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

Math Links for Week Ending Sept 22nd, 2023

Featured Links

You can always count on @JoelBezaire to find some real data and be able to Desmos-ify it.
Curriculum Tags: MDM4U
https://teacher.desmos.com/activitybuilder/custom/650b48de8ca34aa842102656?collections=5f2d973a1b138f562ace75d0

Alright, I (very predictably, for me) @desmosclassroom'd this joint: https://t.co/nlUW6NWnnr

Thanks @CodifyBaseball for the inspiration! https://t.co/fGEJqvho5M

— Joel Bezaire (@joelbezaire) September 21, 2023

Resource Links

A good resource for students to become fluent with multiplication.
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1705220552238022982

Factris is a game that teaches about simple arithmetic, divisibility, factors and prime numbers – and it is incredibly fun. For maximum points, try to clear as many rows as possible at once. What is your high score?

Play at https://t.co/Cxux1vCQaH pic.twitter.com/FO7rMArEgE

— Mathigon (@MathigonOrg) September 22, 2023

And how about this for modelling exponential functions
Curriculum Tags: MHF4U
https://twitter.com/NatBanting/status/1703912889126674930

How many followers when Mr. Beast is “x” years old? https://t.co/TUUuIcqImg

— Nat Banting (@NatBanting) September 18, 2023

Some resources on proportions
Curriculum Tags: MTH1W
https://twitter.com/giftedHKO/status/1701118945162400023

All things proportion. At the end of the week once this section is complete I will share the PowerPoint versions too. https://t.co/0p99sVNrsx pic.twitter.com/WDlDc26NPY

— Miss Konstantine (@giftedHKO) September 11, 2023

Video Links

Connecting Sine to the circle in two dimensions
Curriculum Tags: MCR3U
https://commons.wikimedia.org/wiki/File:Cercle_trace_sinus_cosinus_anim.gif

Mathematics.

Drawing of the sine and cosine functions from the trigonometric circle. Source: https://t.co/YWsGsJoowH pic.twitter.com/qtHQP4WwPQ

— Cliff Pickover (@pickover) September 22, 2023

Image Links

Though the topic may not be appropriate for school, it could still be a discussion.
Curriculum Tags: MTH1W
https://twitter.com/jennalaib/status/1705298891086659942

Spotted on Boylston St 👀

I am concerned about both the lack of scale along either access AND the proportional line. I cannot imagine this would continue indefinitely for anyone! 🥴 #TURData pic.twitter.com/QqsvvwvUIX

— Jenna Laib (@jennalaib) September 22, 2023

A good math starter

Curriculum Tags: All
https://twitter.com/Math_World_/status/1705184470951674326

Which number is missing? In how many seconds did you find? pic.twitter.com/X9rHBvwBeF

— Math World (@Math_World_) September 22, 2023

Have students explain this
Curriculum Tags: MCR3U
https://twitter.com/howie_hua/status/1704645367739080716

Series meme pic.twitter.com/bUtgIThZwu

— Howie Hua (@howie_hua) September 20, 2023

    

Math Links for Week Ending Sept 15th, 2023

Featured Links

I like to share stuff I've found. That's what this blog is. And so I love when others do the same. In this case a post from @Mathsjem and another from @KarenCampe.
Curriculum Tags: All
https://www.resourceaholic.com/2023/09/5-maths-gems-174.html
https://karendcampe.wordpress.com/2023/09/09/carnival-of-mathematics/

New! My 174th gems post. Ideas, updates and resources for maths teachers. 💎https://t.co/4lF0ro2R9E

Hat tips to follow!#mathsgems #mathschat #mathstlp #mathscpdchat #teammaths pic.twitter.com/rYhQuJMY2w

— Jo Morgan (@mathsjem) September 10, 2023

New blog post: 219th Carnival of Mathematics!https://t.co/gKakrZ4IHG#MTBoS #ClassroomMath #iTeachMath #MathChat

— Karen Campe (@KarenCampe) September 9, 2023

Resource Links

I love the way that @JemMaths used microblogging to outline this whole lesson on scatterplots. Including the start where she claims to hate them. Be sure to look at the whole set of posts to get the gist and follow the link below to get all the goodies. 
Curriculum Tags: MTH1W
https://maths.ormistonacademiestrust.co.uk/statistics-probability/

So writing a unit on scatter graphs intrigued me. How can I do it better? The result is @OAT_Maths Unit SP2: Bivariate Data. We start by looking at relationships between two variables (as a general idea, no technical vocab) pic.twitter.com/aB5lHgo9Pb

— Jemma Sherwood (@jemmaths27 on Threads) (@jemmaths) September 11, 2023

Video Links

Any time you can use a Venn diagram in math class is a good time :-)
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1700496257901535236

I wish I was taught this way of finding the GCF and LCM when I was in school. It's so much more efficient than factor trees. pic.twitter.com/bxvyU10v8R

— Howie Hua (@howie_hua) September 9, 2023

I like how the grey shapes only change orientation and not size or shape.
Curriculum Tags: All
https://twitter.com/KeishiroUeki/status/1700492780857143641

pic.twitter.com/rSCvr9ejZj

— 上木 敬士郎 / Keishiro Ueki (@KeishiroUeki) September 9, 2023

Image Links

I'm not sure what it is about simplifying radical expressions but I love it
Curriculum Tags: MPM2D
https://twitter.com/sonukg4india/status/1700710823390532021

#morning with #math#solve for x pic.twitter.com/Pw2fJEgrrT

— SKG (@sonukg4india) September 10, 2023

Even though Seinfeld may not be the most relevant for students, it's still a great starter. 
Curriculum Tags: All
https://twitter.com/benjamindickman/status/1700372196177162647

#SeinfeldMath: Is Kramer's estimate accurate? Too high, too low, just about right? How do you know? or What's your intuition?

📺🧮

Image text:
That's a nickel a day for 20 years. It's going to be $50,000. pic.twitter.com/A70TDdAtGT

— Benjamin Dickman 🎻🧱 (@benjamindickman) September 9, 2023

I think that you could do this with all kinds of things. The thing and it's opposite.
Curriculum Tags: MCR3U, MHF4U
https://twitter.com/benorlin/status/1701248053280170400

All of trigonometry in a single image, you're welcome pic.twitter.com/Wfqv0z1WGM

— Ben Orlin (@benorlin) September 11, 2023

I love heat maps but I would have guessed 7x8 would have been the most difficult

Curriculum Tags: All
https://twitter.com/infobeautiful/status/1701305612695409147

Quick! What's 6✖️8?
This heatmap shows the trickiest multiplications for kids aged 5-8. Love to see a similar study on adults to see how they compare! #dataviz #maths pic.twitter.com/gaQ2s4r3fv

— Information is Beautiful (@infobeautiful) September 11, 2023

    

Math Links for Week Ending Sept 8th, 2023

Featured Links

It may be a bit self indulgent but this week it's me. At #OAME2023, I did an updated version of my session on how to listen to math based podcasts. And for the first episode of season 6 of the @OAMEtalks podcast (where we feature speakers from the most recent OAME conference) we have the entire audio version of the session that I did. There are excerpts from all kinds of math based podcasts so that you can have a sample of things to listen to in full. You can listen to the podcast, below, and also follow along in with the slide deck. And you can hear the whole set of season 6 episodes at the OAMEtalks website
Curriculum Tags: All
https://talks.oame.on.ca/

Reasource Links

I love when people share resources, even if it's not their own. In this case, this resource is more than a math video of the week (which can be found in the Word doc). Check out the padlet for all the goods
Curriculum Tags: All
https://padlet.com/ECR_Maths/ks5-maths-enrichment-and-extras-62ylpics8uqudvav

BRILLIANT resource. (
And a reminder I need to schedule my Monday emails). 😀 https://t.co/D0cjCABty1

— Hannah 🐦 (@missradders) September 5, 2023

Video Links

Even though the concept of this movable bridge is pretty cool, the math of piecewise functions is a good applications for senior high school math.
Curriculum Tags: MHF4U, MCV4U
https://www.youtube.com/watch?v=SsGEcLwjgEg

Image Links

And for your calculus kids who want a function that is differentiable nowhere but continuous everywhere, here you go.
Curriculum Tags: MCV4U
https://twitter.com/pickover/status/1699811340259377645

Don't you just love the Weierstrass function?

"In mathematics, the Weierstrass function is an example of a real-valued function that is continuous everywhere but differentiable nowhere. It is an example of a fractal curve. It is named after its discoverer Karl Weierstrass."… pic.twitter.com/ANcr9207rP

— Cliff Pickover (@pickover) September 7, 2023

Math Links for Week Ending Sept 1, 2023

Featured Links

It's the beginning of the year (at least it is here in Ontario) and I like highlight activities that help you connect with your students. From  @SaraVDWerf's we have her week 1 activities. There are so many good ideas here to help build relationships with your new students. 
Curriculum Tags: All
https://www.saravanderwerf.com/my-week-1-math-posts-plus-something-new/

And from @MathEqualsLove we have 40 suggestions for 1st week activities 
Curriculum Tags: All
https://mathequalslove.net/first-week-of-school-activities/

Resource Links

Also talking about building relationships is @KarenCampe. She actually mentons @SaraVDWerf's name tents but the bigger focus is on birthdays and other ways to have your students be seen. 
Curriculum Tags: All
https://karendcampe.wordpress.com/2023/08/30/birthdays-being-seen/

New Blog Post: "Birthdays & Being Seen"
What do you do to forge relationships with your students and celebrate during the year?#MTBoS #iTeachMath #T3Learnshttps://t.co/7Z3qKxxVQc

— Karen Campe (@KarenCampe) August 30, 2023

And @KarenCampe continues to post old NCTM Calendar problem sets. This one from Sept 2009
Curriculum Tags: All
https://karendcampe.wordpress.com/2023/09/01/september-calendar-problems/

Problem solving Calendars are BACK!
Just posted the September Calendar of Problems!
Enjoy & let us know any working out you want to share, esp by students. #MTBoS #iTeachMath #T3Learns #ProblemSolving #Algebra #Geometry#MathChathttps://t.co/nSmnPUKqEF

— Karen Campe (@KarenCampe) September 1, 2023

Adding to her list of first week activities is @MathEqualsLove who brings us Number contests. Something all can play and be successful. 
Curriculum Tags: All
https://mathequalslove.net/number-contests-for-the-first-day-of-school/

Looking for a new activity for the first day/week of math class? Look no further than this series of first day number contests that will get students working together to try and read one another's minds in a fun math-y competition. https://t.co/CxWN3zzpeO #mtbos #iteachmath pic.twitter.com/nJYWXEWgQq

— Sarah Carter (@mathequalslove) August 27, 2023

Video Links

A couple of geometric animations with squares
Curriculum Tags: All
https://twitter.com/golan/status/1695892923097731251

Thinking about giving my Creative Coding sophomores a @beesandbombs-inspired "figure-ground reversal" GIF loop assignment. Did a few tests to get a feel for the difficulty. It's only like 30 lines of code to get something working...but this is definitely not intro-level material. pic.twitter.com/ChzBwhPvaF

— Golan Levin (@golan) August 27, 2023

https://twitter.com/golan/status/1695893599550836913

One more pic.twitter.com/xfIjOWIy7K

— Golan Levin (@golan) August 27, 2023

Image Links

It's pretty cool that these are hand drawn images
Curriculum Tags: All
https://twitter.com/pickover/status/1696620640457941295

Mathematics.

Leonardo da Vinci's Illustration for De Divina Proportione (published 1509). What is the name of this object? https://t.co/BCnNDNqT7Y pic.twitter.com/VUEGZkc2aO

— Cliff Pickover (@pickover) August 29, 2023