Math Links for Week Ending Nov 27th, 2020

Featured Links
With coding being explicitly part of the new math curriculum here in Ontario, it's always good to have places to go for resources and ideas
Curriculum Tags: Gr7, Gr8
https://twitter.com/learningcode/status/1331644580698189825

Our annual Canada Learning Code Week starts on December 1! Learn a new coding concept by completing a #clcWeek activity and enter our contest for a chance to win a prize pack (valued at $950).For more details and to register: https://t.co/9sncvg9JXI pic.twitter.com/H4PHJQlZNF

— Canada Learning Code (@learningcode) November 25, 2020

Resource Links
Mathematical origami is a great place to take your kids for some fun spatial reasoning. 
Curriculum Tags: All
https://twitter.com/alisonkiddle/status/1330074013675216896

There are various instructions available online... https://t.co/PoZZuyClsV shows how to make the 30 modules and I found https://t.co/Mbdu57i3Jy really useful for putting it together!

— Alison Kiddle (@alisonkiddle) November 21, 2020

I like when teachers are simple but creative about what they do in classes. In this case @FawnPNguyen has a nice idea of how to run her test reviews. "To review for it, I need you to look through the ten problems on this paper. You’re more than welcome to work on the questions, but you don’t have to, not for me anyway. I need you to just examine them enough to identify two questions on there that you feel confident about, that you have no problem solving them. Then, I need you to identify two questions that you would like to get help on most. That’s it."
Curriculum Tags: All
http://fawnnguyen.com/reviewing-for-a-test/

Video Links

If you are looking for some examples of where formulas are used in real life then you might like @'s channel. In this video there are several calculations used to show the effectiveness of using equations to get things done
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://www.youtube.com/watch?v=NYvKxsYFqO8

Image Links

Here is a great prompt to deal with fraction operations. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/MarkChubb3/status/1332050483133952000

“1 white rod is worth 1/5

Make an image worth 20”

What would you ask Ss as you walk past?

This is based on what YOU notice and what YOU wonder about you kids’ work and thinking!#MTBoS #iteachmath pic.twitter.com/4yUyMKFifu

— Mark Chubb (@MarkChubb3) November 26, 2020

More Pythagorean puzzles from @JamesTanton
Curriculum Tags: Gr8, MPM1D, MFM1P
https://twitter.com/jamestanton/status/1330481718315380737

No power of 2 is the hypotenuse of a right integer triangle. (Thus neither is any power of 4.) All powers of 5 are hypotenuse values. Is there an integer right triangle with hypotenuse a power of 3? (A power of 6? 7?) pic.twitter.com/OkM0PGl2w3

— James Tanton (@jamestanton) November 22, 2020

      

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