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

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