Math Links for Week Ending Dec 29th, 2023

Featured Links

I've always been a big fan of @RadioLab but especially like when they take on mathematics. You can always count on something off from centre. In this case, the philosophy of dividing by zero featuring @karimkai & @StevenStrogatz. I've added it to my list of #math based podcasts. This and all of the rest can be found at the link
Curriculum Tags: All
https://ontariomath.blogspot.com/p/podcasts.html

Resource Links

It's always great that @MathEqualsLove has created so many of these puzzles for us
Curriculum Tags: All
https://mathequalslove.net/2024-pentomino-puzzle/

I couldn't resist creating one more 2024-themed puzzle to help ring in the new year. Plus it involves pentominoes with a fun twist.

2024 Pentomino Puzzle https://t.co/QgUJD7yPHD #mtbos #iteachmath #teach180 pic.twitter.com/AaLXFLnBc1

— Sarah Carter (@mathequalslove) December 29, 2023

I was reminded of this in my feed and I strongly suggest that you take a look at @DavidKButlerUoA's activity on fractions called quarter the cross. Very low floor and high ceiling. You won't be dissapointed
Curriculum Tags: Gr7, Gr8, MTH1W

https://blogs.adelaide.edu.au/maths-learning/2020/08/25/quarter-the-cross-colouring/

A blog post making it easier to find my Quarter the Cross Colouring template. #QuarterTheCross #mtbos #mathschat https://t.co/cUjJptgSRm pic.twitter.com/VknmWTOyy6

— David Butler (@DavidKButlerUoA) August 24, 2020

Here's another @Desmos snowflake maker
Curriculum Tags: All

https://www.desmos.com/geometry/lpjbpovwjy

It's time to 🎶let it snow🎶. Use Desmos Geometry to craft your own custom snowflake. Drag points, adjust arcs and segments, and watch your wintry formations come to life as your geometric objects get reflected and rotated into a unique creation. https://t.co/e6BMSwVwhD pic.twitter.com/0e2Qbv7ymi

— Desmos (@Desmos) December 22, 2023

Video/Audio Links

When I talk about vectors I always found it useful to have real examples of them in practice. I had never heard of this type of wheel but I totally appreciate the vector diagrams used in their description.
Curriculum Tags: MCV4U
https://www.youtube.com/watch?v=noqBUEgyQ8A

Here's a cool episode about the history of the calculator. And the rest of the math based podcasts can be heard at the link below
Curriculum Tags: All

https://ontariomath.blogspot.com/p/podcasts.html

https://99percentinvisible.org/episode/empire-of-the-sum/

Here's a great application of 3D plotting and vectors
Curriculum Tags: MCV4U

https://www.youtube.com/watch?v=hNcMDoBmhGA

Image Links

If this data doesn't cause a conversation in your class, I don't know what will. Be sure to get the actual data in the comments
Curriculum Tags: MDM4U
https://twitter.com/MonaChalabi/status/1740767114754232703

BBC News has shown a clear bias, giving Israeli victims more coverage and more compassion than Palestinian victims. pic.twitter.com/bUbXAspr9M

— Mona Chalabi (@MonaChalabi) December 29, 2023

Some Pythagorean fun 
Curriculum Tags: Gr8, MTH1W
https://twitter.com/H0H0v/status/1740790545637904521

Find area of the green square pic.twitter.com/qyHFLmCPFi

— KHALID (@H0H0v) December 29, 2023

Some fun(ny) math shirts for you
Curriculum Tags: All

https://twitter.com/Anthony_Bonato/status/1738901814001406202

Math t-shirts funny for the wrong reasons, a thread.

That’s not the graph of the absolute value function. pic.twitter.com/ymusSWVZaP

— Anthony Bonato (@Anthony_Bonato) December 24, 2023

Fun with factorials
Curriculum Tags: MDM4U
https://twitter.com/mehrdadbas72335/status/1738448837231128631

Beautiful question for you...❤️❤️❤️.
Question:
Try to find the value of x?#mathe.#Maths.#Algebra.#Geometry.#Calculus.#ProblemSolving.#test.#Exams.#puzzle.#Science.#evaluation.#solve.#ریاضی.#ریاضیات. pic.twitter.com/gXMF7ZE8rh

— 🎄Mehrdad Basiry🎄 (@mehrdadbas72335) December 23, 2023

    

Math Links for Week Ending Dec. 22nd, 2023

Featured Links

I like when @Howie_Hua shows interesting examples from math class but he also teaches pre service teachers and so I like it when he gives tips about teaching. 
Curriculum Tags: All
https://twitter.com/howie_hua/status/1736390112173535268

Here are two things students appreciated in my math course, along with some of my favorite teacher moves, just in case it helps someone out pic.twitter.com/L0FgxI2QfQ

— Howie Hua (@howie_hua) December 17, 2023

Resource Links

This may be an oldie and Christmas may be over when it comes to school but tuck this away until next year.
Curriculum Tags: All
https://mathequalslove.net/must-share-math-y-christmas-ideas/

Video Links

This animation about the area of a circle never gets old
Curriculum Tags: Gr8
https://twitter.com/TimBrzezinski/status/1736393629785100628

Area of a circle (v2) https://t.co/xKtSvo44d7 pic.twitter.com/oFp5ZfN7G3

— Tim Brzezinski (@TimBrzezinski) December 17, 2023

Image Links

Something great for linear relations
Curriculum Tags: MTH1W
https://twitter.com/H0H0v/status/1736373380322853314

#math pic.twitter.com/6iIWcT2lTQ

— KHALID (@H0H0v) December 17, 2023

This really isn't math but I still think it's relevant in any class
Curriculum Tags: All
https://twitter.com/Rainmaker1973/status/1736381137683972578

Interestingly, our brains construct an incredibly complex jigsaw puzzles using any pieces it can get access to. These are provided by the context in which we see them and by our memories

Reading this may result hard at first, but then...

[read more: https://t.co/m7M9ocryeb] pic.twitter.com/5QWj34wVa2

— Massimo (@Rainmaker1973) December 17, 2023

I remember there was time that I wouldn't get this because I didn't know how to pronounce Euler
Curriculum Tags: All

https://twitter.com/howie_hua/status/1736519469441466863

You've heard of elf on the shelf but have you heard of pic.twitter.com/yNkDLTGxBl

— Howie Hua (@howie_hua) December 17, 2023

Something to use when you are teaching about infinite series
Curriculum Tags: MCR3U, MHF4U

https://twitter.com/mathladyhazel/status/1736829526108217390

This seems true. 😵‍💫 pic.twitter.com/bmmeuP3J6B

— Math Lady Hazel 🇦🇷 (@mathladyhazel) December 18, 2023

    

Math Links for Week Ending Dec 15, 2023

Featured Links

I became a Desmos Fellow in 2018 and it has been a great experience. I have made a lot of great friends and the resources have been great. You should apply to be a Desmos Fellow too and see what I mean.
Curriculum Tags: All
https://twitter.com/desmosclassroom/status/1734647447123623939

📣 Applications are now open for the next cohort of Desmos Classroom Fellows!

Whether you're a Desmos Classroom super user or a teacher eager to leverage Desmos Classroom technology in your classroom, apply now to join our math community: https://t.co/NtPRhypaMR pic.twitter.com/2LyylFe41V

— Desmos Classroom (@desmosclassroom) December 12, 2023

Resource Links

I always love to point out that this site exists, especially when new graphs are added
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U, MAP4C
https://twitter.com/jennalaib/status/1735033701719748870

Added a few #slowrevealgraphs!
- Breadwinners in the US, over the last 50 years
- Pet adoption
- Bullying at school
- Teen reading habits
- swears in Taylor Swift lyrics (@Jhovde2121)
...and maybe a few others that you missed!https://t.co/ozDA6cytjC

— Jenna Laib (@jennalaib) December 13, 2023

Video Links

Some combinatoric probability for you
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1733273306328080880

If you and your friend get called for jury duty with 98 other people, what's the probability both of you will serve on the jury of 12? pic.twitter.com/4ni2sW5pmc

— Howie Hua (@howie_hua) December 8, 2023

If you want a reason to use data, how about finding marathon cheaters
Curriculum Tags: MDM4U
https://www.youtube.com/watch?v=90gLynuxUwg

Image Links

I've said it before, I'm a sucker for square root simplification problems. 
Curriculum Tags: MPM2D
https://twitter.com/H0H0v/status/1733357704964444483

Solve for the problem pic.twitter.com/PbMdNWqhDN

— KHALID (@H0H0v) December 9, 2023

Math humour
Curriculum Tags: All
https://twitter.com/Rainmaker1973/status/1733820884920524811

This requires you to be a nerd, but yet... pic.twitter.com/beHoumdo2v

— Massimo (@Rainmaker1973) December 10, 2023

It would be cool to have this poster but follow the link to some others too
Curriculum Tags: All
https://math.chapman.edu/~jipsen/mathposters/

Most math posters only show approximations of these important numbers. Here are the exact values, if you can read them :-).

"How to print an infinite decimal expansion in a finite space."

By Peter Jipsen, https://t.co/NBh3Nv5NfP, cc by-nc-sa 3.0. pic.twitter.com/DVBxSTED0n

— Cliff Pickover (@pickover) December 10, 2023

Who doesn't like Elf on the Shelf knock offs?
Curriculum Tags: MPM2D, MCR3U, MCF3M, MBF3C
https://twitter.com/howie_hua/status/1734362750036681035   

Okay I made this yesterday and please tell me someone gets this lol

You heard of elf on the shelf but have you heard of... pic.twitter.com/nJpXnLDTA9

— Howie Hua (@howie_hua) December 12, 2023

Math Links for Week Ending Dec 8th, 2023

Featured Links

I agree, in general, with a lot of what's here. There might be some specific bits that I might dispute tho
Curriculum Tags: All
https://twitter.com/TheMathGuru/status/1732419699076477100

Today I spoke to @YourMorning + @metromorning about why kids today have fewer math skills than they did in 2003. Not on the list: “because we need to go back to teaching math the old way.”🙄 Here’s a 3 min summary of what I said: #edutwitter #OECDPISA https://t.co/rl0HE4MdzH

— vanessa vakharia (@TheMathGuru) December 6, 2023

Resource Links

Here are the December questions from the retro set of NCTM problems from @KarenCampe
Curriculum Tags: All
https://twitter.com/KarenCampe/status/1730591314604155160

New blog post! Bring the joy of #ProblemSolving to your math class with this December Calendar of Problems! #MTBoS #iTeachMath #T3Learnshttps://t.co/L0fJL67V8T

— Karen Campe (@KarenCampe) December 1, 2023

A nice probability based warm up activity
Curriculum Tags: MDM4U
https://twitter.com/bobloch/status/1732408071886938476

Today's probability opener - "Paint It Black"...linked below
Hip S: Did you choose this question because you saw a red door and wanted to paint it black?
Me: I guarantee you me and you are the only two in the room who get that reference.
And, I was righthttps://t.co/MlLOg78tCw

— Bob Lochel (@bobloch) December 6, 2023

Although you have to have an NCTM membership to take advantage of these, if you do, they will be a nice addition to your collection

Curriculum Tags: All
https://twitter.com/NCTM/status/1732067600295723389

Run... don't walk... to the December Notice & Wonder lesson plans!

✨ PK-2: Lego Bricks, Calendar, Bicycle
✨ 3-5: Blocks, Calendar, Donuts
✨ 6-8: Paved, Lines
✨ 9-12: Tower, Donuts

Check them out here 👉 https://t.co/XcTMojpLqi pic.twitter.com/PFhQwko98J

— NCTM (@NCTM) December 5, 2023

If you have a 3D printer then you may want to make one of these:
Curriculum Tags:MTH1W
https://twitter.com/KeishiroUeki/status/1732339370374611017

Uploaded to Printables :)

Centroid finder print-in-place by Keishiro Ueki https://t.co/SkxxVGxKr1 (via @printablescom) pic.twitter.com/QZOfl3Z4V1

— 上木 敬士郎 / Keishiro Ueki (@KeishiroUeki) December 6, 2023

I like the idea of starting out with more successes than failures

Curriculum Tags: All

https://twitter.com/MathforLove/status/1539718367820451841

One thing I've come to on this topic is that it's really about the balance of success and challenge. And you want to start out with more success than challenge, especially for students who don't see themselves as successful in a field. Initial success fuels perseverance.

— Dan Finkel (@MathforLove) June 22, 2022

Video/Audio Links

This might not be as obvious as you think but it's worth exploring
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1730739180957749559

New TikTok video: Did you know you can divide across fractions? pic.twitter.com/GxuPvak387

— Howie Hua (@howie_hua) December 2, 2023

We've got a new episode of the OAMEtalks podcast
Curriculum Tags: All
https://talks.oame.on.ca/season-6

[New Podcast] This episode features @JRappaport27 & @ElliWeisdorf previewing their Dec 13th @OAMEcounts
webinar "Supporting Access and Inclusion for Students with Special Education Needs". More info: https://t.co/ggtiNsHUrG #mathchat #MTBoS #iTeachMath pic.twitter.com/CxN48tWUFV

— OAMEtalks (@OAMEtalks) December 3, 2023

Image Links

What do you say to students who's solutions don't look like you expect?
Curriculum Tags: All
https://twitter.com/jennalaib/status/1733130744615100684

👀
Today, in grade 4…@mburnsmath @MathMinds @Inv3_Math pic.twitter.com/ANUY829N2i

— Jenna Laib (@jennalaib) December 8, 2023

    

Math Links for Week Ending Dec 1st, 2023

Featured Links

Make sure you try the puzzles in the new puzzle calendar
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1729153208050733395

Our 2023 puzzle calendar in starting in a few days! Warm up by working on this puzzle. Only one of these statements is true. Can you figure out which one? View all past puzzles at https://t.co/qNnNHDXfo2 pic.twitter.com/MtN31ivZg9

— Mathigon (@MathigonOrg) November 27, 2023

Resource Links

Take an interactive and turn it into a thin sliced activity and this is what you might get.
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/TimBrzezinski/status/1729490105990033815

This interactive, created by @MathTechCoach, is one of @geogebra's most popular resources.

Here, a thin slice activity (7 slices) through which Ss use this very interactive to discover & make conceptual sense of the Pythagorean Theorem: https://t.co/vIjfE8aNbV @pgliljedahl pic.twitter.com/imoYXHr0Bx

— Tim Brzezinski (@TimBrzezinski) November 28, 2023

A nice progression from a visual pattern to a linear equation
Curriculum Tags: G8, MTH1W
https://twitter.com/Shep_MT_math/status/1729907719706947690

I put this activity together using @fawnpnguyen Visual Patterns website and @desmosclassroom . I think I have too much packed on screen 5. Any suggestions on how to fix this? #iteachmath #mtbos https://t.co/Xsl6lFFCzf

— Kurt Shepherd (@Shep_MT_math) November 29, 2023

This is a neat little problem
Curriculum Tags: MCR3U, MCF3M
https://twitter.com/dment37/status/1730179840060379584

Roots of teeth: finding a square root geometrically
Visualization |Animation |Interactive applet |@geogebrahttps://t.co/s8R8SUoBzg#geogebra #math #science #iteachmath #mtbos #visualization #elearning @geometry @bancoche pic.twitter.com/u0hbWOAw2B

— Daniel Mentrard (@dment37) November 30, 2023

Video Links

I used to love doing these when we were playing with uses of algebra and also loved the discussion that typeically followed.
Curriculum Tags: MTH1W, MPM2D, MCR3U
https://twitter.com/howie_hua/status/1730002548218798545

3 arguments for why 0.999...=1 pic.twitter.com/cOqsfeLp7z

— Howie Hua (@howie_hua) November 29, 2023

Something to remember when you teach kids that struggle
Curriculum Tags: All
https://twitter.com/_CrystalMWatson/status/1729560787973529929

https://publish.twitter.com/?query=https%3A%2F%2Ftwitter.com%2F_CrystalMWatson%2Fstatus%2F1729560787973529929&widget=Tweet

Image Links

There are definitely some math question you can ask about this (or do a notice and Wonder)
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/bowenkerins/status/1729238166920716680

What ranges of money are stupid to spend? pic.twitter.com/93CpIxRByO

— Bowen Kerins 🔗 (@bowenkerins) November 27, 2023

I think this would be good to do when you are teaching Integers as an application of using them
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/blatherwick_sam/status/1729593336766333133

Did this with Year 7 and blew their minds... told them they could start from the left because we didn't need to borrow anymore... consternation!! So exciting to do something new in a framework they are so familiar with pic.twitter.com/mbO2KaLSmb

— Sam Blatherwick (@blatherwick_sam) November 28, 2023

Math Links for Week Ending Nov 24th, 2023

Featured Links

There is not quite 180 there yet but well on the way. Lots of familiar names and resources in this list already
Curriculum Tags: All
https://docs.google.com/presentation/d/1AsFjq7pHfv8JroxeN1XN6gelgUjhWtVWpFneFwnSoic/edit#slide=id.g25e0ab12eca_0_206

Update: "180 Days of Math Tasks" is my collection of curated math tasks from resources around the web - organized on a Google Slides deck. I just completed task #100 - so only 80 more to go! Thank you to all of these incredible math websites. Find it here: https://t.co/BAJO38ERLi

— Dan Shuster (@DanShuster) November 21, 2023

Resource Links

I have always liked @JoelBezaire's Story Time Math Desmos activities too
Curriculum Tags: Gr8, MTH1W
https://twitter.com/TheErickLee/status/1726672986806386727

A storm was brewing over the weekend and I needed batteries for my flashlight... next thing you know I had a @desmosclassrom unit price adventure on my hands. A mostly true story in the style of a @joelbezaire "Storytime" activity. #ITeachMath https://t.co/EYsYZUSfJR pic.twitter.com/5cZedylh3X

— Erick Lee HRCE Math (@TheErickLee) November 20, 2023

Hey, time to make your Desmos musical instruments
Curriculum Tags: All
https://twitter.com/MrCorleyMath/status/1725506673698103323

@desmos snuck in a new feature (TONE) in their recent post about the next GLOBAL MATH ART CONTEST. Check out more about TONE here:https://t.co/YUGtNoaY77#iteachmath

— Nick Corley (@MrCorleyMath) November 17, 2023

The folks at @Desmos have been pretty busy adding new features left and right
Curriculum Tags: All

https://twitter.com/desmosclassroom/status/1726630422921322829

📣 Feature update: You can now copy + paste individual components in Activity Builder.

Long gone are the days of copying + pasting screens, just for one component.

Click on the Copy button in the top menu bar of any component. Then paste it into any screen in any activity. pic.twitter.com/3Bq03B60vd

— Desmos Classroom (@desmosclassroom) November 20, 2023

Video Links

I remember the first time I saw this and had such an aha moment
Curriculum Tags: MPM2D, MFM2P
https://twitter.com/howie_hua/status/1725661734650904581

It took me a while to realize that "completing the square" *literally* means to complete the square. Here's what I mean: pic.twitter.com/oKbB7PST3l

— Howie Hua (@howie_hua) November 17, 2023

Connecting visuals to the dot product of two vectors
Curriculum Tags: MCV4U
https://twitter.com/TimBrzezinski/status/1725582727104110787

Here, a #ThinSlice discovery lesson where Ss actively explore geometric insight of the dot product of 2 vectors: https://t.co/2jMdjpnLJQ @geogebra @pgliljedahl #MTBoS #ITeachMath #ThinkingClassroom pic.twitter.com/W2isc6zii3

— Tim Brzezinski (@TimBrzezinski) November 17, 2023

Image Links

Whenever I see this type of problem I think it is perfect to have some great problem solving sessions in a math class of any level.
Curriculum Tags: All
https://twitter.com/edsouthall/status/1726185889255096495

🤔 pic.twitter.com/Xdv0W6Su2E

— Ed Southall (@edsouthall.bsky.social) (@edsouthall) November 19, 2023    

Math Links for Week Ending Nov 17th, 2023

Featured Links

It's back, the @Desmos Global Math Art Contest is here
Curriculum Tags: All
https://blog.desmos.com/articles/art-contest-launch-2023/

The Desmos Global Math Art Contest is here! Have a graph that you’re proud of? We’d love to see it.

Submissions open December 1st. Learn more at https://t.co/GfWV1iuaSF. pic.twitter.com/CHl6shkAIW

— Desmos (@Desmos) November 17, 2023

Resource Links

Makes sense for both students and bots
Curriculum Tags: All
https://arxiv.org/pdf/2302.13814.pdf

When #ChatGPT didn't show its work on a math word problem, it got it wrong 84% of the time. When it showed its work, it improved and only got it wrong 20% of the time. Show your work, kids! It's important! #mtbos #mathedhttps://t.co/r3MZpHTBz7

— Cal Armstrong (@sig225) November 12, 2023

Video Links

Someone didn't do enough math before making this deal
Curriculum Tags: MCR3U
https://www.youtube.com/watch?v=4l16zI0sYRs

Image Links

I feel like this would be good to give that smart kids who is bored in your class
Curriculum Tags: All
https://twitter.com/jamestanton/status/1723272855352476052

An equilateral triangle can be subdivided into 2 and into 4 congruent pieces. Divide it into 3 congruent pieces.

Is it possible to divide it in to 5 congruent pieces? 6? 7?
For which N can an equilateral triangle be so subdivided? pic.twitter.com/Kb3JXJyqwl

— James Tanton (@jamestanton) November 11, 2023

Math Links for Week Ending Nov 10th, 2023

Featured Links

I did a thing. There is definitely a math problem here in the stats. 
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1723504032830959734

Completed my cross Canada (virtual & IRL) cycling challenge today. Over 12536km of distance and 75852m of climbing since Jan 1st. From Yukon to Newfoundland 50 days ahead of schedule.

There is definitely a #math problem in here #MathChat #MTBoS #iTeachMath pic.twitter.com/fLPNtDj4kq

— David Petro (@davidpetro314) November 12, 2023

Resource Links

Fun Math games? Heck yeah
Curriculum Tags: All
https://twitter.com/kathyhen_/status/1720459394109096297

Sometimes my students finish their work early so I wanted to create a doc of fun and appropriate math games/puzzles for them. I’ve been updating this and would love some input on what I might have missed. #mtbos #iteachmath https://t.co/DRMzDGoXk4

— Kathy H (@kathyhen_) November 3, 2023

It's true. When kids have heard this, they come into our classes with a deficit already.
Curriculum Tags: All
https://twitter.com/saravdwerf/status/1720403632703537166

Article: Teachers and Parents: Stop Telling Kids You’re Bad at Math - The math teachers out there are begging you. https://t.co/B1uYtzVf8R

— Sara VanDerWerf (@saravdwerf) November 3, 2023

An Integer Mystery Number activity. Nice
Curriculum Tags: Gr7, Gr8
https://docs.google.com/presentation/d/1HSWbGRnNitPEc7z6HYGxrE568ns_PhElyjIOOz0VlmQ/edit#slide=id.g295e73c8f1e_0_40

I created a Mystery Number Activity for Grade 8 students working on integer operations.
One example and 7 riddles to figure out with their group. If you try it... I'd love some feedback!#iteachmath #HRCEmath #mtbos https://t.co/tMODvYdijh pic.twitter.com/SMldKIIfBG

— JoAnn Sandford HRCE Math (@joann_sandford) November 2, 2023

Another set of classic Calendar problems
Curriculum Tags: All
https://karendcampe.wordpress.com/2023/11/02/november-calendar-problems/

Happy November! Newly posted -- November Calendar of Problems!
Enjoy & please share your working here or on the blog.#ProblemSolving #MTBoS #iTeachMath #MathChat#MathsEdChat #Algebra #Geometry https://t.co/83mD0jC1hX

— Karen Campe (@KarenCampe) November 2, 2023

I love when other teachers post their summaries of stuff they've found. 
Curriculum Tags: All
https://mathhombre.blogspot.com/2023/10/playful-math-carnival-169.html

Links to #playfulmath from @simona_mathmum @PaulaKrieg @tracyjoproffitt @nrichmaths @mathequalslove @fractalkitty @jennalaib @MathTechCoach @DrEugeniaCheng @mathigon @MathforLove @KarenCampe @kassiaowedekind @saravdwerf @MrValencia24 & more https://t.co/TdUnimUtR6

— John Golden (@mathhombre) November 3, 2023

You can count on @DDMeyer to scrape the Internet and give us all the resources from NCTM
Curriculum Tags: All
https://twitter.com/ddmeyer/status/1722732637377515665

Did you miss #NCTMDC23? Or did you attend and can't figure out how to find anyone's slides or handouts? Oh wow check it out they're all right here. 👇https://t.co/pOFtLmD6Ko pic.twitter.com/q9REyWcslP

— Dan Meyer (@ddmeyer) November 9, 2023

You may not like @EQAO but it's always good to have resources
Curriculum Tags: MTH1W
https://twitter.com/eqao/status/1722720873403105555

📚 Unveiling new support resources of released mathematics questions! Our dedicated staff had the pleasure to present the new EQAO mathematics resources to the central math team at @PeelSchools! https://t.co/VNdoBcHExK pic.twitter.com/v3nmNicTfn

— EQAO (@eqao) November 9, 2023

Video Links

Some great stuff here if you are looking for tips when grading in the Thinking Classroom from @TimBrzezinski and @mccainm
Curriculum Tags: All

https://www.youtube.com/watch?v=Fgturm1No2U

Fractals for you
Curriculum Tags: All
https://twitter.com/pickover/status/1721218000638906823

Mathematics, fractals, and beauty.

Creating a Sierpinski Gasket with rotating triangles. Source: https://t.co/NA6c8agb44

By Matt Henderson, @matthen2, used with permission. pic.twitter.com/m21ubA0SIr

— Cliff Pickover (@pickover) November 5, 2023

For anyone who thinks the Imperial measurement system doesn't make sense. Thanks to @SarahVDWerf for this one
Curriculum Tags: All
http://www.metatube.com/en/videos/543852/SNL-Washingtons-Dream/

Image Links

Data in action (or from action)
Curriculum Tags: MDM4U
https://twitter.com/robertkaplinsky/status/1721874975412412601

What do you notice? What do you wonder? pic.twitter.com/iOIosDc6G9

— Robert Kaplinsky (@robertkaplinsky) November 7, 2023

Math Links for Week Ending Nov 3rd, 2023

Featured Links

I love sharing stuff I made and love when people share stuff that they made. And, even more, I love when people take the ideas of others and remix them. In this case, @MathButler was inspired by something I did to create his own version. I think he streamlined what I did along the way.
Curriculum Tags: Gr8
https://teacher.desmos.com/activitybuilder/custom/65400b96e57046e0944748d9

Triangle Congruence exploration with new geometry tool https://t.co/A2cELYWDR7 @desmosclassroom

Lots of credit to @davidpetro314 @MsBeckerMaths @Audra1475 for earlier versions of content. #iteachmath #mtbos #geometry

— Jedidiah (@MathButler) November 1, 2023

Resource Links

There is still time to sign up
Curriculum Tags: All
https://twitter.com/sig225/status/1719097346066133196

@OAMEcounts LEADERSHIP SERIES
A Virtual Event featuring Ilana Horn @tchmathculture
"How Talk of 'Best Practices' Inhibits Teacher Learning
Tuesday, November 14, 2023 6:30-8:30pm ESThttps://t.co/DTYnyVZRVm (new to MCIS? click "I'm a new user")#mathed #onted #mtbos pic.twitter.com/aC3sWxxF8O

— Cal Armstrong (@sig225) October 30, 2023

I'm not sure how I didn't know this existed
Curriculum Tags: All
https://www.mathgameswithbaddrawings.com/games

Awesome! @benorlin has a revived #mathgame site to accompany his great book. Including a daily puzzle! https://t.co/SLKhryajDf

— John Golden (@mathhombre) November 1, 2023

Do you want to have an interesting conversation with your kids? How about talking about what 00 is? There seems to be consensus but there was some debate as well.

Curriculum Tags: All
https://web.archive.org/web/20190114142918/https://mathscitech.org/articles/zero-to-zero-power

Mathematics.

This article caught my eye today: "Why Zero Raised to the Zero Power IS One," by Assad Ebrahim. Link: https://t.co/f6KlGsMiuY pic.twitter.com/DA02rrR4EN

— Cliff Pickover (@pickover) October 31, 2023

I love the interaction with this activity on trig ratios
Curriculum Tags: MPM2D, MFM2P, MCF3M, MBF3C

https://teacher.desmos.com/activitybuilder/custom/5b42f323980e50321b1d4a73

Practicing trigonometric ratios with my favourite @desmosclassroom activity by @KenClarkson3 . Love the virtual measuring and interactive feedback. https://t.co/2N67ZZ8ZkK pic.twitter.com/eOCKcLxOTu

— Erick Lee HRCE Math (@TheErickLee) October 30, 2023

Video Links

I've never been a big fan of "tricks" unless you can talk about the math of how that trick works. In this case, multiplying binomials.
Curriculum Tags: MPM2D, MFM2P
https://twitter.com/howie_hua/status/1719381191751876804

Trick or treat? Have both! A mental "trick" for squaring numbers that end in 5 and why it works pic.twitter.com/HT2yNU6uRW

— Howie Hua (@howie_hua) October 31, 2023

What a fun graph

Curriculum Tags: All

https://www.desmos.com/3d/a335735d5b

Happy Halloween. Hope you have a spooktacular day. 👻🎃

Link to graph: https://t.co/hQHh9sDLM9 pic.twitter.com/KSd4Z7dQ1O

— Desmos (@Desmos) October 31, 2023

Image Links

Can your kids tell which is the better deal?
Curriculum Tags: MTH1W
https://twitter.com/engineers_feed/status/1719441669521809516

Which one is the better deal? pic.twitter.com/o0xbRE5tpC

— World of Engineering (@engineers_feed) October 31, 2023

Math Links for Week Ending Oct 27th, 2023

Featured Links

If you are using any of @pgliljedahl's Thinking Classroom resources then you are probably interested in ways to assess while staying true to the spirit of the Thinking Classroom. If so then you might like @TimBrzezinski's method here (including template). Watch his video and then use the link to get the resources for yourself. 
Curriculum Tags: All
http://tinyurl.com/BTCrubric

Building Thinking Classrooms automated grading rubric: REVAMPED! Special shout out & T/Y to @mccainm for her Google Sheet wizard skills & to @pgliljedahl for giving us invaluable input to help make this resource even better! https://t.co/KTlNjv2okj #MTBoS #ITeachMath pic.twitter.com/yujYdpGSyG

— Tim Brzezinski (@TimBrzezinski) October 23, 2023

Resource Links

I always post fellow "link summarizers'" summaries when I see them :-)
Curriculum Tags: All
https://www.resourceaholic.com/2023/10/5-maths-gems-175.html

New! My 175th gems post. Ideas, updates and resources for maths teachers. 💎https://t.co/NSFwnfjOa8

Hat tips to follow!#mathsgems #mathschat #teammaths #mathstlp #mathscpdchat pic.twitter.com/SG3W2nzlHA

— Jo Morgan (@mathsjem) October 24, 2023

Who doesn't like a good set of problems?
Curriculum Tags: All
https://sites.google.com/site/mathteammatics/home/competition-problems

occasionally people still asking for access to old #mathteammatics items. Been 10 years! https://t.co/7FXO2ARnJI Still fun problems, though. https://t.co/davgXUkaoi @OttenAndrew & Sarah!

— John Golden (@mathhombre) October 26, 2023

A game for Halloween
Curriculum Tags: All
https://mathequalslove.net/ghost-game/

One more new game to share before Halloween next week! This Ghost Game is an adaptation of a paper and pencil game that I found in a 1979 issue of GAMES Magazine. It is a variation of CrossCram. https://t.co/tRd3Uwl4fv #mtbos #iteachmath #teach180 pic.twitter.com/3V0Wwqq6VC

— Sarah Carter (@mathequalslove) October 27, 2023

Video Links

Though induction isn't in the Ontario math curriculum anymore, I still love these kinds of proofs. And it may still be a good thing to add to a grade 11 or 12 class
Curriculum Tags: MCR3U, MHF4U
https://twitter.com/howie_hua/status/1717332044437741691

An example of a proof by induction: How can we show 1+3+5+7+... always equals a square number? pic.twitter.com/Ftf09BUrWf

— Howie Hua (@howie_hua) October 26, 2023

Image Links

Though Canada is not here, I am curious how they decided in which order to put the countries.
Curriculum Tags: MDM4U
https://twitter.com/infobeautiful/status/1717253453544624152

🍕 In a survey of 24 countries, pizza and pasta take the top spot – closely followed by Chinese and Japanese cuisine. #dataviz #heatmap pic.twitter.com/L2tAZlayjC

— Information is Beautiful (@infobeautiful) October 25, 2023

I can't decide if I am horrified by this or love it
Curriculum Tags: All
https://twitter.com/edsouthall/status/1717596294011621576

I asked chat gpt for some nice images of people enjoying doing some maths. Teachers could maybe use them for open evenings or similar. You’re so welcome everyone. pic.twitter.com/KMomjNzKH9

— Ed Southall (@edsouthall) October 26, 2023

Math Links for Week Ending Oct. 20th, 2023

Featured Links

There is still a week to submit entries into this MoMath contest. 
Curriculum Tags: All 
https://momath.org/hatcontest/

Whatever you can imagine making with the famous and mathematically groundbreaking "einstein" tile, submit it for your chance to win $10,000!

The Einstein Mad Hat Awards with @UKMathsTrust invites you submit ANY type of project — food, art, STEM, fashion, etc. — for (1/2) pic.twitter.com/gEfSB9hJyA

— National Museum of Mathematics (@MoMath1) October 16, 2023

Resource Links

It seems the resources are endless on @Mathigon. In this case, piles of puzzles. 
Curriculum Tags: All
https://mathigon.org/puzzles

How many cards, on average, do you have to draw from a standard shuffled deck of 52 cards before you get the first ace? Find more at https://t.co/qNnNHDXfo2 pic.twitter.com/Cj9DL03ULt

— Mathigon (@MathigonOrg) October 18, 2023

Video Links

There aren't many opportunities in the Ontario math curriculum where you need 3D graphing but in the MCV4U curriculum when you have 3D vectors, using the new @Desmos 3D graphing calculator is the way to go. Here's some simple ways to represent vectors and vector operations,
Curriculum Tags: MCV4U
https://www.desmos.com/3d
https://twitter.com/Desmos/status/1714675043752378526
https://twitter.com/Desmos/status/1714718962741563666

Curious how to visualize vectors in 3D? Here, we dive into how to graph a vector, and use built-in functions to identify the individual components of any point or vector. #Unlocking3D🔒 pic.twitter.com/lMava9CS1N

— Desmos (@Desmos) October 18, 2023

Not only can you visualize vectors in Desmos 3D, but also perform vector operations in the expression list. Thanks for joining us as we have been #Unlocking3D🔒, and be sure to visit our Youtube page for all the videos! pic.twitter.com/kUxRtyNf95

— Desmos (@Desmos) October 18, 2023

I think it's cool how they calculated the volume. 
Curriculum Tags: MPM2D, MFM2P
https://youtu.be/a_fTA4UeFls?si=CTLZdYtgGCwrhQ3H

Image Links

I like these types of questions that benefit from a little simplification.
Curriculum Tags: MPM2D, MFM2P
https://twitter.com/sonukg4india/status/1715180896943534252

#morning with #math pic.twitter.com/ITxT1Q3oL8

— SKG (@sonukg4india) October 20, 2023

 

Math Links for Week Ending Oct 13th, 2023

Featured Links

I love that @JennaLaib continues to add more graphs to her Slow Reveal Graph site. Check them all out here:
Curriculum Tags: All
https://slowrevealgraphs.com/

Resource Links

I love the theory behind tessellation. You can get into it with this paper and if you want to play around dynamically I have a @Desmos version and Websketch version you can try
Curriculum Tags: All
https://twitter.com/tessellationfan/status/1712516167447826531

The first in a new series showcasing the work of essentially unknown Escher-like tessellation artists that have a degree of artistic integrity. Fish, by Xun Lin, taken from his 1995 thesis.https://t.co/JyU3FBU7HS pic.twitter.com/Tf8LU8n84G

— David Bailey (@tessellationfan) October 12, 2023

I like how @KarenCampe has tried to summarize major concepts into one big rule for each. There is a lot here that you could bring in on multiple grade levels. 
Curriculum Tags: MTH1W, MPM2D, MCR3U, MCF3M, MBF3C
https://karendcampe.wordpress.com/2023/10/13/one-big-rule-to-rule-them-all/

New blog post: "One Big Rule to Rule Them All"#MTBoS #iTeachMath #T3Learns #MathChathttps://t.co/nfaCvc10oM

— Karen Campe (@KarenCampe) October 13, 2023

Video Links

A simple description of where the permutation and combination formulas come from
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1711899553711132699

Want to understand the permutation and combination formulas? Here's how we can make sense of them! pic.twitter.com/yxs7N6OnQT

— Howie Hua (@howie_hua) October 11, 2023

Image Links

Though I don't know that I like the taunt "you should know this" I do like problems that are simpler than they appear. 
Curriculum Tags: MCR3U
https://twitter.com/sonukg4india/status/1711298791046041911

#Puzzled pic.twitter.com/TkqNcCzApI

— SKG (@sonukg4india) October 9, 2023

More power to ya
Curriculum Tags: MTH1W

https://twitter.com/sonukg4india/status/1711039754249392534

#puzzledd pic.twitter.com/vFzWuuQXU2

— SKG (@sonukg4india) October 8, 2023

    

Math Links for Week Ending Oct 6th, 2023

Featured Links

Our first live webinar is happening this week and as with all of our seasons the first webinar is free for anyone. You can register at https://oame.on.ca/mcis/index.php 
Curriculum Tags: All
https://talks.oame.on.ca/season-6

[New Podcast] This episode features @rjdurocher
previewing their free Oct 11th webinar "Learning Math From the Land, Art and Environment: Holistic Considerations. Stories of Math: Storytelling and (w)holism". More info: https://t.co/ggtiNsHUrG#mathchat #MTBoS #iTeachMath pic.twitter.com/2VI2a7Ew2m

— OAMEtalks (@OAMEtalks) October 1, 2023

Resource Links

Desmos 3D is here
Curriculum Tags: MCV4U
https://twitter.com/Desmos/status/1707753534559535311

Develop a deeper understanding of our three-dimensional world with Desmos 3D! Explore dynamic curves and surfaces in a 3D space, all while having your favorite Desmos 2D features at your fingertips. Read about this dynamic new tool in our blog: https://t.co/Qw5XH7lNaR #Desmos3D pic.twitter.com/IMXsQlvVtH

— Desmos (@Desmos) September 29, 2023

Video Links

I like the idea of using the fraction tower to visually add and subtract fractions with unlike denominators.
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1708917145076384147

Someone asked me to share how I would teach adding and subtracting fractions with unlike denominators so here it is: pic.twitter.com/74na0ppSR2

— Howie Hua (@howie_hua) October 2, 2023

Its always good to be able to visualize. 
Curriculum Tags: Gr8, Gr7

https://twitter.com/howie_hua/status/1708164957962199516

Which is greater: 7/11 or 8/12? (Do you know of this fraction comparison strategy?) pic.twitter.com/HPqvo83wGR

— Howie Hua (@howie_hua) September 30, 2023

Image Links

Determine the angle
Curriculum Tags: Gr8, MTH1W
https://twitter.com/pickover/status/1710438636162810137

Mathematics.

What is the angle next to the eye? (Assume these are all straight lines: ABCD, BEI, GHIJ, CEH.)

“Geometry aims at knowledge of the eternal.”
~ Plato, Republic, c. 380 BC pic.twitter.com/2ZKBaivFWm

— Cliff Pickover (@pickover) October 6, 2023

Math Links for Week Ending Sept 29, 2023

Featured Links 

I always love how @MathEqualsLove does the work for you. In this case five different activities to use as stations for rational functions. Get all the downloads at the link below. And for some more rational function activities, you can check out some from me here. 
Curriculum Tags: MHF4U
https://mathequalslove.net/end-behavior-of-rational-functions-stations-activity/

I'm pretty proud of this set of stations activities I created for AP Precalculus to practice finding the end behavior of rational functions.

My favorite of the stations is "Building Rational Functions." https://t.co/m88Ly7YB1F#mtbos #iteachmath #apprecalculus #teach180 pic.twitter.com/8AsOCi74Ux

— Sarah Carter (@mathequalslove) September 29, 2023

Resource Links 

I appreciate that @KarenCampe continues to post these classic sets of @NCTM calendar problems. They are a great resource any time of the year. 
Curriculum Tags: All
https://twitter.com/KarenCampe/status/1706342647630016716

There's still a few days of September left to do som #math #ProblemSolving !
Check out the Calendar of Problems and stay tuned for solutions later this week!
Share how you/your Ss thought about the problems here or on the post!#MTBoS #iTeachMath #T3Learnshttps://t.co/nSmnPUKqEF

— Karen Campe (@KarenCampe) September 25, 2023

Video Links 

I love "multiply by 1" as my one of my favourite mathematician "tricks" and guess what? Here's another use. 
Curriculum tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1707184122903605727

Do you know why "keep change flip" works? If not, find out in around 60 seconds. pic.twitter.com/3H36YfuQk9

— Howie Hua (@howie_hua) September 28, 2023

This video pairs well with the one above. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1706818318290837750

Can you think of a context where we divide by a fraction? Can you visualize dividing by a fraction? If not, find out in this video! pic.twitter.com/E2RQcVkDlu

— Howie Hua (@howie_hua) September 26, 2023

Image Links 

I always used to love having my students prove problems like this. And then what usually follows is the philosophical discussion of why it's true. 
Curriculum Tags: MCR3U
https://twitter.com/pickover/status/1705731451130380341

Mathematics.

A mathematician emerges from a cave, hands you the slip of paper below, and asks "Does 0.999... (consisting of an unending sequence of 9s after the decimal point) equal 1? " What is your answer? pic.twitter.com/V5MwWKduv5

— Cliff Pickover (@pickover) September 23, 2023