhR5Iw

Image Links

Here's a fun pattern prompt from (go figure) @FawnPNguyen. And don't forget to check out some of the work in the comments.
Curriculum Tags: MFM2P, MFM2P, MCR3U, MCF3M
https://twitter.com/fawnpnguyen/status/1319690854181662722

Happy Friday, everyone! I have a pattern for you and your kiddos. Lots of fun numbers to notice and wonder.

Thank you for NOT posting the answer so we can all play along.

(What are the colored numbers in step 43 and step n?)#MTBoS #iteachmath #numberpatterns pic.twitter.com/7NADHOJIha

— Fawn Nguyen (@fawnpnguyen) October 23, 2020

Here's another prompt from @DonFraser9 and in it he defines a new operator
Curriculum Tags: All

https://twitter.com/DonFraser9/status/1321164752459079687

#MTBoS #iteachmath ⁦@paul_math⁩ ⁦@ddmeyer⁩ ⁦@DanShuster⁩ ⁦@fawnpnguyen⁩ ⁦@Mathgarden⁩ ⁦@MatthewOldridge⁩ ⁦⁦@MathletePearce⁩ ⁦@drcathybruce⁩ ⁦@JRappaport27⁩ ⁦@AlexOverwijk⁩ ⁦@MaryBourassa⁩ ⁦@davidpetro314⁩ pic.twitter.com/jDPVoRzlUW

— Don Fraser (@DonFraser9) October 27, 2020

Math Links for Week Ending Oct 23rd, 2020

Featured Links 

Just in time for Halloween, @Desmos releases two new activities, one for solving inequalities and the other on plotting points to create an animated pumpkin. They were released at the most recent Desmos Live - see video below 
Curriculum Tags: MHF4U, Gr7, Gr8, MPM1D, MFM1P
https://teacher.desmos.com/activitybuilder/custom/5f8f9b53da3d9727dff0918f
https://teacher.desmos.com/activitybuilder/custom/5f80b2099c15a9270328b8c8

Some extremely cool, exclusive new stuff coming to #DesmosLive in two hours! cc @cmmteach @pejorgens https://t.co/ic5Bc1D0aN pic.twitter.com/Ra88CktBPY

— Desmos.com (@Desmos) October 22, 2020

Resource Links 

Here is a great list of Desmos activities all aligned to Ontario math curriculum from @ChrisLeeCHSS.
Curriculum Tags: All
https://docs.google.com/spreadsheets/d/1QdNQ5l8qaMXcn8fPy4UKvx5DxXdfKo_hwnRLe5POu9Y/edit#gid=0

Thanks for the shout out @davidpetro314 Here are some more of my favourite @Desmos @madewithDesmos @desmosbank activities: https://t.co/vpsNvaSRp2

— Chris Lee (@chrisleechss) October 18, 2020

Video Links 

Desmos Live
Curriculum Tags: All
https://www.youtube.com/watch?v=mz4xDo7IRyc

 Image Links 

I like when simple conversations yield more resources. In this case, @DonFraser6 posts a prompt and then @MarkChubb3 jumps on board. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/DonFraser9/status/1318659269689024514
https://twitter.com/MarkChubb3/status/1318943932521320450

Covid Numbers .... What do you notice ? wonder ? #MTBoS #iteachmath ⁦@Mathgarden⁩ ⁦@MathletePearce⁩ ⁦@davidpetro314⁩ ⁦@raspberryberet3⁩ ⁦@Bedford_Mrs⁩ ⁦@LareRomano⁩ ⁦@paul_math⁩ ⁦@drcathybruce⁩ ⁦@CathyMarksKrpan⁩ pic.twitter.com/b1RNhUZj3w

— Don Fraser (@DonFraser9) October 20, 2020

I shared this set of data in early September to help us see that the data we pick (and don’t pick) as well as the way we share it can help us make something seem not so bad or scary. pic.twitter.com/RaolQhLFXC

— Mark Chubb (@MarkChubb3) October 21, 2020

Math Links for Week Ending Oct. 16th, 2020

Featured Links

I think any time that you can contextualize math in a way that connects to students then you are probably on the right track. And so if you are working with cylinders, then you might like this task from @MrAspinal connecting cylinders to Super Mario. Have fun
Curriculum Tags: Gr7, Gr8
http://brianaspinall.com/3d-measurement-just-how-big-is-a-super-mario-pipe/

3D Measurement - Just How Big is a Super Mario Pipe? https://t.co/7mre6il3av

— Brian Aspinall (@mraspinall) October 15, 2020

Resource Links

Connecting right angled triangles to degrees and radians from @christophe_sew with this self checking activity

Curriculum Tags: MHF4U
https://twitter.com/Christophe_Sew/status/1316462673782075399

Trigonometry in the Coordinate Plane [@desmos distance learning]

Leading my iGCSE Add Maths (0606) into the unit circle@AlgebraDesmos @davidpetro314 #ITeachMath #ImproveMyAB #Trigonometry

Link: https://t.co/GxIYsSTl0W pic.twitter.com/mI4ZvmqT0n

— Mr. S (@Christophe_Sew) October 14, 2020

Are you looking for some sample slides to help you create your own @Desmos activities. Then @ChrisLeeCHSS has some of his favourite slides that you can copy into your own activities and modify. 

Curriculum Tags: MCR3U, MHF4U

https://twitter.com/chrisleechss/status/1315684494481989632

To celebrate my 100th created @Desmos Activity, I have put together some of my favourite slides with features for you to copy, edit & use. Shout out to those whose slides I have "borrowed" and learned from! @madewithDesmos #MTBos #iteachmath @desmosbank https://t.co/84HchjiI1g

— Chris Lee (@chrisleechss) October 12, 2020

Video Links

I was reminded of this video this week. It's a great connection between coding and mathematics and with the new Ontario math curriculum's inclusion of coding, it seems like it's a good fit. Though some of the math moves into high school, it could easily be used in elementary to spark interest. 
Curriculum Tags:All
https://www.youtube.com/watch?v=_IZMVMf4NQ0

Image Links

So that's how factoring quadratics works. Thanks to @Joe_Sisco for pointing this one out
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C
https://twitter.com/howie_hua/status/1316910572617797632/photo/1

Okay I'm pretty proud of this math meme I made. pic.twitter.com/nZSMHxLU0g

— Howie Hua (@howie_hua) October 16, 2020

A nice little @OpenMiddle Activity when dealing with angle relationships

Curriculum Tags: Gr8, MPM1D, MFM1P
https://twitter.com/MrJohnRowe/status/1316504184649183234

Here's a little @openmiddle problem I made, which is easy to start and challenging to finish. #MTBoS #iTeachMath pic.twitter.com/0FINMbAt8J

— John Rowe 👨🏽‍🚀 (@MrJohnRowe) October 14, 2020

Math Links for Week Ending Oct 9th, 2020

Featured Links

It's Global Math Week. For the last few years, lead by @JamesTanton and @GlobalMathProj, teachers around the world have been on a mission to spread joyous mathematics to their students. This year is no different and starting Oct 10 (10/10) we hope that you will bring the idea of Exploding Dots to your kids. Check out the website for all the activities. 
Curriculum Tags: All
https://globalmathproject.org/exploding-dots/

Resource Links

Some of us are teaching face to face, some teaching fully online and some with a combination of the two. If you are doing anything online with your students then you might like this summary of tips and tricks for engaging your students online (or face to face) from @Wheeler_Laura
Curriculum Tags: All
https://sites.google.com/ocdsb.ca/wheeler/resources-tools-for-teachers/remote-learning

I've put together a list of some ideas for synchronous & asynchronous activities for Ts with cohorts split between at-home and in-class in my school.
Would love to hear what you think might be missing from my list?https://t.co/OxJXEpnIaw

— Laura Wheeler (@wheeler_laura) October 6, 2020

If you want some insight into the new Ontario math curriculum then you don't want to miss some of the webinars to help support them. 
Curriculum Tags: All
https://twitter.com/rossisen/status/1313526712207060993

If you'd like to receive regular updates (maximum 1 per week) about the Elementary Math Curriculum Resource Project when new resources or webinars are posted to the https://t.co/t0HBNipKEQ website, you can sign up for the newsletter here: https://t.co/xwzKUjrlC4 @OAMEcounts

— Ross Isenegger (@rossisen) October 6, 2020

Article Links

Just a reminder that, maybe, understanding data management is more important than calculus. And although there have been some concerns with the group Levitt got together for this for not having enough actual teachers, I still pretty much agree with the sentiment. Thanks to @Joe_Sisco for pointing this one out
Curriculum Tags: All
https://www.salon.com/2020/09/26/teaching-data-science-instead-of-calculus-high-schools-math-debate/

Video Links

Do you like basketball and dat visualizations? Then this is for you. Thanks to @JoelBezaire for this one. 
Curriculum Tags: MDM4U
https://twitter.com/kirkgoldsberry/status/1312902491286253568

LeBron James now ranks 2nd in playoff assists in NBA history, trailing only Magic Johnson. He just passed Stockton.

He ranks 1st all-time in playoff points and 2nd in assists.

Here are all the King’s postseason dimes
(assisted shot locations) pic.twitter.com/mUGhYSrFnI

— Kirk Goldsberry (@kirkgoldsberry) October 4, 2020

Image Links

This could be a really quick math starter. 
Curriculum Tags: All
https://twitter.com/MarkChubb3/status/1312914605916659712

Can someone confirm for me the authenticity of this graphic:#iteachmath #mtbos pic.twitter.com/5YtrFKv1HC

— Mark Chubb (@MarkChubb3) October 5, 2020

I feel like this trick has been done before with covid data already. Seems to be a popular "how to lie with statistics" method. 
Curriculum Tags: MDM4U
https://twitter.com/sturdyAlex/status/1314563677144657922

Comparing the gov’t Covid19 maps for end of September and start of October, it looks as if things are getting better.

UNTIL you notice they’ve changed the numbers corresponding to each colour. Had they used the same ones, most of the country would be red or dark red.#BitSneaky pic.twitter.com/61u1dd4G1U

— Alex Andreou (@sturdyAlex) October 9, 2020