Math Links for Week Ending Jul. 29th, 2022

Featured Links

A few weeks ago @DDMeyer asked for submissions to make a "mystery box" where people put numbers in and it spits out other numbers. Then you have to guess the pattern. Well here's a bunch of the submissions. There are some cool ideas
Curriculum Tags: All
https://danmeyer.substack.com/p/check-out-these-thirty-mathematical

🌴 Check out these thirty mathematical mystery boxes created by people in our community! Tell me your favorite and why. #iteachmath https://t.co/OQwPpKupbB pic.twitter.com/WM4kybA9iy

— Dan Meyer (@ddmeyer) July 28, 2022

Resource Links

I totally appreciate all the digital resources that @Tim puts together, here's one in the open middle format about Pythagorean Theorem
Curriculum Tags: Gr8, MTH1W, MFM2P, MPM2D
https://twitter.com/TimBrzezinski/status/1552775089875308544

Tired of having Ss do the same old solve-for-x Pythagorean Theorem Qs year after year?

If so, why not engage next year’s Ss in higher level thinking with this concept in an @openmiddle format?

Explore: https://t.co/gBul42KGie @geogebra @robertkaplinsky #MTBoS #ITeachMath pic.twitter.com/sjYvpA0whV

— Tim Brzezinski (@TimBrzezinski) July 28, 2022

Video Links

I have seen this as a T-shirt but, here it is as a video if you haven't seen the shirt
Curriculum Tags: MCR3U, MHF4U
https://twitter.com/pickover/status/1550968633186308097

Mathematics dance.

Source: https://t.co/KdJ4slS416 pic.twitter.com/wZISfcIBxS

— Cliff Pickover (@pickover) July 23, 2022

I think this very cool video could be a catalyst to talk about powers of 10 or exponential relationships
Curriculum Tags: Gr8, MTH1W, MCR3U, MCF3M
https://twitter.com/Vaskange/status/1551885655877246977

The original video of my artwork here.
Stay tuned, to discover more infinite stories! pic.twitter.com/4J4pPXUd49

— Vaskange (@Vaskange) July 26, 2022

Image Links

I am totally inclusive about trapezoids, that is that they have at least one pair of parallel sides. But if you think they have to have exactly one pair of parallel sides that's OK too. Either way you can get a T-shirt.
Curriculum Tags: All
https://berkeleyeverett.com/shirts/

Inclusive with people AND trapezoids.

Yup, those are the shirts @hellokritty and i designed with @Sneffleupagus and @Zakchamp

Get yours here: https://t.co/UnZNJlXUox pic.twitter.com/xC0lVqtIoT

— Berkeley Everett (@BerkeleyEverett) April 23, 2022

It's #Fractions for this week's #MathPhoto22
Curriculum Tags: All
https://twitter.com/heidi_schnabel/status/1552588479183392768

It’s time for week 8 of #MathPhoto22! This week, look for images that show #fractions relationships. Take photos & share to Twitter using hashtags #MathPhoto22 and #fractions. pic.twitter.com/VBE2RDRhfN

— YellowBox (@heidi_schnabel) July 28, 2022

That watermelon picture is one of my favourites
Curriculum Tags: All
https://twitter.com/Pierre_Tranche/status/1552647912991096832

Two of my favourite images to start conversation and exploration with students about #fractions.#mathphoto22

First image: @wrightkitchen (https://t.co/MSGVSiDqJl)
Second image: Sakir Gökçebag (https://t.co/zXoQNtoT4U) pic.twitter.com/GdfYWoV7bR

— Pierre Tranchemontagne (@Pierre_Tranche) July 28, 2022

    

Math Links for Week Ending Jul 22, 2022

Featured Links

Are you looking for some free PD from some technology experts? Then look no further then this series of virtual sessions:
Curriculum Tags: All
http://tinyurl.com/helpimteachingmath

Teaching #math? You're invited to four 2-hr PD sessions that'll help you get started w/using @geogebra, @GraspableMath, @MathigonOrg, & @Desmos to engage Ss in fun & meaningful learning! Sponsored by @IowaMathTeach. @davidporas @MrCorleyMath
More info: https://t.co/ktIWsyJy8r pic.twitter.com/Ku4XJBGytV

— Tim Brzezinski (@TimBrzezinski) July 16, 2022

Resource Links

I used to like this theorem when it was in the old gr 13 Algebra and Geometry course but now it's back in the new gr9 course.
Curriculum Tags: MTH1W
https://twitter.com/TimBrzezinski/status/1549771605185888257

Inscribed angles in circles: Quick intuitive investigation. https://t.co/ZXYYugFHpi @geogebra #MTBoS #ITeachMath #geometry #geomchat #math #mathchat pic.twitter.com/jWCv3DBE48

— Tim Brzezinski (@TimBrzezinski) July 20, 2022

Video Links

There are many more resources about solving equations than this video but even if you just watch it, you'll get three different strategies. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://makemathmoments.com/how-to-teach-algebra-3-models-for-solving-2-step-equations/

I have always liked teaching Simpson's Paradox
Curriculum Tags: MTH1W
https://twitter.com/howie_hua/status/1548383836051890176

New TikTok video: The Simpson's Paradox pic.twitter.com/1Gbx5F2k0E

— Howie Hua (@howie_hua) July 16, 2022

I think it's an interesting question to ask what the expected value is when you roll two dice and get to pick the value of the largest. I love the visual models he uses and the detailed algebraic representations. 
Curriculum Tags: MDM4U

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

Image Links

The session I'm doing at NCTM in Los Angeles this year is on this very thing
Curriculum Tags: Gr7, Gr8
https://twitter.com/edsouthall/status/1550039912724025345

It's not surprising that division of (and by) fractions is difficult to get your head around pic.twitter.com/KK0krp0TM1

— Ed Southall (@edsouthall) July 21, 2022

This week's #MathPhoto22 is using #symmetry as it's theme
Curriculum Tags: All
https://twitter.com/jnovakowski38/status/1550229149511344128 

Happy to be hosting week seven of #mathphoto22 - where do you see #symmetry in the world around you? #symétrie #simetria pic.twitter.com/ajF0Pn0BUq

— Janice Novakowski (@jnovakowski38) July 21, 2022

Math Links for Week Ending Jul. 15th, 2022

Featured Links

This is the 5! blanket you never knew you needed. So awesome
Curriculum Tags: MDM4U
https://twitter.com/anniek_p/status/1547611025213558787

It has taken more than a year, but I have finally finished my 5-color permutation blanket. All 120 possibilities. pic.twitter.com/3nk3eT7Dz5

— Annie Perkins (@anniek_p) July 14, 2022

Resource Links

I like the bending of the radius around the circle in this instructional interactive about what a radian is
Curriculum Tags: MHF4U
https://twitter.com/TimBrzezinski/status/1545403528289562626

What exactly is a radian? Quick interactive & intuitive student @Desmos exploration: https://t.co/IS28zuMxiM @AlgebraDesmos #MTBoS #ITeachMath #trig #precalc #math #MathChat #geometry #GeomChat pic.twitter.com/0oYDsxEbeZ

— Tim Brzezinski (@TimBrzezinski) July 8, 2022

Do you want some warm ups for algebra class? How about a year's worth?

Curriculum Tags: MTH1W, MPM2D

https://emergentmath.com/2022/07/12/explainer-post-a-years-worth-of-algebra-warm-ups/
https://emergentmath.com/algebra-warm-ups-for-geometry-teachers/

This is the landing page for a year's worth of Algebra warm ups for Geometry teachers (but anyone could use 'em, really). https://t.co/diMLkQzT8k

— Geoff Krall (@geoffkrall) July 12, 2022

Video Links

I have always liked talking about expected value. I always found it was a great time to talk about why the casino always wins. 
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1545922170739519488

New TikTok video: Is this a fair game? pic.twitter.com/dDFwvP1C3e

— Howie Hua (@howie_hua) July 10, 2022

There is definitely a #math or #physics quadratics and falling bodies (literally) problem (or two) that you could make from this video. Especially with the time and speed overlays. 
Curriculum Tags: MPM2D, MCR3U, MCF3M
https://www.youtube.com/watch?v=h-Z8_qsQYXc

Image Links

It's true that once you see them you'll never not see them
Curriculum Tags: All
https://twitter.com/DrGBuckingham/status/1546205522281496576

Look closely.

There are actually 16 circles in this image.

And once you see them, the image appears changed forever.

The wonderful coffer illusion, by Anthony Norcia pic.twitter.com/huRa5IYbjb

— Gavin Buckingham (@DrGBuckingham) July 10, 2022

There is something about this system's of equations question that I like. Maybe because I think that you don't need a lot of complicated methods to get to x² - y² = 7
Curriculum Tags: All
https://twitter.com/sonukg4india/status/1546356608749293568

#morning with #math pic.twitter.com/JNIJJW0TL9

— SKG (@sonukg4india) July 11, 2022

Do you play games that connect to math? Then you should contribute to this week's #MathPhoto22
Curriculum Tags: All
https://twitter.com/maths_kath/status/1547143060630675456

#MathPhoto22 and the theme I am hosting is #mathgames (It's already Thursday here in Australia.) pic.twitter.com/jBBX3suhBg

— Dr Katherine Seaton (@maths_kath) July 13, 2022

Math Links for Week Ending Jul. 8th, 2022

Featured Links

Make sure you follow the whole thread to see how he creates his own custom tile via #Polypad 
Curriculum Tags: All
https://twitter.com/Trianglemancsd/status/1545087885115891718

Here is one of my favorite specialty tiles from the deep triangleman archives. pic.twitter.com/vg2Rqpci6g

— Christopher Danielson (@Trianglemancsd) July 7, 2022

Resource Links

Some proportional reasoning and area of trapezoid resources (among other things) listed here
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/mathsjem/status/1543516195332161537

New! My 159th gems post. Ideas, resources and updates for maths teachers. 💎

Hat tips to follow!https://t.co/KyceMJ6MLp#mathsgems #teammaths #mathschat pic.twitter.com/tXAfWpqDI4

— Jo Morgan (@mathsjem) July 3, 2022

A nice pile of Thinking Classroom resources including stuff specifically for MTH1W
Curriculum Tags:

Gr7, Gr8, MTH1W

https://drive.google.com/drive/folders/1TS_8U1ZJFJ-3zRwcD2RHH1-In5ttA74b

Thanks to the generosity of others who have shared thinking tasks, I've been able to catalogue what's been shared and what I've accumulated over time. I've added the link below to give access. #mtbos @KirstDy @NolanFossum @pearse_margie @Sneffleupagus https://t.co/6pBnWpauio pic.twitter.com/NJA5fUfF9b

— Jordan Rappaport (@JRappaport27) September 17, 2021

A new fraction based question every day. Check them all out
Curriculum Tags: Gr7, Gr8, MTH1W

http://fractle.me/

Breaking News: Fractles have now been viewed 10,000 times! See what all the fraction fun’s about at https://t.co/CE3YoYXMfv #mtbos #iteachmath #maths pic.twitter.com/9vuobiwvsb

— Steven Greenstein (@Psyclist) July 3, 2022

I have seen many of these visual proof's of the angle sum triangle theorem (I've made a few myself) but I kinda like this one where the corners are physically removed.
Curriculum Tags: Gr7, Gr8
https://twitter.com/TimBrzezinski/status/1544481117314637827

Triangle interior angles: Alternate exploration. Made with @geogebra : https://t.co/6IWd8a4XmW #MTBoS #ITeachMath #math #MathChat #GeomChat #geometry pic.twitter.com/Ag69M157IR

— Tim Brzezinski (@TimBrzezinski) July 6, 2022

I love that these Ontario Gr7&8 Thinking Classroom tasks are broken down by expectation and by difficulty
Curriculum Tags: Gr7, Gr8
https://twitter.com/GLewisOCT/status/1544713785918750722

After #OAME2022 @pgliljedahl's Fireside Chat, Peter said pre-created #MildMediumSpicy #Assessment charts help provide access to #ThinkingClassroom. @EHorbay challenged us w/ #Transformations @BartVanslack. Here's🔗Gr7: https://t.co/v3VOKFhIZV and 🔗Gr8: https://t.co/HhDabxYkw0 pic.twitter.com/LBdaiJ7lDc

— Gerard Lewis, OCT (@GLewisOCT) July 6, 2022

Video Links

I was reminded of this nice visualization from @MagicPi2
Curriculum Tags: MTH1W
https://twitter.com/SteveStuWill/status/1544088845079089152

Visual proof that the exterior angles of a polygon add up to 360 degrees. 👍

Credit: @MagicPi2 https://t.co/H13V7wOPaN pic.twitter.com/1gzdYRBMWM

— Steve Stewart-Williams (@SteveStuWill) July 4, 2022

Image Links

Way back when I was a kid and there were only rectangular Legos, most of mine were red and white
Curriculum Tags: All
https://twitter.com/simongerman600/status/1543596683690393601

Cool chart by @neilrkaye shows the distribution of brick colours in the current Lego sets. Are the Star Wars sets the reason for the black and white dominance? pic.twitter.com/tXqAzo68iy

— Simon Kuestenmacher (@simongerman600) July 3, 2022

They both look like they could be kites but you have to employ a bit of Pythagorus' theorem to figure out which.
Curriculum Tags: Gr8

https://twitter.com/StudyMaths/status/1544403600792772609

Which, if any, is a kite? pic.twitter.com/veOy9pPyad

— Jonathan Hall (@StudyMaths) July 5, 2022

This week's #MathPhoto22 is all about #Estimation
Curriculum Tags: All
https://twitter.com/mary_mauger/status/1545004247628091392

"Welcome to Week 5 of #MathPhoto22! This week, we’re looking for images and situations that encourage #estimation. Take photos & share to Twitter using hashtags #MathPhoto22 and #estimation. #MTBoS #iTeachMath #estimation180 pic.twitter.com/JdkRBAtO9n

— Mary Auger☮️ (@mary_mauger) July 7, 2022

    

Math Links for Week Ending Jul. 1st, 2022

Featured Links

These Twitter chats are pretty good and the more people on them, the better. So find one that you are interested in and take part. 
Curriculum Tags: All
https://twitter.com/MNmMath/status/1541147505295065089

It's official! The #ElemMathChat calendar is full to the brim with AMAZING chat leaders for the 22-23 school year! There were so many amazing hosts that I needed to add days to the beginning and end of the calendar! Wowza! Check out the lineup here! https://t.co/QRx21Y7suW pic.twitter.com/Qfv5EJPOBA

— Melynee Naegele (@MNmMath) June 26, 2022

Resource Links

Did you know that there is a journal dedicated to mathematics and art?
Curriculum Tags: All
https://twitter.com/msmathcomp/status/1542141639992508416

Our work is #OpenAccess in @MathsArts, thanks to the support by @tudelft. Thanks to my co-authors for a great collaboration, to the editors @Gelada and @henryseg, and to @dfg_public for supporting my research conducted at @TUDelft_CGV. Full article: https://t.co/SFwuw5gBA6 13/13

— Dr. Martin Skrodzki (@msmathcomp) June 29, 2022

I am a sucker for anything (even loosely) connected to tessellations
Curriculum Tags: All
https://twitter.com/MathTechCoach/status/1541012862683987971

Good Sunday morning #Math twitter! Give this @GeoGebra substitution fractal maker a try this morning, and post a screenshot of something cool you make!https://t.co/5N3hZRBGYh pic.twitter.com/8idOQdTfuh

— Steve Phelps (@MathTechCoach) June 26, 2022

I really like it when something complex (area of a regular polygon) can be related to something much simpler (are of a rectangle/parallelogram)
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/dment37/status/1540967711114772480

Area of a regular polygon @geogebra https://t.co/9SmQHuBXiJ#geogebra @mathematicsprof #math #science #iteachmath #mtbos #visualization #elearning #geometry #Physics pic.twitter.com/mvsRbFA1XO

— Daniel Mentrard (@dment37) June 26, 2022

Video Links

Who doesn't like a good fractal animation
Curriculum Tags: All
https://twitter.com/matthen2/status/1540659648705056770

growing a Koch snowflake pic.twitter.com/aN1OpB9UTk

— Matt Henderson (@matthen2) June 25, 2022

I think the first time I learned about perfect numbers was in @adambspencer's Book of Numbers. But you could definitely use perfect numbers to practice numeracy skills in your class. 
Curriculum Tags: All
https://twitter.com/howie_hua/status/1541796763471732737

New TikTok video: It's a perfect day today! pic.twitter.com/MGtlWhE72C

— Howie Hua (@howie_hua) June 28, 2022

It's nice to talk this through like that but thanks to Wolfram Alpha you can just count :-)
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1542660362356436993

New TikTok video: How many zeroes are at the end of 100! ? pic.twitter.com/GROg9AuKeA

— Howie Hua (@howie_hua) July 1, 2022

Image Links

I think this could be turned into a nice vector task. 
Curriculum Tags: MCV4U
https://twitter.com/MeganGuinan1/status/1540713739246116864

Quite likely one of the cleverest tasks I’ve seen In ages 😍😲😍 from @giftedHKO #MathsConf29 pic.twitter.com/AlHXJtl55C

— Megan Guinan (@MeganGuinan1) June 25, 2022

This could be a nice trig problem
Curriculum Tags: MCR3U
https://twitter.com/dment37/status/1541782277579055104

Blue area?@geogebra #geogebra pic.twitter.com/jLMfOw3yqU

— Daniel Mentrard (@dment37) June 28, 2022

This soup could be good
Curriculum Tags: All
https://twitter.com/mathladyhazel/status/1541435180656693248

Today's special: Fibonacci's Soup 😅 [https://t.co/KUUsjxsks8] pic.twitter.com/9I1x6Uo7fN

— Math Lady Hazel 🇦🇷 (@mathladyhazel) June 27, 2022

For when you start teaching function notation
Curriculum Tags: MPM2D, MCR3U, MCF3M
https://twitter.com/pickover/status/1540845188075192321

This is a form of mathematics humor, circulating widely on the Web. pic.twitter.com/MQmtZV1yl1

— Cliff Pickover (@pickover) June 25, 2022

Here's a nice visualization of a probability gradient for Risk
Curriculum Tags: MDM4U
https://twitter.com/DataIsBeautiful/status/1541119501495926786

[OC] The probability of winning a battle as an attacker in the board game Risk https://t.co/Ue9iWUU0lN #dataviz

— r/DataIsBeautiful (@DataIsBeautiful) June 26, 2022

This week's #MathPhoto22 is #Curves but use the hashtag #MathCurves (its a bit cleaner)
Curriculum Tags: All
https://twitter.com/TheErickLee/status/1542855848107675648

A great start to week 4 of #MathPhoto22. We'll switch to using the hashtag #mathcurves in order to keep your Twitter feeds focused on less salacious content. https://t.co/RSKmChAhd8 pic.twitter.com/yAlcJBTBRF

— Erick Lee HRCE Math (@TheErickLee) July 1, 2022