Math Links for Week Ending Mar. 5th, 2021

Featured Links

I like the idea of puzzles that promote mathematical thinking. These grid puzzles do just that. These were developed by @CaroleGreenes and Tanner Wolfram. The Alge-grids has a 3x3 grid with algebraic expressions in each box. They all have the same variable, a, and the object is to fine the one value of a that gets the numbers 1-9 appear in the boxes. The Pattern-grids requires you to put 3 Xs, circles and triangles in the grid in a certain way based on the hints shown. These are the PDF digital copies of the books with over 50 puzzles in each book. 
Curriculum Tags: All
Alge-Grid
Pattern-Grid

Resource Links

I like these @openmiddle type problems and this factoring one from @MathEqualsLove is a good example. 
Curriculum Tags: MPM2D, MCR3U, MCF3M, MBF3C
https://mathequalslove.net/factoring-puzzle/

I really like this open-middle style factoring puzzle from Public Schools of North Carolina's Resources for Algebra Blackline Masters. I recreated it in both Google Slides and Jamboard. https://t.co/jfyQQOyFxv #mtbos #iteachmath #iteachalgebra pic.twitter.com/N0vrfXIDZg

— Sarah Carter (@mathequalslove) February 26, 2021

Systems of equations with balances via @Desmos
Curriculum Tags: MPM2D, MFM2P
https://teacher.desmos.com/activitybuilder/custom/5db31fdacbf6600c2fc16005?collections=5f8a43dd06b0d9a8bd84c3d0%2C5f8a442006b0d9a8bd84c3d4

Dynamic hangars! Help your students understand systems of equations using “Make Them Balance,” an activity from our new middle school math curriculum. https://t.co/2n5Q7SSMYh pic.twitter.com/ae96EOiKN2

— Desmos.com (@Desmos) February 26, 2021

Here's a great foldable to connect geography and geometry
Curriculum Tags: MPM1D, MFM1P
https://twitter.com/idm314/status/1365395922516082692

We made a foldable version of the Fuller map in our poster. Print it and build your own icosahedral globe.https://t.co/K7WtHCBPFU pic.twitter.com/Y9Dc5gBis1

— International Day of Mathematics (@idm314) February 26, 2021

Opinion Links

I think this is a great idea for assessment protocols. It should certainly take away some anxiety. 
Curriculum Tags: All
https://twitter.com/wheeler_laura/status/1366566694110519296

My first step in this direction was to use @howie_hua's strategy of reading the test over as a group. Then w/o pencils or calculators they get 5 mins to go talk to anyone they'd like. After 5 mins everyone comes back to their seat & writes test individually. #ThinkingClassroom https://t.co/wVrkQA1OEl

— Laura Wheeler (@wheeler_laura) March 2, 2021

Video Links

PiDay is coming up
Curriculum Tags: All
https://www.youtube.com/watch?v=BdHFLfv-ThQ

Image Links

Do you have enough geometric skills to figure this out?
Curriculum Tags: MPM1D, MFM1P
https://twitter.com/panlepan/status/1364891666457522176

The octagon that thinks it's David Bowie.
What fraction of this regular octagon is coloured in red ?#GeometrySnacks #ShowYourWork #WFIS pic.twitter.com/UwrRkL0qoR

— Vincent Pantal🍩ni (@panlepan) February 25, 2021

How pointy is your angle? A math pickup line, perhaps?
Curriculum Tags: MPM1D, MFM1P
https://twitter.com/jamestanton/status/1366387133934489600

The "pointiness" of an angle of measure x degrees is
(180-x)/180.
Eg a straight angle is flat & has 0 pointiness. A small angle is sharp & has pointiness close to 1. The total pointiness of a polygon is the sum of the pointinesses of all its corners. What do you notice? pic.twitter.com/dw11LdFjUD

— James Tanton (@jamestanton) March 1, 2021

There is math all around us. You just have to notice it
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1366952230620852225

Clearly we really like these chips at my house. Three different people bought three different sized bags today. There is a math problem here somewhere #MathChat #MTBoS #iTeachMath pic.twitter.com/S2OxZ90nuP

— David Petro (@davidpetro314) March 3, 2021