Math Links for Week Ending Dec 25th, 2020

Featured Links

@TimBrzezinski has your back when it comes to dynamic Open Middle problems using @Geogebra. He's created, of course, geometry but also arithmetic, algebra, trig and calculus problems. Take a look
Curriculum Tags: All
https://www.geogebra.org/m/jazvukfd

Here, an entire collection of @openmiddle problems created in @geogebra : https://t.co/99ZxfoLVkQ.

Create a GeoGebra class from any of these. Actively engage Ss & watch their progress in real time. More will be added to this growing set. 🙂 #MTBoS #ITeachMath #RemoteLearning

— Tim Brzezinski (@TimBrzezinski) December 21, 2020

This new @openmiddle problem with feedback can help Ss think critically re: graphing trig functions w/amplitude & period change. Create a @geogebra class from https://t.co/ToRIRKVK2s, & work together in remote or hybrid settings! #MTBoS #ITeachMath @robertkaplinsky #math #maths pic.twitter.com/DmFMzHpFAv

— Tim Brzezinski (@TimBrzezinski) December 18, 2020

Resource Links

@AlexOverwijk asks a question and posts some of his student's unique solutions in the comments. Some great discussion shows up too. 
Curriculum Tags: MHF4U
https://twitter.com/AlexOverwijk/status/1071137538574757888

Help me out.
How do you want students to solve exponential equations when the bases are different?
For example:

2^(3x-5)=7^(-x+1)

or some variation of this.

Go #mtbos #iteachmath

Asking because I didn’t tell the S’s how-you would not believe what they came up with.

— Alex Overwijk (@AlexOverwijk) December 7, 2018

Here's another one of @Mathsjem's resource posts. Much like I do here, she compiles great things she finds on the web for math. In this post, place value, fractions, pie graphs, speed-distance-time and more. 
Curriculum Tags: All
https://www.resourceaholic.com/2020/12/5-maths-gems-139.html

New! My 139th gems post. Ideas, resources and updates for maths teachers. 💎https://t.co/eHK4AjE9aC

Hat tips to follow.

I know some of you will not want to read this right now - a break is in order - but it will still be there in January! 😀#mathsgems #mathschat #teammaths pic.twitter.com/kl3gwiMfCw

— Jo Morgan (@mathsjem) December 18, 2020

Opinion Links

Do you want to see how math connects with heavy metal music? Well @MathGarden and @HeavyMetalMaths have figured that out
Curriculum Tags: All
https://sunilsingh-42118.medium.com/how-does-a-love-for-heavy-music-embolden-a-love-for-mathematics-c254c947f0b4

Video Links

On the latest @Desmos Live they go through the best they've seen this year. Some cool stuff here. I totally agree with the last one. 
Curriculum Tags: All
https://youtu.be/MzSw00SSPEM?t=1064

Check out all the cool animations from @MattHen2
Curriculum Tags: All
https://blog.matthen.com/archive

10 years ago I started my maths animation blog on tumblr pic.twitter.com/jTLAKAjpOi

— Matt Henderson (@matthen2) December 24, 2020

Here is a Christmas example of 3D geometry in real life from @standupmaths
Curriculum Tags: All
https://www.youtube.com/watch?v=TvlpIojusBE

Image Links

The "truth" about statistics 
Curriculum Tags: MDM4U
https://twitter.com/xkcdComic/status/1340071757525311488

Statistics https://t.co/g2vbvtFe2e https://t.co/Nfs9xcG7eK pic.twitter.com/2oLoV1LCfc

— XKCD Comic (@xkcdComic) December 18, 2020

Some cool responses in the comments from this classic angle problem (including one from me and @MSBJacobs)
Curriculum Tags: MPM1D, MFM1P
https://twitter.com/jamestanton/status/1340289039052599303

A classic: What can you say about the sum of the measures of the angles at the tips of a wonky (or not wonky) five-pointed star? pic.twitter.com/ffhBGcUp1W

— James Tanton (@jamestanton) December 19, 2020

What a great simple task dealing with adding fractions. Be sure to check out the comments for some examples
Curriculum Tags: Gr7, Gr8

https://twitter.com/mathhombre/status/1337603004619501569

goal is to make four or more different fractions that sum to one. What about Lydia's solution? #fractionchat pic.twitter.com/kvtOYeFhVj

— John Golden (@mathhombre) December 12, 2020

There is a lot of data that can be mined in Google Trends. I have written about how you can use this in class in the past here. But why not look at this year's Year in Search
Curriculum Tags: Gr7, Gr8, MDM4U
https://trends.google.com/trends/yis/2020/GLOBAL/

Interesting! Many of these are absolutely in my search history and we know that Google Classroom has certainly been a vital tool for SO many during this pandemic. Tesla stock definitely never entered my search realm 🤷‍♀️ pic.twitter.com/PQniJ0WApv

— Kim Bouchard (@KimMomofNine) December 23, 2020

Math Links for Week Ending Dec. 18th, 2020

Featured Links 

I really love this visual from @AledaKlassen about triangulation of assessment reminding us that assessment isn't just writing tests. Thanks to @HTheijsmeijer for this one 
Curriculum Tags: All
https://twitter.com/HTheijsmeijer/status/1338566586677014530

THIS!!
How are students showing us what they know? How are they, formally and informally, demonstrating their knowledge? Does "COP" collection of evidence have to look the same for every student? No!
Thank you, @aledaklassen! @OMCAmath pic.twitter.com/NohMMGKtQV

— Heather Theijsmeijer (@HTheijsmeijer) December 14, 2020

Resource Links 

It seems that @Kurt_Salisbury has been knocking it out of the park lately with the @Desmos activities. A couple of weeks ago he had an Among Us activity and this week he's turned @SaraVDWerf's 5x5 game. I like how it keeps score for the class. It's great for a starter game in any class.  Check it out. 
Curriculum Tags: All
https://twitter.com/kurt_salisbury/status/1339348097063940096

I think it is good to go. A modified version of @saravdwerf 5X5 game. Thanks for all who tested. Let me know if you find issues. #iteachmath #mtbos

Check out this @Desmos activity: 5 X 5 Number Game! https://t.co/ORgSyJAbu9

— Kurt Salisbury (@kurt_salisbury) December 16, 2020

There has been a lot of assessment based Desmos activities revolving around assessment and here @LW has actually created a plugin for Chrome that strips the info out of the summary page and throws it into a csv file. Very cool stuff. 

Curriculum Tags: All

https://twitter.com/lwThinking/status/1339734644934111232 

I made this little extension. Maybe it can help some folks. Let me know if you find bugs or want features. https://t.co/qlE4gefwu5

— Mx. Gregory Epstein (@lwThinking) December 18, 2020

Video Links 

Leave it to @Von_Oy to come up with such an elegant looking @Desmos graph in under 80 lines of code. 
Curriculum Tags: All
https://twitter.com/von_Oy/status/1339053988398895104

I made something fluttery... https://t.co/uBnc6z6bUm#mathart with @Desmos pic.twitter.com/vV468kZnr1

— Suzanne von Oy (@von_Oy) December 16, 2020

Image Links 

Now that's a lot of snow. Here's an image that could be used for imperial/metric unit conversions. 
Thanks to @Joe_Sisco for this one
Curriculum Tags: Gr7, Gr8
https://twitter.com/sayakasofiamori/status/1339884908236271616

Numerous #snowfall records have been broken in #Japan, with the top being 219cm in Fujiwara. If there’s 200cm of wet snow on a 100 square meter (1,070 square feet) roof, it would weigh 60 tons. That’s like 400 sumo wrestlers sitting on top of a house🇯🇵 pic.twitter.com/KREHECdrCs

— Sayaka Mori (@sayakasofiamori) December 18, 2020

 

Math Links for Week Ending Dec 11th, 2020

Featured Links

Awesome work from @MathTechCoach to get kids ready for the Christmas season. Whether you are teaching face to face or virtual, this one slide Desmos Challenge creator is a fun way to talk about transformations by making a virtual snowflake
Curriculum Tags: All
https://twitter.com/MathTechCoach/status/1335277681471086592

These #Snowflakes are very cool. If you want to use this with your classes, this one allows you to change colors. https://t.co/vgaZ3dDaLr

This is is just black and white (which is mighty cool) https://t.co/pqQhJ20Lhk pic.twitter.com/vIHHClexht

— Steve Phelps (@MathTechCoach) December 5, 2020

Resource Links

I have always really loved the data set of deaths and survivors from the Titanic sinking. When dealing with percents, data and inferences it's a great data set and the folks at Desmos have Desmosified it. Try it out and you won't be disappointed. 
Curriculum Tags: Gr7, Gr8, MDM4U
https://blog.desmos.com/articles/desmosify-finding-associations/

Video Links

This was such an odd math mistake. There was a foot note on the paper indicated by a super script 4 and she thought that was the power of 4. Sheesh
Curriculum Tags: All
https://twitter.com/bobloch/status/1336689958787149831

Hey, did you see that last night's Powerball numbers were DIFFERENT from last weeks? There's a 1 in 280 million-squared chance of that happening - they must be doing something to those poor ping balls - it's fraud I tell ya!
Some very dangerous math mis-application here. https://t.co/a6qAAL4eaG

— Bob Lochel (@bobloch) December 9, 2020

Image Links

Using data in sports is getting more popular but it's hard to fight against tradition
Curriculum Tags: MDM4U
https://fivethirtyeight.com/features/why-are-we-still-returning-kicks-in-college-football/

Math Links for Week Ending Dec 4th, 2020

Featured Links

So @JReulbach is the queen of assessment with Desmos and as you may have seen here, I have been dabbling in Desmos self assessment tasks and thanks to Julie, I now know that there is a pile of other people who have been creating them too. Julie has been collecting them all on this post and you can add your own too by submitting them on the Google Form
Curriculum Tags: All
https://ispeakmath.org/desmos-self-checking-activity-builders/

If you are looking for self-checking or assessment @Desmos activities, here is a collection. Also, if you made one, please add it to the Google Form. :) https://t.co/XaLjLbboJl

— Julie (@jreulbach) November 27, 2020

Resource Links

If you are looking for and example of how you can't hide from data. In this case, it's that C19 is real and people sometimes don't even realize they have it. That is, the large portion of complaints about scented candles (likely caused by loss of smell) shows how wide spread C19 is. Make sure you look at the thread for all the info.
Curriculum Tags: MDM4U
https://twitter.com/kate_ptrv/status/1332398737604431874

I couldn’t just walk past this Tweet, so here is some fun #dataviz

Scented candles: An unexpected victim of the COVID-19 pandemic 1/n https://t.co/xEmCTQn9sA pic.twitter.com/tVecEiX5Jc

— Kate Petrova (@kate_ptrv) November 27, 2020

New styles available on the @Desmos graphing calculator
Curriculum Tags: All

https://twitter.com/Desmos/status/1333921570914508801

✨ GLOW UP YOUR GRAPHS ✨

🎁 New colors!
🎁 New styles!
🎁 New editor!

Click and hold down on any graphed expression to start styling!https://t.co/aPyN7BofNX pic.twitter.com/uYQ4DqCQ8h

— Desmos.com (@Desmos) December 1, 2020

In my school, the game Among Us is super popular. So this Desmos activity from @Kurt_Salisbury takes that and Desmosifies it (with about a thousand lines of code). In it students "play" Among Us and solve some mathematical challenges with points, slope and solving equations. Very cool. 
Curriculum Tags: MPM1D, MFM1P
https://twitter.com/kurt_salisbury/status/1334263146685534209

Shhhhhh! @AlgebraDesmos #mtbos #iteachmath #retrodesmos 🕹🕹 🕹

Check out this @Desmos activity: Equations Among Us!! https://t.co/I3fHZPxiW5

— Kurt Salisbury (@kurt_salisbury) December 2, 2020

Here's a cool webinar on snowflake art and symmetry from @Stecks. If you have ever seen her work, it's pretty cool. Check out her @numberphile video on creating letters with a single cut. Just make a donation and check it out. Thanks to @KMarkPet for pointing this one out
Curriculum Tags: All
https://www.eventbrite.co.uk/e/snowflakes-symmetry-maths-art-workshop-18-tickets-128649428905

Video/Audio Links

Yup, I agree - Zeno's Paradox
Curriculum Tags: MCV4U
https://twitter.com/bobloch/status/1332681130865254400

Zeno's Paradox in the wild. https://t.co/vKqva8c22Q

— Bob Lochel (@bobloch) November 28, 2020

I had a great talk with Ian VanderBurgh in this month's @OAMEtalks podcast. He's doing his OAME members only webinar on "Adventures in Problem Solving" We talked about that and other things like the creation process of the @CEMC_Waterloo math contests. 
Curriculum Tags: All
https://talks.oame.on.ca/season-3

Image Links

Why didn't I think of this for trig identities?
Curriculum Tags: MHF4U, MCR3U
https://twitter.com/panlepan/status/1334948834837934080

Isn't that cute ? pic.twitter.com/H1Dwq9haYz

— Vincent Pantal🍩ni (@panlepan) December 4, 2020

    

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

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

Math Links for Week Ending Oct. 2nd, 2020

Featured Links

It's now time for me to shamelessly plug the podcast that I do. This is the third year that I have taken speakers from the OAME conference and interviewed them about their sessions and it is still not at all like work. This season we have @PeterTaylor&@Pi_Lab, Ian VanderBurgh, @TaraCFlynn&@ShelleyYearley, @RooSloan and starting off this month we have Ron Lancaster talking about his session "A Shared Problem Solving Activity". On the podcast episode he doesn't divulge the activity he's going to do but did a similar type of activity that has a low floor and high ceiling with a surprising result. You can register for his webinar at our @OAMEtalks website
Curriculum Tags: All
https://talks.oame.on.ca/season-3

Resource Links

And speaking of @ShelleyYearley, she reminded us that the Ontario Fraction Pathway website is up and running again. This is a great resource for anyone looking to conceptualize fractions for their students. 
Curriculum Tags: Gr7, Gr8
https://fractionslearningpathways.ca/

Just want to let everyone know that https://t.co/HJcIF3CP9M is back on-line. Thanks @uptergroveGreg and Chris for the prompt attention to the broken link. #fractionsteaching

— Shelley Yearley (@ShelleyYearley) September 30, 2020

It's pretty cool to have a look at the origins of Calculus

Curriculum Tags: MCV4U

https://archive.org/details/methodfluxionsb00stongoog/page/n5/mode/2up

Here is a translation of l'Hospital's original book on calculus. https://t.co/xp4CADkFiO The French version is online too.

— math prof (@mathematicsprof) September 26, 2020

Video Links

Not a podcast but a video series. They are out soon. Sign up to get updates

Curriculum Tags: All
https://go.info.amplify.com/math-teacher-lounge

Math Teacher Lounge is a video series designed for K–12 educators. Hosts Bethany Lockhart Johnson (@lockhartedu) & Dan Meyer (@ddmeyer) will dig deep on topics you care about & feature guests you need to know about. Visit https://t.co/cKBZD04Tqo to sign up for the first episode! pic.twitter.com/cVsUUyEeZL

— Math Teacher Lounge (@MTLShow) September 30, 2020

Very cool tiling of non repeating patterns with darts and kites from @Veritasium
Curriculum Tags: All
https://www.youtube.com/watch?v=48sCx-wBs34

Image Links

I thought this was an interesting visualization of data. Be sure to go to the second image for the reveal 
Curriculum Tags: MDM4U
https://www.instagram.com/p/CFh6Uu1Fpn8/ 

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If there is no justice for Breonna Taylor, there is no justice for Black women. If there is no justice for Black women, there is no justice for women. If there is no justice for women, there is no justice. 72 deaths sourced by mappingpoliceviolence.org

A post shared by Mona Chalabi (@monachalabi) on Sep 24, 2020 at 11:47am PDT