Math Links for Week Ending Oct. 1st, 2021

Featured Links

Join the conversation that @JRappaport27 started and answer, in exactly 5 words, what math is about
Curriculum Tags: All
https://twitter.com/JRappaport27/status/1443904365069230080

In five words, what is a mathematics education about? It doesn't have to be a sentence, just use five words. @Math4HF @ShelbiCole1 @mathcoachrivera @_CrystalMWatson @MarkChubb3 @shskaercher @KirstDy @NolanFossum @Sneffleupagus @HKhodai @MrSoclassroom @davidpetro314 @ddmeyer pic.twitter.com/S5eExCpoTE

— Jordan Rappaport (@JRappaport27) October 1, 2021

Resource Links

"This activity was exhilarating for me as well as the students" - that was @AlexOverwijk talking about a, (relatively) straightforward activity where students start with some fractions and have to extend the pattern and then connect the fractions to Pythagorean theorem. The end result is some "unexpected beauty" 
Curriculum Tags: MTH1W, MPM2D, MFM2P, MBF3C
http://slamdunkmath.blogspot.com/2021/09/unexpected-beauty.html

This might be new for grade 9 teachers but @MSBJacobs reminds us that it doesn't take much planning to do a good number talk, just some thought out questions. Here he does a progression of percent questions that help students hone their mental math skills. I have a draft Desmos activity that kinda does the same thing here. 
Curriculum Tags: Gr8, MTH1W
http://themathguy.blogspot.com/2021/09/number-talks-in-grade-9.html

Audio Links

We haven't always had zero in our number line. Learn about the history of zero with @OnlineKine on @AllusionistShow podcast. 
Curriculum Tags: All

https://www.theallusionist.org/allusionist/zero



On this month's episode of @OAMEtalks we're talking about coding in the intermediate classroom with @LisaAnneFloyd
Curriculum Tags: All

https://talks.oame.on.ca/season-4

Image Links

What do you notice? What do you wonder?
Curriculum Tags: All
https://twitter.com/MathInTheNews/status/1442652456358350850

Found an old box of staples in the supply room. The numbers on it have bothered me all day. pic.twitter.com/yXxuxnrdVb

— Math In The News (@MathInTheNews) September 28, 2021

Football season has started. How did your team do last year? The Lions didn't do so well out here. 
Curriculum Tags: MDM4U
https://twitter.com/DataIsBeautiful/status/1442912003173933056

[OC] Frequency of NFL team total wins after starting the season 0-3 https://t.co/gl81G3LITt #dataviz

— r/DataIsBeautiful (@DataIsBeautiful) September 28, 2021

      

Math Links for Week Ending Sept 24th, 2021

Featured Links

Check out this webinar on traditional Indigenous mathematics
Curriculum Tags: All
https://www.youtube.com/watch?v=P6htwS5Mv8E

What is traditional Indigenous mathematics? Find out on Sept 22 at 2 pm from @BryanPrettyLeaf, Anishinaabe of Nipissing First Nation. Tune in to understand the importance of land-based learning. Perfect for grades 1-6 👉 https://t.co/QTc7P6ebo6 pic.twitter.com/0BX8FjiX9a

— Ontario Science Centre (@OntScienceCtr) September 20, 2021

Resource Links

Polar Coordinate Battleship? Nice. Thanks @dment37
Curriculum Tags: MCV4U
https://www.geogebra.org/m/gzzp5whu

Today precalc ss at #WeAreChappaqua got to #MathPlay with polar coordinates via @geogebra battleship. Thank you @PontecorvoRob for the training on Geogebra classroom and @dment37 for this fun applet🙂#MTBoS #ITeachMath #MathisFun #Maths #MathChat #MathRocks #MathTeacher #EdTech pic.twitter.com/nyoxGgjm4e

— Libo Valencia (@MrValencia24) September 17, 2021

A nice activity that connects fractions and probability
Curriculum Tags: Gr7, Gr8, MTH1W
https://mathigon.org/task/fraction-bingo

Fraction Bingo with Polypad by @MathigonOrg. Roll the dice to create the fraction. Cover the matching description square(s). Be the first one to cover the entire Bingo card. #mtbos #iteachmath #fractions https://t.co/4rG8jKPEhU pic.twitter.com/nKMV48NXbV

— Eda Aydemir (@edaydemir) September 19, 2021

Video Links

Double Factorial? Who knew that was a thing?
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1439260072471789569

New TikTok video: How many arrangements? (Featuring double factorials!!) pic.twitter.com/7tFDsJhFPS

— Howie Hua (@howie_hua) September 18, 2021

It's always good to remind students that lot's of people love math (or in this case, maths)
Curriculum Tags: All

https://twitter.com/ddmeyer/status/1440699795857760261

US Open champ @EmmaRaducanu: "My favourite subject was maths by far ... "

Math teachers deserve this clip rn. 🎾 👑 #iteachmath https://t.co/EGEvxVwHcJ

— Dan Meyer (@ddmeyer) September 22, 2021

The more interesting fraction facts you can exploit, the more you can get kids into manipulating fractions

Curriculum Tags: Gr7, Gr8, MTH1W

https://twitter.com/howie_hua/status/1439700014859644929

New TikTok video: A fun fraction fact pic.twitter.com/5thwJp6u7g

— Howie Hua (@howie_hua) September 19, 2021

Image Links

Pythagorean Theorem for the thinking classroom anyone?
Curriculum Tags: Gr8, MTH1W
https://twitter.com/pgliljedahl/status/1439340498783596544

1. Do you notice a pattern?
2. Can you extend it?
3. Can you generalize it?
4. Can you prove it?
5. Did you learn anything new?#thinkingclassroom #flow pic.twitter.com/2OklCMYbOl

— Peter Liljedahl (@pgliljedahl) September 18, 2021

A groaner, for sure
Curriculum Tags: Gr8
https://twitter.com/howie_hua/status/1439015728363884551

I made complimentary angles pic.twitter.com/cclZIF9EyQ

— Howie Hua (@howie_hua) September 17, 2021

    

Math Links for Week Ending Sept 17th, 2021

Featured Links

More and more resources are coming out for the new Grade 9 Destreamed course and I love that everyone is sharing. This time it's a website from @WRDSB. Thanks to @MaryBourassa for pointing this one out
Curriculum Tags: MTH1W
https://sites.google.com/wrdsb.ca/mth1w/home

Resource Links

Here's a great activity for fractions (you could probably pick just about any fraction topic and connect it to this). Thanks to @normabgordon for creating it
Curriculum Tags: Gr7, G8, MTH1W
https://mathigon.org/polypad/KXAW2SBYIocOCQ

Someone put the Unusual Baker problem (NCTM, BTC) on Mathigon. Thank you! (I wish I could give you credit.) Cake #7 doesn't look the exactly the same as in @pgliljedahl's book (Figure 10.1), but I like that it is going to the midpoints. https://t.co/xF1qJ5r3Z9

— Mary Bourassa (@MaryBourassa) September 15, 2021

Video Links

My favourite thing about this video is that with a typical solution you might hear a phrase like "cross multiply" but here @Howie_Hua uses one of my favourite properties - so good. 
Curriculum Tags: Gr8, MTH1W
https://twitter.com/howie_hua/status/1438656077973778432

New TikTok video: How fast do you need to drive? pic.twitter.com/UG0RDo3ig7

— Howie Hua (@howie_hua) September 17, 2021

I think you could easily connect this multiplication (and division) strategy to binary.
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/howie_hua/status/1437934339707207680

New TikTok video: Egyptian multiplication and division pic.twitter.com/CeupnO80ia

— Howie Hua (@howie_hua) September 15, 2021

Image Links

I don't even like this band and probably couldn't identify one of these songs but I still got this
Curriculum Tags: 
https://twitter.com/howie_hua/status/1437926675501641729

Only one person in my upper division college classes knew who this group was. It made me feel old lol pic.twitter.com/0EV5ytl3jZ

— Howie Hua (@howie_hua) September 14, 2021

Talking about scatterplots or correlation? Check out this graph:
Curriculum Tags: Gr8, MTH1W, MDM4U
https://twitter.com/simongerman600/status/1438565863540539393 

Brain size vs body weight of various animals. We humans (I assume you aren't a water opossum) are a positive outlier. So are foxes, apes, and dolphins. Source: https://t.co/Jtj9pgyf5N pic.twitter.com/zUW0mNBKAi

— Simon Kuestenmacher (@simongerman600) September 16, 2021

Math Links for Week Ending Sept. 10, 2021

Featured Links

I have been a fan of the Mathies.ca math apps for years and was disappointed when they went away when Flash went away. But some money has been found and some of them have been recreated in HTML5 so that they will live on. Currently, the Money app and the Colour Tiles app have been released with others on the way (some of the other minor apps are also in HTML5). 
https://mathies.ca/apps.php#gsc.tab=0

HTML5 version of #ONmathies #MoneyTool just released! Works in all modern browsers on any device! https://t.co/RGPU8IEWAp Thanks to @OAMEcounts and @afemo_on_ca #FractionStrips are next! pic.twitter.com/SGcK6qVPCi

— mathies.ca (@ONmathies) August 31, 2021

First new #ONmathies development in 2 years! HTML5 version of #ColourTiles and an overhaul of the https://t.co/Zm51s7dQhX website. Works in all modern browsers on any device! https://t.co/2oUUVBNy7m pic.twitter.com/RiKvtmsfpC

— mathies.ca (@ONmathies) July 21, 2021

Resource Links

If you are interested in learning about destreaming math then you should watch @Jason_To's webinar below. One of the things that came out of this webinar was this interactive destreaming choice board.
Curriculum Tags: MTH1W
https://bit.ly/destreamingchoiceboard

Watching @Jason_To's @OAMEtalks webinar on Destreaming #Math. I like this #Choiceboard with all kinds of places for you to go on the topic (not just in the math area):https://t.co/izhZBVBzKX#Edchat pic.twitter.com/DWxcGDVHeP

— David Petro (@davidpetro314) September 9, 2021

Video/Audio Links

If you are interested in Destreaming/Detracking math then check out @Jason_To's webinar on the topic. Click on the link to watch the full webinar. 
Curriculum Tags: MTH1W
https://oame.on.ca/main/index.php?p&lang=en&code=video&ph=4157

We started a new feature on the @OAMEtalk podcast. In this episode, we have a companion podcast to the new OAME Gazette column Coding in the Classroom. This features @IainBro and Beyza Sezer interviewing @PekkaReinio on how he uses coding in his school
Curriculum Tags: All
https://talks.oame.on.ca/season-4

Image Links

Useful geometry formulas for the trignometry heads out there. 
Curriculum Tags: MCR3U, MHF4U
https://xkcd.com/2509/

    

Math Links for Week Ending Sept. 3rd, 2021

Featured Links

It's the new season of OAMEtalks and we are starting this season with @Jason_To giving us a preview of his webinar "Destreaming Math: Equity, Practice, and Politics". Listen to this podcast preview and then sign up for the free webinar open to all teachers. The webinar is on Wednesday at 8pm the 8th of September. More info at the link below or register here. 
Curriculum tags: MTH1W
https://talks.oame.on.ca/season-4

Resource Links

Getting caught up on a few posts from the summer from @MathisVisual. Be sure to check the links for the full descriptions. The videos are a good start but they walk you through the pedagogy in each of the weblinks. Some work on ratios here
Curriculum Tags: Gr7, Gr8, MTH1W
https://mathisvisual.com/scaling-in-tandem/
https://mathisvisual.com/scale-factors/
https://mathisvisual.com/one-step-equations-partitive-division/

Video Links

We were just talking about this very thing at my school. The idea that math is more about choosing the most appropriate method, not just the standard algorithm.
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1433234421998555143

New TikTok video: Standard algorithms vs Other ways of thinking pic.twitter.com/arBEVDXX7v

— Howie Hua (@howie_hua) September 2, 2021

This is mesmerizing.

Curriculum Tags: All

https://twitter.com/smjtyazdi/status/1433330002599231488

🌀 Spherical Spiral Vs. Spherical Spiral 🌀#creativecoding #raymarching pic.twitter.com/isYR1uBOPg

— Javad Taba (@smjtyazdi) September 2, 2021

Image Links

Truth. We are all math people.
Curriculum Tags: All
https://twitter.com/howie_hua/status/1433228323555926021

Find your zodiac sign to see if you are a math person. You know these things don't lie. pic.twitter.com/cLF4xcnL5p

— Howie Hua (@howie_hua) September 2, 2021

    

Math Links for Week Ending Aug. 27th, 2021

Featured Links

If you haven't looked at the dynamic stuff that @TimBrzezinski does with both @Geogebra and @Desmos then you are missing out. Put him on your follow list. Here is some stuff with radian measure. 
Curriculum Tags: MHF4U
https://twitter.com/TimBrzezinski/status/1430917072003821570
https://twitter.com/TimBrzezinski/status/1430842069342380032

Constructing angles given radian measure: Quick formative assessment with conceptual insight: https://t.co/sLZLjaLSMF & https://t.co/EFWuzMSOQ2 @geogebra #MTBoS #ITeachMath #math #geometry pic.twitter.com/lnrRB1dPK9

— Tim Brzezinski (@TimBrzezinski) August 26, 2021

Coffee ☕️ + @Desmos 🙂 this AM = https://t.co/gPEoUdMagc. Also added to https://t.co/14l4ROTQpn. @AlgebraDesmos @madewithDesmos #algebra #trig #math #mathchat pic.twitter.com/YvXfcypruk

— Tim Brzezinski (@TimBrzezinski) August 26, 2021

Resource Links
Do you want some resources for the new Ontario Gr9 Math course. This resource might be the thing for you. So much to choose from from many strands and many modes.

Curriculum Tags: MTH1W

https://docs.google.com/document/d/1OEYPyvOhatVwzFsFIWygVH3nYzia8uCU8IDHJHGBSbo/edit

Proud to share the #MTH1W resources from @HPEschools summer writing project. Includes:

** SPIRALLED PLAN
** DESMOS ACTIVITIES
** CODING ACTIVITIES
** FINANCIAL LITERACY UNIT

HUGE thanks to the 20 secondary teachers who put this together! #onted #MTBoShttps://t.co/amXUr9EhaW

— Rob Garden (@garden_rob) August 23, 2021

Article Links

An older article about logarithms from @StevenStrogatz but still good 
Curriculum Tags: MHF4U
https://opinionator.blogs.nytimes.com/2010/03/28/power-tools/

'Logarithms? You Understood Those?' For my companion article to this little joke, and for more about logarithms and other functions, see: https://t.co/y8F8mMrivQ https://t.co/hIqKSjFKkw

— Steven Strogatz (@stevenstrogatz) August 21, 2021

Video Links

I love a good infinite proof video. I think students of all ages should see something like this
Curriculum Tags: All
https://twitter.com/howie_hua/status/1431045772972150784

New TikTok video: Proving there are an infinite amount of prime numbers pic.twitter.com/AZPYsUjvnk

— Howie Hua (@howie_hua) August 27, 2021

Image Links

Are you doing any sort of number pattern work with numbers? Then this is a neat question.
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/howie_hua/status/1430722198201769985

Our first mathematical task is using patterns to solve problems. This is my favorite pattern to talk about. Where will 1,000 be in this grid?

(Source: Tony Cotton's "Teaching for Mathematical Understanding") pic.twitter.com/zqrooAm4Ii

— Howie Hua (@howie_hua) August 26, 2021

Math Links for Week Ending Aug. 20th, 2021

Featured Links

Lots of stuff this week to support the newly released Grade 9 Math curriculum. Firstly a new (to me) resource BHNMath that has all sorts of resources for Ontario secondary school students, parents and teachers. For example, there are a lot of references to story telling in the new grade 9 curriculum and so here is a resource for topic ideas for those expectations. Thanks to @RobinMath3 for pointing this resource out. 
Curriculum Tags:All
https://www.bhnmath.ca/teachers/courses/mth1w1/tell-a-story/

I've begun creating a list of some "Tell a Story" topic ideas for #MTH1W. I'll keep adding topics as I think of them. Suggestions are very welcome! The more cultures/contexts, the better!https://t.co/161ZQOPOtn pic.twitter.com/gEmnXIOIci

— Adam Gesjorskyj (@AGesjorskyj) August 18, 2021

Resource Links

It seems that @HTheijsmeijer has been working hard coming up with resources for specific expectations for the new Grade 9 course connecting to the cultural context and she's sharing them and asking for feedback to make them better. Check them out here
Curriculum Tags: MTH1W
Golden Ratio: https://docs.google.com/document/d/1WoAlTL-c2UZmAV_wID1S4e8oP4N5rYkNiZOKoMULh24/edit
Right Angled Triangles: https://docs.google.com/document/d/1o-XrQIBcwlSpBUORoB-AtEKy7LSGljv36wrdH6TO6vg/edit
Number Systems: https://docs.google.com/document/d/1Ja6uzkfJFhb8N34BdA0YYn_k1kHiFWLFmo7Eh2Fgq9k/edit

Another teacher resource for #MTH1W - this time for the Golden Ratio in various cultures, which could fit well with B1.3 (use patterns and number relationships to explain density/infinity/limit...)

Again, suggestions/additions more than welcome!https://t.co/FReaIEgEDW

— Heather Theijsmeijer (@HTheijsmeijer) August 19, 2021

Put this together this afternoon as a #MTH1W resource. Suggestions/additions welcome!

Right triangle side relationship resources (alternative backgrounds to the "Pythagorean Theorem"):https://t.co/8b494MCoof

— Heather Theijsmeijer (@HTheijsmeijer) August 18, 2021

One more #MTH1W resource, this one for B1.1 (...number concept to tell a story about its development and use in a specific culture...).

I definitely need help filling this one out - suggestions/additions welcome!

Counting Systems from Around the World:https://t.co/JwEhdfPLS4

— Heather Theijsmeijer (@HTheijsmeijer) August 20, 2021

I've mentioned this coding resource specific to Grade 9 Math before. Now all the weekly challenges are there. So check them out. 
Curriculum Tags: MTH1W
https://sites.google.com/apps.hpedsb.on.ca/codingchallenge/home

The 8th (and final) #mth1wCodingChallenge is posted. This week's focus is creating animations in Scratch to tell stories. Great for the SEL and story telling expectations.

Thanks to all those who joined. All the best with #mth1w!
https://t.co/4a6JMoHdOf

— Dave Lanovaz (@DaveLanovaz) August 16, 2021

Here's a great @OpenMiddle interactive for sum of angles in a triangle
Curriculum Tags: Gr8, MTH1W

https://twitter.com/TimBrzezinski/status/1427639764119924742

Wondering if this @openmiddle problem by @aa_henderson can help Ss discover the relationship FIRST vs. being a problem to work through afterwards. 🤔 With 192 unique solutions, I’m hoping “yes”. 🙂 https://t.co/N6KQgOSR0u @geogebra @robertkaplinsky #MTBoS #ITeachMath #mathchat pic.twitter.com/eUyHhOz4Z5

— Tim Brzezinski (@TimBrzezinski) August 17, 2021

And speaking of @OpenMiddle, here's another for graphing. 
Curriculum Tags: Gr7, Gr8

https://twitter.com/robertkaplinsky/status/1428147213247684609

Looking to challenge your students who are learning about the coordinate plane? Try this @openmiddle problem with them. https://t.co/DF2YVKmcue #iteachmath pic.twitter.com/T22Z2Na8hy

— Robert Kaplinsky (@robertkaplinsky) August 19, 2021

And @NatBanting says that creating interactive resources using @Mathigon isn't terrible. Check this one out for beginning probability. 
Curriculum Tags: Gr7, Gr8
https://mathigon.org/task/ace-in-the-hole

This Summer I tried my hand at building a @MathigonOrg task for their library.https://t.co/8YxoTG14WW

Builder was quick to pick up and @davidporas was there when I needed it!#MTBoS #iteachmath

— Nat Banting (@NatBanting) August 16, 2021

Video/Audio Links

And some more for the new Grade 9 math curriculum it's @Jason_To talking about destreaming and anti-racism.
Curriculum Tags: MTH1W
https://www.cbc.ca/listen/live-radio/1-100-ottawa-morning/clip/15861138-teachers-grade-9-math-curriculum

Thanks to @OttawaMorning and Jodie Hudgin for the bright-and-early convo about destreaming and anti-racism in math learning.

Here's the recording for those that were still in bed: https://t.co/d4Yj9EveE0 https://t.co/lcqDYNaMnN

— Jason To (@Jason_To) August 18, 2021

Need a visual on the sum of a series?  How about this one from @TedG on sums of powers of 3s?
Curriculum Tags: MCR3U
https://www.youtube.com/watch?v=9IAm75UY2U8

And it seems that @Howie_Hua continues to give us great short videos on math topics. This time it's the Birthday Problem. 
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1427798204305743876

New TikTok video: The Birthday Paradox pic.twitter.com/kQcnaGYFRL

— Howie Hua (@howie_hua) August 18, 2021

Image Links

Got some kids who need a mental challenge? Ask them to explain this one dealing with imaginary numbers and everyone's favourite math theorem
Curriculum Tags: MCR3U, MHF4U
https://twitter.com/pickover/status/1428504250867494913

Mathematics.

A Pythagorean triangle visits us from the Twilight Zone, and we shiver in ecstasy. (a² + b² = c²) pic.twitter.com/6Yf5hykeiY

— Cliff Pickover (@pickover) August 19, 2021