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

Math Links for Week Ending Aug. 13th, 2021

Featured Links

I have mentioned GraspableMath before but it's come up in my feed from a few different places so I thought I would mention it again. If it's new to you then check it out, you'll love this dynamic algebra system. If you already know about it then you know what I'm talking about. 
Curriculum Tags: All
https://graspablemath.com/

If you've used Graspable Math for a bit, you probably agree that working with signs could get quite annoying. But no longer! We're so excited to finally introduce dragging of signs 🎉 pic.twitter.com/J1ILccmHGA

— Graspable Math (@GraspableMath) August 12, 2021

Resource Links

Though I think this was meant for math teacher, I think many of the suggestions here could be for any subject area. New or old, I think any teacher could make use of some of these suggestions. 
Curriculum Tags: All
https://www.fawnnguyen.com/teach/dear-new-teachers

Good morning! I wrote a new post: Dear New Teachers https://t.co/VjixKqXhpE

— Fawn Nguyen (@fawnpnguyen) August 8, 2021

Video Links

Nice, @3Blue1Brown interviews @StevenStrogatz
Curriculum Tags:All
https://www.youtube.com/watch?v=SUMLKweFAYk

Some great dynamic geometry animations here:
Curriculum Tags: All
https://twitter.com/MagicPi2/status/1424063460166537223

Area of a Triangle#mtbos #iteachmath #math #Maths pic.twitter.com/iGAgHKh021

— Idan Tal (@MagicPi2) August 7, 2021

https://twitter.com/panlepan/status/1425014879501574161

You might like this hinged dissection I made for the 3:4 pic.twitter.com/APXwYm23FU

— Vincent Pantal🍩ni (@panlepan) August 10, 2021

Image Links

It's the last week of #MathPhoto21. So have fun
Curriculum Tags: All
https://twitter.com/DianeDevine18/status/1425811428066406400

Week 10 starts today with a theme of Math at Play(#mathplay). Thanks, Erik, for asking me to host! #Mathphoto21 pic.twitter.com/UMgNlv4oDN

— Diane Devine (@DianeDevine18) August 12, 2021

    

Math Links for Week Ending Aug. 6th, 2021

Featured Links

Last week I shared a video where @DavidPoras hinted at some new 3D geometry tools and now @Mathigon has released them. They are pretty easy to use (here I made an incomplete and complete net and it was easy)
Curriculum Tags: All
https://mathigon.org/polypad/

Big news: Polypad now supports 3D geometry! 🎉⚽️🎁 Use one of our built-in solids, or create your own net using polygon tiles. Then click “fold” and watch the magic happen… pic.twitter.com/lMeBZbvGSo

— Mathigon (@MathigonOrg) August 2, 2021

Resource Links

I always like hands on activities and especially if it's for statistics. 
Curriculum Tags: MTH1W, MDM4U
https://mathequalslove.net/candy-grab-lab-for-linear-regression/

This Candy Grab Lab is my favorite way to introduce linear regression to my students. Students use their regression equation to determine how many starbursts that various school staff members should be able to pick up. #mtbos #iteachmath #statchathttps://t.co/ikYv9EhFfY pic.twitter.com/GXYjemFddO

— Sarah Carter (@mathequalslove) July 30, 2021

@MathEqualsLove has really been on fire lately with new blog posts
Curriculum Tags: All
https://mathequalslove.net/five-arrows-puzzle/

I can't wait to try this five arrows puzzle with students next week! https://t.co/VhL3hIkbEf #mtbos #iteachmath #puzzlingclassroom pic.twitter.com/OtfN2zgSHZ

— Sarah Carter (@mathequalslove) August 5, 2021

And although this is an old post from her, this is a fun matching activity for your kids
Curriculum Tags: All

https://mathequalslove.net/math-joke-of-the-week-posters/

Oh my goodness. How cute is this bulletin board that @tracy_zalud made with my math joke of the week posters?!?

I love how the answers to the jokes are off the the side in a random order. Brilliant! https://t.co/yD5w2ZmkCP #mtbos #iteachmath pic.twitter.com/emqjxt4Ufw

— Sarah Carter (@mathequalslove) August 6, 2021

Even if you don't directly participate in the #MatchMyCL challenge, you may still want to follow the hashtag to get some good beginning of the year goodies. 
Curriculum Tags: All
https://twitter.com/mrchowmath/status/1422590841286107136

👋love @Desmos ? This #MatchMyCL is for everyone!

It's the start of a new school year! This month, to honor your time and still get some resources shared around, let's share something that's already been created. Share a beginning-of-the-year activity that you enjoy. pic.twitter.com/UnZbiHU03p

— Jay Chow (@mrchowmath) August 3, 2021

Video Links

Some topical probability discussion here
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1421502809862664197

New TikTok video: Doing my part in helping people understand the difference between P(vacc|infected) and P(infected|vacc) pic.twitter.com/WpOTQk87WB

— Howie Hua (@howie_hua) July 31, 2021

Image Links

The second to last week for #MathPhoto21 has the theme of #Compliments
Curriculum Tags: All
https://twitter.com/maths_kath/status/1423226076856082434

#mathphoto21 The theme for Week 9 - which I am so happy to host - is #complement pic.twitter.com/Rh9bJiuSD6

— Dr Katherine Seaton (@maths_kath) August 5, 2021