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