Math Links for Week Ending May 28th, 2021

Featured Links 

I love how we can take a mistake that kids often make (adding across with fractions) and make a real thing. I also like the idea of taking a mistake a student makes and turning it into something correct. In this case Farey means. 
Curriculum Tags: Gr7, Gr8
https://twitter.com/howie_hua/status/1395802373252026369

New TikTok video: What happens if we add fractions across? pic.twitter.com/RDfU7AHYKL

— Howie Hua (@howie_hua) May 21, 2021

Resource Links 

I like this @Desmos activity about nets that basically asks " is this a net?"
Curriculum Tags: Gr7, Gr8
https://twitter.com/kate_selkirk/status/1394329165936136192

Can't stop. Won't stop. Another @desmos activity... this time featuring #nets #math #mtbos #iteachmath There a videos revealing answers that are hidden until a kid writes a verbal explanation.
Check out this @Desmos activity: Nets 1 ~ Day 144! https://t.co/vtz8DNLdTr

— Kate Selkirk-Litman (@kate_selkirk) May 17, 2021

Right now most of the @OnMathies apps are down since they were all built with Flash. But the Mathies team has funding from the ministry to rebuild these apps in HTML5. You can check out the beta version of the colour tiles app here:
Curriculum Tags: All
https://twitter.com/ONmathies/status/1397994513310830599

mathies Colour Tiles, Money and Fraction Strips are in development for HTML 5 - see https://t.co/cH5bt3Bpda Use the i button's Feedback Form link to report bugs, feature requests etc. Will be ready by the end of September. pic.twitter.com/Z4qoEgVVRM

— mathies.ca (@ONmathies) May 27, 2021

Video Links 

The classic grains of rice on a chessboard problem. Great for talking about powers
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://twitter.com/onlinekyne/status/1393243039531823104

Grains on a chessboard problem! pic.twitter.com/yK8xbHtYfB

— Kyne (@onlinekyne) May 14, 2021

Is there symmetry here or not?
Curriculum Tags: All
https://twitter.com/MagicPi2/status/1394391471533576193

Equilateral triangle to square dissection#mtbos #iteachmath #Math #maths pic.twitter.com/aZmJLBJ5cS

— Idan Tal (@MagicPi2) May 17, 2021

Are you working with geometric theorems? Add this to the list
Curriculum Tags: All

https://twitter.com/74WTungsteno/status/1396708335014064130

Ptolemy's Theorem:
For a cyclic quadrilateral, the sum of the products of the two pairs of opposite sides equals the product of the diagonalshttps://t.co/laij3IquP2#math #science #iteachmath #mtbos #visualization #elearning #geometry pic.twitter.com/sfqZR50Yfi

— Tungsteno (@74WTungsteno) May 24, 2021

I like giving students real applications of using math and specifically show them that real people use math to solve problems. In this video from @EngineeringExplained he goes through several equations to figure out things like the mass of a Tesla. You don't necessarily have to watch the whole video but, I think, it's still pretty interesting too. 
Curriculum Tags: Gr7, Gr8
https://www.youtube.com/watch?v=4PRi4B1APj0

Image Links 

This may seem like an image but click inside and press play for a cool surprise about curved surfaces.
Curriculum Tags: All
https://twitter.com/nhoskee/status/1395032216791445506

A @desmos interpretation of a piece by @yokoono https://t.co/Ijcfhpx3ZZ

— Chris Nho (@nhoskee) May 19, 2021

Math Links for Week Ending May 21st, 2021

This week was the OAME 2021 Virtual conference so a slightly different format than normal. Here are a bunch links to resources from some of the sessions that I attended. I will probably have more next week as I watch the recordings of the sessions that I couldn't attend live but here's a sampling of what I saw. 

Featured Session 

If you are looking for resources on social justice then @RoberQBerry has your back
Curriculum Tags: All
https://padlet.com/rqb3e/sjmathresources

Such an awesome list of #SocialJustice resources for #math from @robertqberry in this @padlet that he referenced in his #OAME2021 Keynote tonight. Check it out here:https://t.co/JvPxYRrgnC#MathChat #MTBoS #iTeachMath pic.twitter.com/mKsP5Tmi27

— David Petro (@davidpetro314) May 19, 2021

Other Sessions 

Using Social Media with Students
Curriculum Tags: All
http://bit.ly/OAMEMathSocialMedia

Starting off #OAME2021 talking about Using Social Media with Students via @willgourley @mfrank_76 @ElliWeisdorf

http//bit.ly/OAMEMathSocialMedia#MathChat #MTBoS #iTeachMath pic.twitter.com/P8k1vDkdnU

— David Petro (@davidpetro314) May 17, 2021

It was @DDMeyer that did the first keynote and I really liked this quote (among others)
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1394423718558932998

Love this from @ddmeyer's Math Without Mistakes keynote at #OAME2021

"So forget all the checks on the page that show all the the things that were wrong. Circle all the things that were really interesting that young people can do." -@meganlfranke#MathChat #MTBoS #iTeachMath pic.twitter.com/74DaRmxBxH

— David Petro (@davidpetro314) May 17, 2021

Creating a Markless Classroom
Curriculum Tags: All
https://drive.google.com/drive/folders/1_0hDOb3kjK06xiN9y2c3J0q1PtQ-fFT6?usp=sharing

Saw a great session from @math_mom13 & @Carmenmathmusic on Creating a Markless Classroom at #OAME2021. Conference goers can see their session in the archive until Jun 11. For everyone else here are reasons to do it & examples of student & parent voice#MathChat #MTBoS #iTeachMath pic.twitter.com/hP2jkSGmJf

— David Petro (@davidpetro314) May 18, 2021

My Prerecorded session on Using Desmos Challenge Creator
Curriculum Tags: All
http://bit.ly/oame-petro

My prerecorded #OAME2021 session on @Desmos Challenge Creator went live yesterday for all conference attendees. Learn how to run activities where students create their own problems. The slide deck is available to anyone here:https://t.co/nNbJ0nTE1E#MathChat #MTBoS #iTeachMath pic.twitter.com/V0Pgby8GzN

— David Petro (@davidpetro314) May 18, 2021

I copresented a session with @Virgonomic on Using CODAP
Curriculum Tags: MDM4U
http://bit.ly/oame-petro

I just finished co-presenting a session on @CODAPdatasci dynamic stats with @virgonomic at #OAME2021. The recording will be available to conference goers in a day or two and our slide deck is available to all right herehttps://t.co/nNbJ0nTE1E#MathChat #MTBoS #iTeachMath pic.twitter.com/dqD473BNvk

— David Petro (@davidpetro314) May 18, 2021

If you have never done a math walk with your students, you should. Ron Lancaster originally planned to do this live via remote but because of lockdown he couldn't 
Curriculum Tags: All
http://tinyurl.com/CNEMATHWALK

#OAME2021 conference goers, don't forget you can watch session once they are done by clicking All Available Recordings in MCIS. I watched Ron Lancaster's CNE mathwalk & it was great. Here's slide deck for anyone who wants it https://t.co/mMQvMSE4eI#MathChat #MTBoS #iTeachMath pic.twitter.com/1WM61harR3

— David Petro (@davidpetro314) May 19, 2021

Authentic Assessment in Math
Curriculum Tags: All
http://bit.ly/2021OAME

So many good ideas seen while in @angjeli4math's #OAME2021 session Exploring Authentic Online Assessments in Math that would also work in Face2Face. Check out her slide deck which includes many of the resources and ideas:https://t.co/q6BgONrj74#MathChat #MTBoS #iTeachMath pic.twitter.com/5a92rJ7mxT

— David Petro (@davidpetro314) May 20, 2021

The last session I presented was on using fraction strips to conceptualize fraction operations
Curriculum Tags: Gr7, Gr8
https://bit.ly/oame-petro

I just finished presenting my #OAME2021 session on using fraction strips to conceptualize the 4 operations (+-x÷) using @mathigon #polypad instead of physical manipulatives (from @Spectrum_Nasco) Get the full slide deck here:https://t.co/nNbJ0nTE1E#MathChat #MTBoS #iTeachMath pic.twitter.com/brb9WHBDAO

— David Petro (@davidpetro314) May 21, 2021

Integers: Beyond the Rules
Curriculum Tags: Gr7, Gr8
https://docs.google.com/presentation/d/1-u_Ant3u3K_dbmB3hWVn7QodhigU1CfJXGw66aaOGhw/edit#slide=id.gd79eefb42a_0_41

I dare you to not find at least one strategy/activity that you can use tomorrow in @HTheijsmeijer's #OAME2021 session Integers: Beyond the Rules. Check out the slide deck here:https://t.co/FchYW1xAnv#MathChat #MTBoS #iTeachMath pic.twitter.com/Q86WZuRx5z

— David Petro (@davidpetro314) May 21, 2021

Grade 7 Coding Expectations Using Scratch
Gr7
https://docs.google.com/presentation/d/1FpC1jBThEwtQCcU8VJZlcI-iQLpMCVH_Autq0Ik0Hhc/edit#slide=id.gb460a75d28_0_6 

Even though this #OAME2021 session from @te_bokkel & @imtiazdamji focused on Gr7 coding, there are videos and @scratch sample code for gr1-8 referenced in the slide deck too. Check it out: https://t.co/z7geOnCdLV#MathChat #MTBoS #iTeachMath pic.twitter.com/XvolpfhciL

— David Petro (@davidpetro314) May 21, 2021

You can always be sure that @MathGuyLuoma will pack his session with stuff you can take away and use tomorrow. 
Curriculum Tags: All
https://bit.ly/greatmathresources

A metric ton of Math and Teaching Resources from my OAME presentation yesterday: https://t.co/GWtrabf3uF
Enjoy! pic.twitter.com/5Vq0Wk31Bb

— Mathguy Luoma (@MathguyLuoma) May 21, 2021

I am embarrassed that I didn't know about @DrEugeniaCheng's WSJ column Everyday Math
Curriculum Tags: All
https://www.wsj.com/news/author/eugenia-cheng

Currently listening to our #OAME2021 Friday evening keynote from @DrEugeniaCheng on Inclusion-Exclusion in Math. Sorry if you're missing it but in the mean time you should check out her #EverydayMath columns in the @WSJ https://t.co/JpjseuT8tx#MathChat #MTBoS #iTeachMath pic.twitter.com/dctwbLGVAY

— David Petro (@davidpetro314) May 21, 2021

During @DrEugeniaCheng's keynote I thought this quote from her art students was spot on 
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1395873225876385794 

I LOVE this quote from @DrEugeniaCheng in her #OAME2021 keynote. Her art student's (who are taking her math course) realization:

"Now I find that math is not just a tool, and the real reason for learning math is to practice our thinking"#MathChat #MTBos #iTeachMath #OAME2021 pic.twitter.com/4qHOkkuY86

— David Petro (@davidpetro314) May 21, 2021

Math Links for Week Ending May14th, 2021

Featured Links

I feel like I have mentioned public-math.org but as I look through posts, it turns out, no. Plus I haven't mentioned about the Math Teacher Lounge (podcast/video series?) in a while so why not kill two birds with one stone. Watch the latest episode and check out the Public Math website for cool math ideas. 
Curriculum Tags: All
https://www.public-math.org/

Resource Links

Are you looking for a way to hone your CL programming skills then you may be interested in this online course. 
Curriculum Tags: All
https://twitter.com/Desmos/status/1390430834407002113

We heard you folks are interested in a course for advanced activity building in Desmos so we're setting one up!

👉 dynamic screens
👉 interactive components
👉 informative dashboards

We'll build all of that and community! Interested? Let us know. 👇https://t.co/ayhiSVXWZR

— Desmos.com (@Desmos) May 6, 2021

Some nice Geogebra sketches from @TimBrzezinski on properties of quadratic functions. 
Curriculum Tags: MPM2D, MCR3U, MCF3M, MBF3C
https://twitter.com/TimBrzezinski/status/1390382530642198532

Quadratic function explorers with Qs: https://t.co/L0HMZWRvxC & https://t.co/A3Th6yVtSf & https://t.co/Iji2RWvxto. @geogebra #MTBoS #ITeachMath #math #algebra #alg1chat pic.twitter.com/J5XSrpnocR

— Tim Brzezinski (@TimBrzezinski) May 6, 2021

Nicely done by @MSBJacobs, this application of Mathigon's Polypad looks fun.
Curriculum Tags: All
https://twitter.com/msbjacobs/status/1391839646221488130

I've just adapted the Pentomino Sums task for polypad on @mathigon. Feel free to use and share.https://t.co/5TWzd4TJT8
What do you think?

— Michael Jacobs (@msbjacobs) May 10, 2021

Video Links

I love it when, seemingly, simple games have complex math behind them.
Curriculum Tags: MDM4U
https://youtu.be/VTDKqW_GLkw

It's @StandupMaths again with a nice little story about using math to beat a gameshow. Plus I am partial to stories about randomness (or in this case, the lack of randomness)
Curriculum Tags: All

https://twitter.com/standupmaths/status/1392098404927430660

I had a great time talking about 'The Time When “Press Your Luck” Didn’t Require Much Luck'. An amazing story of when randomness wasn't sufficiently random. https://t.co/i7VU09AMkM

— Matt Parker (@standupmaths) May 11, 2021

Are you looking for a fun context to explore dealing with quadratic relations, then why not check out this video
Curriculum Tags: MCR3U, MCF3M, MAP4C
https://www.youtube.com/watch?v=eFEj5HyLi0o

Here's a fun @Desmos animation

Curriculum Tags:All

https://twitter.com/ddmeyer/status/1392879875095072771

🏆 The Academy Award for Best Illustration That a Graph Is Really Just a Bunch of Points goes to Robert Banks IV over at the Desmos Educators Facebook Group. Shut the award down, actually. Play around: https://t.co/eSui7fpe63 (Robert Banks IV on Facebook.) pic.twitter.com/Z0mWMHd8oX

— Dan Meyer (@ddmeyer) May 13, 2021

Image Links

I love this set of data that @DavidKButlerUoA has put together. So friendly and great to start any conversation about data. The representation of the categorical data with the pictures is a nice touch. Check out the comments for the .csv file of the raw data and the pdf version of the cards. 
Curriculum Tags: Gr7, Gr8, MDM4U, MBF3C, MAP4C
https://twitter.com/DavidKButlerUoA/status/1393116987979567112

I've just designed a new set of data cards for use in stats workshops, especially with Health Science students. I'm very proud of them. pic.twitter.com/68Nzfo14aM

— David Butler (@DavidKButlerUoA) May 14, 2021

Math Links for Week Ending May 7th, 2021

Featured Links 

Looking for some tasks for grade 3-10? Fractions, proportions, volume, estimation and more. All in multiple day formats. Check out the @MakeMathMoments site. 
Curriculum Tags: All
https://learn.makemathmoments.com/tasks/

Resource Links 

A recent blog post on Flowing Data on Steph Curry's recent 3 point streak reminds me of all the data related stuff on this site. Especially if you want examples of types of graphs, at the bottom of each post is a link to collections of similar types of graphs. 
Curriculum Tags: MDM4U
https://flowingdata.com/2021/05/03/stephen-currys-record-setting-month-for-shooting-threes/

Video Links 

Who knew symmetry could be so trippy?
Curiculum Tags: All
https://twitter.com/junkiyoshi/status/1390268312760717316

Symmetry. Source code -> https://t.co/iXQgLoZtGM #openframeworks #programming #creativecoding #プログラミング pic.twitter.com/idyqeviJ9W

— JunKiyoshi (@junkiyoshi) May 6, 2021

Image Links 

I am liking Mathigon's Polypad more and more. Here we have a tessellation from @MarkChubb3
Curriculum Tags: All
https://twitter.com/MarkChubb3/status/1388686379455066118 

Tiling using Tantrix tiles.
Can you spot what repeats?@MathigonOrg pic.twitter.com/YyDBKtNJRB

— Mark Chubb (@MarkChubb3) May 2, 2021

It's always good to have another probability problem in your back pocket
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://twitter.com/jamestanton/status/1389573288192483331

(Inspired by thinking from Dick Hess ) Two dots from the square shown are chosen at random. What is probability they are the same color? Does the size of the square matter? pic.twitter.com/WeTNsf6Ln6

— James Tanton (@jamestanton) May 4, 2021

It was Star Wars day this past week so here's some data. It seems like George Lucas was maybe a bit lax in the dialogue department. 
Curriculum Tags: Gr7, Gr8, MDM4U
https://twitter.com/neilrkaye/status/1389607247031021572

May the fourth be with you! Who has the most lines in the original Star Wars trilogy and what are their 20 top words?#dataviz #MayThe4thBeWithYou #MayTheFourthBeWithYou pic.twitter.com/WarvwX2XOf

— Neil Kaye (@neilrkaye) May 4, 2021