Math Links for Week Ending Dec. 31st, 2021

Featured Links

I love the idea of students creating their own review activity. In this case, @MathyCathy has created a Desmos template where students each get a slide (chosen at random) to create a problem and then have to present that problem to the rest of the class. You could probably do this with a slideshow but I think it may work better via a Desmos activity. Get all the details of the logistics of doing this in the blog post
Curriculum Tags: All
https://www.mathycathy.com/blog/2021/12/template-ideas-for-review-and-self-reflection/

Resource Links

Some fractals to bring in the new year
Curriculum Tags: All
https://twitter.com/MathTechCoach/status/1475278882211250178

And with this Substitution Fractal...https://t.co/6fODGtdSif https://t.co/K2sbFXxSgC pic.twitter.com/g1jto2fCH9

— Steve Phelps (@MathTechCoach) December 27, 2021

Video Links

A couple videos from @HowieHua, one on fractions and the other on cross multiplying
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/howie_hua/status/1475632657564266497
https://twitter.com/howie_hua/status/1475254131531026433

New TikTok video: Comparing fractions using common numerators pic.twitter.com/Ip0wdldC9o

— Howie Hua (@howie_hua) December 28, 2021

New TikTok video: Why does cross multiplying work? pic.twitter.com/P2U4w5nMWy

— Howie Hua (@howie_hua) December 26, 2021

Image Links

Bring in the new year with Pythagorean Theorem
Curriculum Tags: Gr8, MTH1W
https://twitter.com/edsouthall/status/1476872329888243718

Happy New Year 2022 wherever you are :) pic.twitter.com/mFLf6XIBGw

— Ed Southall (@edsouthall) December 31, 2021

This is good both from an informative standpoint and as a great ratio/rate problem source. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/jennalaib/status/1476270272219123717

Ripe with mathematical possibility!

There’s another chart in the replies that flips the ratio — from streams per dollar to dollars per stream. #mtbos #msmathchat #iteachmath https://t.co/dh2MFCjiiw

— Jenna Laib (@jennalaib) December 29, 2021

There geometry everywhere
Curriculum Tags: All
https://twitter.com/GeomeTribal/status/1476449100363177993

2.7-meter-long wall hanging, embroidered stitch by stitch by a woman in Chefchaouen, Morocco, circa 1800.
(Best seen enlarged) pic.twitter.com/q2EwnOa6ZJ

— Ancient Geometry (@GeomeTribal) December 30, 2021

Math Links for Week Ending Dec. 24th, 2021

Featured Links

Do you need 133 math manipulatives? 
Curriculum Tags: All
https://mathsbot.com/thanks

Merry Christmas everyone, enjoy the holiday!

Have 133 free manipulatives and tools on me. 😉https://t.co/yjS91iWq3h pic.twitter.com/lJ0jAxALNy

— Jonathan Hall (@StudyMaths) December 17, 2021

Resource Links

Another snowflake maker from @MathTechCoach. This time in @Geogebra
Curriculum Tags: All
https://twitter.com/MathTechCoach/status/1472553121746501634

Hey #MTBoS and other interested Twitter-ers. Give this @GeoGebra Fractal Snowflake Creator a try, the take a screenshot and post it in this thread! Let's make it snow!https://t.co/ZxxoEg4TX4 pic.twitter.com/QSDLJzOJVO

— Steve Phelps (@MathTechCoach) December 19, 2021

A nice summary of some math resources including order of operations, trig functions and more from @MathsGem
Curriculum Tags: All 
https://www.resourceaholic.com/2021/12/5-maths-gems-152.html

New! My 152nd gems post. Ideas, resources and updates for maths teachers. 💎https://t.co/0bdhYdrwFK

Hat tips to follow!#mathsgems #teammaths #mathschat pic.twitter.com/40LbHBA2FG

— Jo Morgan (@mathsjem) December 22, 2021

Looking for a new book to put on your shelf, try this one from @MathGeek76

Curriculum Tags: All

https://twitter.com/mathgeek76/status/1474196566898614275

Attention last minute holiday gift shoppers! You can pre-order my book, The Imperfect and Unfinished Math Teacher here: https://t.co/vCgsuF0DmL

Want them to open a gift? Print out this image, stick it in a card, and boom! Problem solved! #iteachmath @CorwinPress #Corwinmath pic.twitter.com/1Oo64K4Ip2

— chase orton (@mathgeek76) December 24, 2021

Video Links

Need a visual of a diagonal for a rectangular prism? Perfect for a cool Pythagorean Theorem problem
Curriculum Tags: MTH1W, MPM2D, MFM2P
https://twitter.com/MagicPi2/status/1471729102113710084

Angle between the diagonal and base of a cuboid#MTBoS #iteachmath #Maths #Maths pic.twitter.com/Lmr5IZ2c56

— Idan Tal (@MagicPi2) December 17, 2021

Image Links

Some words about Ramanujan
Curriculum Tags: All
https://twitter.com/stevenstrogatz/status/1473645104409845763

Today is Ramanujan’s birthday. If you have never read this remembrance by his collaborator G.H. Hardy, you must read it now. (After watching THE MAN WHO KNEW INFINITY, I hear Jeremy Irons’s voice in every line.) https://t.co/L6UXCfZDCq pic.twitter.com/xR7UqIiAvW

— Steven Strogatz (@stevenstrogatz) December 22, 2021

 

Math Links for Week Ending Dec 17th, 2021

Featured Links

I think this would be a fun activity for you to give to your students: Make a Math Meme. Be sure to check the comments for all the examples
Curriculum Tags: All
https://twitter.com/howie_hua/status/1472059465339785218

I asked students to make a meme of me/this class and here are some of them, starting with one that made me laugh out loud: pic.twitter.com/2rR3FE6IMw

— Howie Hua (@howie_hua) December 18, 2021

Resource Links

You can do some pretty cool stuff with Graspable Math
Curriculum Tags: MTH1W
https://twitter.com/math_inquirer/status/1469818648332275719

Wondering if anyone has tried @GraspableMath with Ss in #mth1w? Your observations? I'm going to give it a try. Here's a shareable activity I've made re: simplifying polynomial expressions: https://t.co/gnAnElHkMA #mathedu #onted #iteachmath #MtBos #AforL #AasL pic.twitter.com/L8aW27SJts

— Chris Stewart (@math_inquirer) December 11, 2021

I think any support we can give students when solving equations is helpful. Especially when it's not "follow these 7 steps when you see this situation"
Curriculum Tags: MTH1W
https://twitter.com/joelbezaire/status/1470566365467750412

I did this @Desmos activity again today, and it again went really well. I’m re-upping it here since I just haven’t seen anything else like it lurking around.

Middle school multi-are equations, error analysis, encouraging flexibility with steps, etc. https://t.co/LsePu3iLtY

— Joel Bezaire (he/him) (@joelbezaire) December 14, 2021

I can't wait to start making equations to solve with my face on the values :-)
Curriculum Tags: Gr7, Gr8, MTH1W, MFM1P
https://twitter.com/davidporas/status/1470555607904227330

Do you know you can easily assign values to imported images on Polypad and then use them on the balance scale?

Learn how at https://t.co/RWgtHEtICG

Maybe give this puzzle a try with elementary students?https://t.co/9tlO5dSH31 @MathigonOrg #math #mathchat #iteachmath #mtbos pic.twitter.com/bAutvhyo7o

— David Poras (@davidporas) December 14, 2021

Video Links

Math is everywhere, right? Especially if you need a bar graph
Curriculum Tags: Gr7, Gr8
https://twitter.com/msbjacobs/status/1470136358274482176

Math(s) doesn’t get any sweeter than this @QualityStreetUK pic.twitter.com/WfuDYyDBlW

— Michael Jacobs (@msbjacobs) December 12, 2021

I like the numerical way that is used to prove this. And check out the comments for a visual solution
Curriculum Tags: MTH1W, MCR3U
https://twitter.com/howie_hua/status/1471283950190358534

New TikTok video: Which is greater, 9^10 or 10^9? pic.twitter.com/iBpM8RicOv

— Howie Hua (@howie_hua) December 16, 2021

A different way to do a net of a cylinder:
Curriculum Tags: Gr7, Gr8
https://twitter.com/MagicPi2/status/1469575522342641665

Net of an open cylinder#mtbos #iteachmath #Math #Maths pic.twitter.com/8ewECcp95u

— Idan Tal (@MagicPi2) December 11, 2021

Image Links

Here is some data that you can have your kids use to verify what they know about exponential growth
Curriculum Tags: MCR3U
https://twitter.com/imgrund/status/1471323108871188480

All of my R values tomorrow reflect the newest data on generation times, released December 2nd, 2021 from a paper out of London, England.

Here’s my updated, “What does this Rt mean?” chart which corresponds to these significant changes. pic.twitter.com/YFV472ODzK

— Ryan Imgrund (@imgrund) December 16, 2021

It's always good to see math in nature
Curriculum Tags: All
https://twitter.com/GeomeTribal/status/1469004937220829188

Natural microscopic dodecahedrons, with twelve pentagonal sides 😍

1. Pollen grain from the greater stitchwort (Stellaria holostea)

2. Braarudosphaera bigelowii, a single-celled phytoplanktonic algae with a fossil record going back 100 million years, long before Plato! pic.twitter.com/EgYSD2j5nI

— Ancient Geometry (@GeomeTribal) December 9, 2021

A logarithmic Meme, nice
Curriculum Tags: MHF4U
https://twitter.com/cbrownLmath/status/1469766108647329792

I wish I could take credit for this meme but it is definitely @howie_hua worthy even if he didn’t make it himself. #mathjokes #mtbos #mathmemes #weplaymath @lilmathgirl pic.twitter.com/a3JqKylCip

— "Dr. Chris" Brownell _Just got Boostered! (@cbrownLmath) December 11, 2021

Math Links for Week Ending Dec. 10th, 2021

Featured Links

This is a good reminder that an engaging lesson doesn't need to be complicated and have all kinds of bells and whistles.
Curriculum Tags: MTH1W
https://twitter.com/MaryBourassa/status/1468997599004876801

Also in #MTH1W today, they noticed and wondered as I moved the points on this Desmos screen. We've spent a good chunk of time on rate of change so this was not a big leap. https://t.co/hAA0tnwZ7U

— Mary Bourassa (@MaryBourassa) December 9, 2021

Resource Links

Here's a quick way to collect some data to talk about distributions.
Curriculum Tags: MTH1W, MDM4U
https://teacher.desmos.com/activitybuilder/custom/61b1436ed793b3e2e47d1d3a

Inscribe a unit circle in a 2x2 square. Place a random point on the circle's edge and another on the square's edge, connecting them with a segment. What is the shortest possible segment length? Longest? Typical? @Desmoshttps://t.co/ZMGGfxx2nL pic.twitter.com/d23UkLauuj

— Steve Phelps (@MathTechCoach) December 9, 2021

Another logic puzzle from @MathEqualsLove
Curriculum Tags: All
https://mathequalslove.net/reindeer-logic-puzzle/

Someone spotted a typo in the printable file I made for the Reindeer Logic Puzzle. Somehow I made places to write the names of only 7 of the 9 reindeer.

It has been fixed! Sorry if this caused you any confusion! https://t.co/1ICTXwubfK #mtbos #iteachmath #puzzlingclassroom pic.twitter.com/q5AKJO0APr

— Sarah Carter (@mathequalslove) December 9, 2021

Article Links

We've all seen sample lessons on creating art with equations but this assignment is a bit different. In it, student shave to make a video of their favourite Equation (and hopefully along the way show the beauty in mathematics). Thanks to @KMarkPet for this one 
Curriculum Tags: MTH1W, MPM2D, MCR3U, MHF4U
https://www.edutopia.org/article/exploring-beauty-math

Video/Audio Links

I have made a Desmos version of one of @SteveWyorney's Esti-Mysteries. The link will take you to the Desmos Activity and the video will explain how to change that Desmos activity so that you can make it match any of Steve's Esti-Mysteries
Curriculum Tags: All
https://engaging-math.blogspot.com/p/desmos-activities_10.html

If you are looking for an interesting context where rates are used, check out this episode of @TheIndicator. They are talking about vinyl record sales and at 6:38 they go into the calculation of how long it would take to press 500,000 records. It's just a small calculation but the context is interesting and hopefully will give students insight as to when rates can be used. Check out this podcast and many more math based podcasts. 
Curriculum Tags: Gr7, Gr8, MTH1W
http://ontariomath.blogspot.com/p/podcasts.html

Image Links

Who knew that getting a PS5 was this easy
Curriculum Tags: All
https://twitter.com/mrmakemathsense/status/1468715598582538246

Ss showed me a pic of a PS5 today and it made me laugh so hard I almost shout milk through my nose. #iteachmath #mtbos #mathchat #mathisfun #maths #gaming @MrNunesteach @MrsSheehanMath @NatBanting @msmakemathsense @KirstDy @KSquared_Math @Hedreich @Willmdunn @mathladyhazel pic.twitter.com/encCQAJTeg

— J Hamilton (@mrmakemathsense) December 8, 2021

Math Links for Week Ending Dec. 3rd, 2021

Featured Links

There are 10 school days left until the Christmas break and @MSBJacobs is already a few days into the 12 days of Christmas. Check out his blog http://themathguy.blogspot.com/ or the @DCDSBMath Twitter feed to get them all as they come out
Curriculum Tags: All
https://twitter.com/DCDSBMath/status/1466039835593003017

It's the #12DaysOfChristmath Day 1! Here is the intermediate puzzle for you to try at home or in class. pic.twitter.com/GunJPWL0Yt

— DCDSB Math (@DCDSBMath) December 1, 2021

Resource Links

Anyone can come up with an @OpenMiddle problem
Curriculum Tags: Gr7, Gr8
https://twitter.com/robertkaplinsky/status/1466915910296481800

This @openmiddle problem is great for 3rd graders studying equivalent fractions. It comes from my son, Owen Kaplinsky! https://t.co/T2OOZM2LrX #iteachmath pic.twitter.com/X5fD3lZaSO

— Robert Kaplinsky (@robertkaplinsky) December 3, 2021

More @OpenMiddle type questions from @AliceKeelor, this time dealing with calculating tax
Curriculum Tags: Gr7, Gr8, MTH1W

https://twitter.com/alicekeeler/status/1464765998616170500

Use this Google Jamboard for students to strategize finding TAX. https://t.co/7jVXUvj0LP

For more sample Jams check out the book Teaching with Google Jamboard on Amazon https://t.co/DUYtVWnbBw #googleEDU @openmiddle pic.twitter.com/02sYKhW66T

— Alice Keeler (@alicekeeler) November 28, 2021

Seems fitting to make a snowflake out of fractals
Curriculum Tags: All
https://twitter.com/MathTechCoach/status/1466917759586127874

Hey #MTBoS Twitter! You know what to do! Drag the points in this @geogebra app to make a cool Fractal Snowflake and post a pic!https://t.co/7pPEaiYlm5 pic.twitter.com/ry1fx8GRTe

— Steve Phelps (@MathTechCoach) December 3, 2021

Video/Audio Links

This month's @OAMEtalks podcast features @ChapCat talking about assessment. 
Curriculum Tags: All
https://talks.oame.on.ca/season-4

[New Podcast] This episode features @chapcat with a preview of their Dec 8th webinar "Count on Great Assessment!". Check it out at:https://t.co/0vDefTpRE3#mathchat #MTBoS #iTeachMath pic.twitter.com/HTP3BhuAw2

— OAME talks (@OAMEtalks) December 1, 2021

I love a good factorial conundrum. 
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1465485644168237057

New TikTok video: A pop quiz on factorials! pic.twitter.com/1gGaJgIrmt

— Howie Hua (@howie_hua) November 30, 2021

I like how this connects to unit fractions and algebra
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1465849335975870467

New TikTok video: Why do we need common denominators when adding and subtracting fractions? pic.twitter.com/2MKjBGJTlb

— Howie Hua (@howie_hua) December 1, 2021

I have always loved decomposing rectangles when visualizing double digit multiplication. So many connections to fractions and algebra

Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1466571080189943816

New TikTok video: Multiplying with rectangles pic.twitter.com/nopeA9tVpY

— Howie Hua (@howie_hua) December 3, 2021

Image Links

Cook your turkey, with calculus
Curriculum Tags: MCV4U
https://twitter.com/LongFormMath/status/1463907921222246405

Reminder: If you check your Turkey’s temp at two points while it bakes, then Newton’s Law of Cooling can tell you what time your turkey will reach 165°.

Here’s a pic from 2013 when my math grad school friends and I did the calculation. It predicted 6:30 and was almost perfect. pic.twitter.com/KpOoAYwp2l

— Jay Cummings (@LongFormMath) November 25, 2021

    

Math Links for Week Ending Nov 26th, 2021

Featured Links

MoMath is offering a series of "Meet a Mathematician" online  webinars. Although these are not free events, the price is minimal (and you can choose to make a donation to a needy family as well) and you get to hear about what it's like to be a mathematician to boot. Sign up here:
Curriculum Tags: All
https://momath.org/meet-a-mathematician/

Ever wonder what a mathematician does for fun?

Find out by joining host @stevenstrogatz and special guest @emilyriehl, Professor in the Department of Mathematics at Johns Hopkins University TODAY for MoMath's Meet a Mathematician.

Register at https://t.co/9rSEUzQFf0 pic.twitter.com/JGhw1er5LT

— National Museum of Mathematics (@MoMath1) November 22, 2021

Resource Links

I'm a big fan of having students compare stuff as a vehicle to talk about math. In this post, @MrValencia24 uses "same but different" as a way to compare
Curriculum Tags:All
https://twitter.com/SavvasLearning/status/1461726508356091912

💡 "As a mathematics educator, I’m always looking for ways to engage my students and provide them with multiple entry points to the material they are learning." - Libardo Valencia blogs: https://t.co/BNDfNZPORU #iteachmath #MTBos #NCTM21 @MrValencia24

— Savvas Learning (@SavvasLearning) November 19, 2021

A couple of simple activities from Polypad. First some exploration with prime numbers:
Curriculum Tags: All
https://twitter.com/MathigonOrg/status/1462798173575987202

Adding prime numbers together contrasted with multiplying prime numbers together can help students discover the Fundamental Theorem of Arithmetic. Use Number Cards and Prime Factor Circles on Polypad to explore this idea. Try it for yourself at https://t.co/mx5Sane30U pic.twitter.com/jKyg6NF4d2

— Mathigon (@MathigonOrg) November 22, 2021

And @JoelBezaire shows how easy it is to quickly pull a lesson together using the balance scales. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/joelbezaire/status/1462789465508823046

We have super short classes each day of this super short week, & I was struggling to find something worthwhile around the idea of "one step equations with integers".
Cranked this out on @MathigonOrg Polypad in about 15 minutes. Excited to see how it goes https://t.co/xwqc3XwnJm

— Joel Bezaire (@joelbezaire) November 22, 2021

Video Links

Is that your repetend under my vinculum? Though I would probably teach it differently now for what ever reason, I used to love teaching this. 
Curriculum Tags: MTH1W
https://twitter.com/howie_hua/status/1463314561063215113

New TikTok video: How do we convert repeating decimals to fractions? pic.twitter.com/BIRr3gCkfJ

— Howie Hua (@howie_hua) November 24, 2021

Image Links

Here's a fun prompt when dealing with rates of change:
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/MathInTheNews/status/1462775223338471432

Alex Orchin is driving the world’s smallest car 870 miles across the UK to raise money for charity. The 3-wheeled Peel P50 has five-inch diameter tires.

How many times will the tires rotate during his journey? pic.twitter.com/hEXKmivvfl

— Math In The News (@MathInTheNews) November 22, 2021

Math Links for Week Ending Nov 19th, 2021

Featured Links

If you haven't heard, @MathGarden has a new book out called Chasing Rabbits - A Curious Guide to a Lifetime of Mathematics Wellness. It has been receiving praise from all over the place on the InterWebs. Pick it up at your favourite book repository. In the meantime, here's and excerpt. 
Curriculum Tags: All
https://youtu.be/y1bF6_jUkIk

Resource Links

If you are doing any work with 3D vectors, then I think @Geogebra is your tool. 
Curriculum Tags: MCV4U
https://twitter.com/TimBrzezinski/status/1223034965140606977

#3D Vector Components: Dynamic & modifiable illustrator with key Q prompt for Ss: https://t.co/Zg5rRvRGGp. @geogebra #MTBoS #ITeachMath #math #maths #trig #trigonometry #precalculus #MathEd #HSMath #CollegeMath #LifeIs3D #WhyWorkOnlyIn2D? 🤔 pic.twitter.com/UoOd8s2R3f

— Tim Brzezinski (@TimBrzezinski) January 31, 2020

Keep the puzzles coming
Curriculum Tags: All
https://mathequalslove.net/make-30-puzzles/ 

One of my favorite puzzle creators, Erich Friedman, took it upon himself to create a new set of puzzles just for my students. How awesome is that?!?

These Make 30 Puzzles have been a big hit! Enjoy! https://t.co/hDY9dq6tai #mtbos #iteachmath #puzzlingclassroom pic.twitter.com/Pu9YzcOyDi

— Sarah Carter (@mathequalslove) November 18, 2021

Video/Audio Links

A regular polygon? Turns out that regardless of the number of sides, one formula rules them all (when it comes to area, at least)
Curriculum Tags: MTH1W
https://twitter.com/howie_hua/status/1458238058369732609

New TikTok video: Wouldn't it be great if all of these had the same area formulas? Good news, they do! pic.twitter.com/pKwPMVytKY

— Howie Hua (@howie_hua) November 10, 2021

A reminder that math is not just a bunch of unrelated stuff
Curriculum Tags: MCV4U
https://twitter.com/howie_hua/status/1461509204745723910

New TikTok video: Is it a coincidence that the derivative of the area formula of a circle is its circumference formula? pic.twitter.com/JBz2FxGy9M

— Howie Hua (@howie_hua) November 19, 2021

Such a great description and relatively simple construction to create such a complex set of circles by @Matthen2 in this @Numberphile video
Curriculum Tags: All

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

@MarcusduSautoy has a new book about shortcuts in mathematics. It's not about "math tricks" but more about the idea that by finding patterns we can be more efficient in how we use mathematics. Here is an interview with him on the topic. 
Curriculum Tags: All

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

https://freakonomics.com/podcast/frbc-thinking-better/

Image Links

Data about books for any of your literacy focused friends
Curriculum Tags: Gr7, Gr8. MDM4U
https://twitter.com/simongerman600/status/1459569271693053952

What share of the population purchased physical books, what share purchased ebooks in 2020? I purchase real books and audiobooks all the time but ebooks are a rare purchase. I read Moby Dick on my phone once using only micro gaps in my days. Source: https://t.co/TbeRrWrJhr pic.twitter.com/hWZ3pBNnob

— Simon Kuestenmacher (@simongerman600) November 13, 2021

Calculus memes. Nice
Curriculum Tags: MCV4U
https://twitter.com/MathProfPeter/status/1459188752178425862

Me: Teaching how we can apply and interpret the derivative is a major part of a first Calculus course, and so it's important to carefully introduce and motivate each topic.

Also me: pic.twitter.com/B8OnhGsPnC

— Peter Keep (@MathProfPeter) November 12, 2021

There should be no barriers to excelling in math
Curriculum Tags: All
https://twitter.com/Anthony_Bonato/status/1461349070719492105

I'm Anthony Bonato, a proud gay mathematician and author of over 130 papers and five books in my research field of graph theory. To all the LGBTQ+ math folks, know that you don't have to settle for being simply good at math. You can be fantastic at it. #math #STEM #LGBTQSTEMDay pic.twitter.com/Agk0bVZW8v

— Anthony Bonato (@Anthony_Bonato) November 18, 2021

Math Links for Week Ending Nov. 12th, 2021

Featured Links

With coding being new to the grade 9 math curriculum, I don't think there can be any shortage of materials or discussions that can be had to help. In this post @MSBJacob he goes over a lesson on coding dealing with patterning from beginning to end. 
Curriculum Tags: MTH1W
http://themathguy.blogspot.com/2021/10/coding-in-new-grade-9-de-streamed-math.html

Resource Links

I like how @MarkChubb3 has modified @JennaLaib's "Number Boxes" activity to help students with metric unit conversions
Curriculum Tags: Gr7, Gr8
https://buildingmathematicians.wordpress.com/2021/11/06/number-boxes/

The nice thing about these Esti-Mysteries from @SteveWyborny is they start out as estimation questions but then they turn number sense problems.

Curriculum Tags: All
https://stevewyborney.com/2021/11/150-new-esti-mysteries/

Video Links

Math play is important in any grade. In this webinar from @MrValencia24
Curriculum Tags: MTH1W, MPM2D, MCR3U
https://www.youtube.com/watch?v=lftzcFRNct4

I'm not sure why I like this loop so much but it is so satisfying
Curriculum Tags: All
https://twitter.com/hemigon/status/1457204132436086788

#Nodevember days 5 & 6
prompt: "5 sided"#b3d #geometrynodes #nodevember2021 pic.twitter.com/n9erKftRKQ

— hemigon (@hemigon) November 7, 2021

I've seen both of these proofs before but I like the idea of using common found objects. The gum was particularly nice. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1458600157331660801

New TikTok video: Two ways to show why the area formula of a circle is pi*r^2 pic.twitter.com/xyayQGSu3b

— Howie Hua (@howie_hua) November 11, 2021

Image Links

This could be true of all math students with regular problems
Curriculum Tags: All
https://xkcd.com/2529/

     

Math Links for Friday Nov 8th, 2021

Featured Links

There was a time in my teaching career when I did think that it was about me telling students what I knew. I feel so much better that over the last 20 years or so, that has changed for me to match this quote from @HowieHua. I do think, however, that many teachers still like to be the "sage on the stage" and that can sometimes be a roadblock to shifting to a more student centred classroom. 
Curriculum Tags: All
https://twitter.com/howie_hua/status/1454443755684052999

I've always wanted a good teaching quote and this might be it. https://t.co/KumDaERkYC

— Howie Hua (@howie_hua) October 30, 2021

Resource Links

I love this because come up with your opinion and then you can verify that no matter which one you choose, they are all nets of a cube right in PolyPad
Curriculum Tags: Gr7, Gr8
https://twitter.com/shskaercher/status/1455128561665331200

Which cube net do you find most counter-intuitive?#playwithmath in the @MathigonOrg Polypad here:https://t.co/Zq6VFq9uVd pic.twitter.com/0i8RZE12iZ

— Mark Kaercher (@shskaercher) November 1, 2021

I remember being in this session of @NatBanting's way back in 2018 and I've always liked the idea of it. I'm glad he's reminded me of it. 
Curriculum Tags: All
http://natbanting.com/oops-i-forgot/

New Blog Post:

"Oops, I forgot..." (A math classroom routine).https://t.co/qjVtNYO1U7

Inspired by my @OAMElearns session from three years ago and the brilliance of @fawnpnguyen #MTBoS #iteachmath

— Nat Banting (@NatBanting) November 2, 2021

Opinion Links

I definitely agree with this. For me, I don't know that I have done the same lesson twice as a teacher and it has only been by request that I've done the same presentation twice at a conference. I always try to do something new. 
Curriculum Tags: All
https://robertkaplinsky.com/presenters-like-musicians-stand-comedians/

If you're a presenter, you'll want to read this short post about a philosophy to avoid sounding like you say the same thing every time: https://t.co/Ohkdqzm92X #iteachmath pic.twitter.com/O4HBZBSqQB

— Robert Kaplinsky (@robertkaplinsky) November 1, 2021

Video/Audio Links

I love the connection to music and I guess I never really knew how much patterning was involved with the solutions on this @Numberphile video featuring @Ayliean. Thanks to @MSBJacobs for this one.
Curriculum Tags: All
https://www.youtube.com/watch?v=PGuRmqpr6Oo

I like the idea of using patterns to introduce the ideas of identities. 
Curriculum Tags: All
https://twitter.com/howie_hua/status/1455326092328267785 

New TikTok video: 4 results in math that make sense due to patterns pic.twitter.com/EBCKYjTn0x

— Howie Hua (@howie_hua) November 2, 2021

I love a good probability riddle and I like this because it reminds us that knowing the sample set is super important for solving some of these problems. 
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://twitter.com/onlinekyne/status/1455212550858104842

Riddle of the day!

What is the probability of rolling snake eyes 👀 if you know that at least one dice rolled a 1? pic.twitter.com/7wx4zvekcB

— Kyne (@onlinekyne) November 1, 2021

I'm not sure how universally useful this is but it's pretty cool
Curriculum Tags: All

https://twitter.com/pickover/status/1455263074114539521

Mathematics, geometry, witchcraft.

Box transformation with four cuts. Source: https://t.co/DJnVDvgp9T pic.twitter.com/xhO3TguRQh

— Cliff Pickover (@pickover) November 1, 2021

Though this is listed as something for grade 9 math, the stuff that @Gingerich_C and @AledaKlassen are talking about using portfolios in math class. These idea would be good for any class in any grade. 
Curriculum Tags: All

https://talks.oame.on.ca/season-4

This is why it's always good to listen to students explanations of their interesting solutions. 
Curriculum Tags: All
https://twitter.com/howie_hua/status/1455698241484255233

New TikTok video: How one student helped me see arithmetic sequences differently pic.twitter.com/yRx0MoUyEL

— Howie Hua (@howie_hua) November 3, 2021

Image Links

I agree with @Sneffleupagus on this one. I think the lesson here is that, as a teacher, you should be accepting of creative thinking
Curriculum Tags: All
https://twitter.com/Sneffleupagus/status/1456661732139675657

I don't get why the teacher marked this wrong. Perfectly reasonable and logical answer from the student. https://t.co/4eqEorU2xU

— Shelby Strong 💗💜💙 (@Sneffleupagus) November 5, 2021

Math Links for Week Ending Oct 29th, 2021

Featured Links

A spinoff of the NPR show Science Friday is the podcast #ScienceDiction where in each episode they take on a science word and talk about its history. On this episode they talk about the word Algebra. And the thing I love the most about this is that it is that the main part of the story is about a high schooler, Gracie Cunningham, who posted a TikTok asking where algebra came from and it went viral and it seemed like she was made fun of by everyone but math professors. Including great stuff from @StevenStrogatz and @DrEugeniaCheng
Curriculum Tags:All
https://www.wnycstudios.org/podcasts/science-diction/articles/algebra-from-broken-bones-to-twitter-feuds

Resource Links 

I like that @mathequalslove continues to post puzzles that she uses for her class to solve each week. She posts them in a public space and just lets them stew over them.
Curriculum Tags: All
https://mathequalslove.net/three-squared-puzzle/

Check out the Three Squared Puzzle that my students tackled last week! https://t.co/unCOZST23b #mtbos #iteachmath #puzzlingclassroom pic.twitter.com/YD2EKJvXxk

— Sarah Carter (@mathequalslove) October 27, 2021

Doing some work with powers of 10? This might be a good way to start. Thanks to @BenOrlin for reminding me about this book

Curriculum Tags: Gr7, Gr8
https://mathwithbaddrawings.com/2021/09/30/a-hundred-thousand-billion-poems/

Opinion Links 

I having spent about 10 years out of the classroom in a support role, I get what @ddmeyer is saying. Though I’m not a classroom teacher ( I’m a VP) now, being back in a building and sometimes teaching multiple classes a day I have a lot of the same feelings.

Curriculum Tags: All
https://blog.mrmeyer.com/2021/area-man-who-talks-a-lot-about-teaching-teaches-his-first-full-day-in-10-years/

Video Links

I love the contextual connection between ice cream cones and bowls
Curriculum Tags: MDM4U
https://twitter.com/howie_hua/status/1453882299171295235?s=21

New TikTok video: Making sense of the permutation and combination formulas pic.twitter.com/gbFr6qK0ao

— Howie Hua (@howie_hua) October 29, 2021

Image Links

Clever and true
Curriculum Links: MPM2D, MFM2P
https://twitter.com/howie_hua/status/1452355822323834883?s=21

Embarrassing to admit but I actually laughed while making this math meme lol pic.twitter.com/fOpiwXhtuf

— Howie Hua (@howie_hua) October 24, 2021

You don’t have to do crazy elaborate things to engage kids and make them think. Simple tweaks are great and easy to implement.
Curriculum Tags: MPM2D, MFM2P
https://twitter.com/mrsbistro/status/1451621405058113547?s=21

Changed the way I introduced distributive property with #MTH1W today and this task is a keeper!

Inspired by @hpicciotto’s blog, I asked Ss to convince me whether each statement was true or false. They worked in groups at the boards. 1/n pic.twitter.com/kcHeDwqyon

— Andrea Biro (@mrsbistro) October 22, 2021

Interested in the history of TV. Here’s some data on the popularity of various genres I’ve time
Curriculum Tags: MDM4U
https://flowingdata.com/2021/10/26/television-genres-over-time/

How about some visual mathematical poetry? Check the link out for more
Curriculum Tags: All
https://poetrywithmathematics.blogspot.com/2021/10/visual-mathematical-poetry.html

 

Math Links for Week Ending Oct. 22nd, 2021

Featured Links

Are you teaching students about fractions? You might like this ad from A&W making fun of their legitimate marketing blunder from decades ago. Thanks to @Esping_Math for pointing this one out.
Curriculum Tags: Gr7, Gr8, MTH1W
https://twitter.com/awrestaurants/status/1450570978719932426

We’re making up for our worst “marketing fail” ever with a groundbreaking new menu item. Forget everything you know about fractions and wrap your beautiful mind and watering mouth around the A&W 3/9 lb. Burger. It’s bigger, genius. 🍔⚖️ pic.twitter.com/xaeeZj7z60

— A&W Restaurants (@awrestaurants) October 19, 2021

Resource Links

This from @CliffHunter36 is an old post but new to me. But useful if you are remediating multiplication or even looking for a math starter for higher grades to help hone their multiplication skills. And as the post says, "This is not Splat!" Splat is about solving equations, this is about multiplication. You might also like my post on array multiplication cards or @GFletchy's subitizing multiplication cards. 
Curriculum Tags: Gr7, Gr8
https://chrishunter.ca/2017/10/24/paint-splatter-arrays/

Paint Splatter Arrays from Chris Hunter

You can always count on @MathTechCoach to give us some holiday Desmos cheer
Curriculum Tags: All
https://twitter.com/MathTechCoach/status/1451903496345767941

Hey #MTBoS! Here are 2 Pumpkin Creator versions: One is color only (maybe for younger kids?) and one has draggable polygons.https://t.co/nMzJI2aJuThttps://t.co/C3J1p3BtBT pic.twitter.com/rvMvNVvX6v

— Steve Phelps (@MathTechCoach) October 23, 2021

Video Links

One of my favourite mathematical properties is the identity property. This is because it seems so simple (and maybe useless) but the idea of multiplying by 1 and getting the same answer is super powerful in so many branches of mathematics and that is because 1 can come in many forms. 
Curriculum Tags: All
https://twitter.com/howie_hua/status/1452342925308805122

(Remade a) TikTok video: a*1=a. Simple but powerful! pic.twitter.com/Sflz8YBvpM

— Howie Hua (@howie_hua) October 24, 2021

Image Links

Who knew that an emirp is a real thing?
Curriculum Tags: All
https://twitter.com/pickover/status/1449886468931993605

Mathematics.

I tend to love the number 149. You too? pic.twitter.com/OgzQ5b1zft

— Cliff Pickover (@pickover) October 17, 2021

Thanks to @Wheeler_Laura who has done many of the illustrations in @PJLiljedah's new Thinking Classrooms book, we have a nice graphic to help give us question prompts.
Curriculum Tags: All
https://mslwheeler.wordpress.com/2021/09/23/thinkingclassroom-question-prompts-graphic/

Math Links for Week Ending Oct 15th, 2021

Featured Links

It's Global Math Week this week and I think this video contest is a great way to step into it. Video submissions are being accepted until the end of the year
Curriculum Tags: All
https://twitter.com/GlobalMathProj/status/1447558294688567304

Global Math Week is off to a mighty grand start! And the fun of Global Math continues all year! Care to take part in our MATH IS__ video contest? See the details on our Events page here: https://t.co/4zz4N3Ddab@GlobalMathProj @maanow @MathCircleNet @cyfemat #iteachmath #gmw2021 pic.twitter.com/NDH3mloMMH

— The Global Math Project (@GlobalMathProj) October 11, 2021

Resource Links

I don't think you can have enough little math starters and @MathTechCoach has made many. Here's a new one. 
Curriculum Tags: All
https://twitter.com/MathTechCoach/status/1448690816059199489

Hey #MTBOS! Here is another game suitable for younger students. Can you draw a squiggly line from 1 to 25 by passing through each square only once? No diagonal paths. https://t.co/Hb984QmyNA pic.twitter.com/Pc8llWRnop

— Steve Phelps (@MathTechCoach) October 14, 2021

This 20 cube puzzle reminds me a bit of SkyScraper puzzles. None the less, another great math starter. 
Curriculum Tags: All
https://mathequalslove.net/twenty-cubes-puzzle/

This new twenty cubes puzzle is perfect for using with a set of linking cubes! https://t.co/jDYhHEPGAW #mtbos #iteachmath #puzzlingclassroom pic.twitter.com/hBV2kf4iVN

— Sarah Carter (@mathequalslove) October 11, 2021

Some additions to @NatBanting's #MenuMath site:

Curriculum Tags: Gr7, Gr8
http://natbanting.com/menu-math/

Two new #MenuMath posted. https://t.co/eqsKUDpdFS

Estimating square roots (from @KirstDy)
Line and point symmetry (from @CabezasMath)

— Nat Banting (@NatBanting) October 11, 2021

Although it looks like one student is playing another here, it's actually and overview of a game of war and your students have to figure out who won each game.
Curriculum Tags: MHF4U
https://teacher.desmos.com/activitybuilder/custom/615edc6b1c2a8f0a20b9414a

Made a few improvement to my @Desmos trig war game to practice comparing unit circle values. Includes a bit of feedback now. #MatchMyCL #ITeachMath https://t.co/362YAd7ScQ pic.twitter.com/cq1zzNL1xn

— Erick Lee HRCE Math (@TheErickLee) October 8, 2021

Video Links

Years ago I made a video that was similar to this (though not as succinct)
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1448439634787143680

New TikTok video: Integer subtraction without relying on "two negatives make a positive" pic.twitter.com/X5tbypnLfp

— Howie Hua (@howie_hua) October 14, 2021

Image Links

Someone spent a lot of time on this visualization of the popularity of individual TV episodes. Make sure you zoom in.
Curriculum Tags: MDM4U
https://flowingdata.com/2021/10/15/how-the-longest-running-shows-rated-over-episodes/

    

Math Links for Week Ending Oct. 8th, 2021

Featured Links

If you are looking for a series of lessons that hit topics like proportionality, linear relations, solving equations, visual representations and more. Of course it's got a pile of great visual representations in video form and although there are some pieces missing (eg: teacher notes) but I'm sure you can find something to use. And if you want more then become a member. You can also get a lot of the same stuff at https://mathisvisual.com/
Curriculum Tags: Gr7, Gr8, MTH1W
https://learn.makemathmoments.com/task/planting-flowers-revisited/

Resource Links

A great #mathstarter game put together from @MathTechCoach
Curriculum Tags: All
https://twitter.com/MathTechCoach/status/1445151652038815748

Enjoy this 6-pile game of NIM in @Desmos https://t.co/M5jC7dPHvW

Click on a point in any column to remove that point and all points above. Whoever removes the last point wins. The first player can guarantee a win with the correct first move. pic.twitter.com/6tG9UB854x

— Steve Phelps (@MathTechCoach) October 4, 2021

There is always something I liked about this method for analyzing inequalities (in this case quadratic)
Curriculum Tags: MHF4U
https://blog.savvas.com/using-multiple-approaches-to-a-math-question/

Today precalc ss at #WeAreChappaqua explored different methods to solve quadratic inequalities. Using different approaches is perhaps one of the best ways to reach deeper understanding 🙂😎 #MTBoS #ITeachMath #MathisFun #Maths #MathEd #MathChat #MathPlayhttps://t.co/gd3zv1wLPd pic.twitter.com/hdHkdGuTu2

— Libo Valencia (@MrValencia24) October 5, 2021

Video Links

It's interesting to finally have a real life example of how the division algorithm works
Curriculum Tags: All
https://twitter.com/howie_hua/status/1445539619798274049

New TikTok video: Making sense of the long division algorithm pic.twitter.com/6MHtKr4e4k

— Howie Hua (@howie_hua) October 6, 2021

Image Links

A nice visual on a continuum of complexity in thinking
Curriculum Tags: All
https://twitter.com/ChrisHunter36/status/1444023593306714112

#mtbos pic.twitter.com/lZjTqS7dIw

— Chris Hunter (@ChrisHunter36) October 1, 2021