Friday, March 16, 2018

Math Links for Week Ending Mar. 16th, 2018

 What's Going on With This Graph? That is a new(ish) feature of the NYTimes. It's been running since September and on the second Tuesday of each month (from September until May) they pick a graph that they've used and ask student's what they notice and wonder (and other questions). The student's interact via moderated chat (@MFAnnie did the moderation this week) with answers revealed on the Thursday of the same week. You can see all the previous instalments at the link below. Get your kids to check them out and interact.
Curriculum Tags: MBF3C, MAP4C, MDM4U
https://www.nytimes.com/column/whats-going-on-in-this-graph

It was Pi Day this week. Here is a link to my page of over 80 links that I've collected over the years. Save it for next year.
Curriculum Tags: All
http://davidpetro.org/PiDay.htm

He was clearly getting ready for PiDay with this 3Act task when @mathletepearce put this one together. How many tiles around the circle?
Curriculum Tags: Gr8, MPM1D, MFM1P
https://tapintoteenminds.com/3act-math/tile-circle/


I recorded a guest spot on the 10 Minute Teacher podcast (from @coolcatteacher) this week. Up until a week ago I had not heard of it but since, I have caught up on a bunch of episodes. They are not always math related but they are always full of teacher tips. For example, check out the link below from @aap03102 who talked about how he celebrates Pi Day in an epic way (seriously, he does some cool stuff). Listen to his episode at the link below and check out the rest of the math related episodes but clicking on the Podcast tab above.
Curriculum Tags: All
http://www.coolcatteacher.com/epic-ways-celebrate-pi-day/


For PiDay this week @Story_Collider had two math related stories. The first is a story of what inspired a reluctant mathematician Ken Ono (one of the producers of the movie "The Man Who Knew Infinity"). The second is a powerful story of racial and gender discrimination in the math community and elsewhere from @pwr2dppl. And if that is not enough, check out her thesis. It's written in a way that I have never seen a math/science thesis written. This quote from the prologue should pique your interest: "....try to read a math paper and think, “Oh my goodness what on earth does any of this mean why can’t they just say what they mean????”"
Curriculum Tags: All
https://www.storycollider.org/stories/2018/3/5/in-honor-of-pi-day-stories-about-math

Here's a nice little websketch from @DpScher on placing fractions on a number line. It encourages trial and error and has a randomizing feature so that your students can practice. Watch the "how to" video to see how to use the bank of numbers on the sketch.
Curriculum Tags: Gr7, Gr8
http://www.sineofthetimes.org/deducing-the-mystery-fraction/

Check out this sweet dynamic model of the area of a circle
Curriculum Tags: Gr8, MPM1D, MFM1P
https://twitter.com/von_Oy/status/972274266963050496


A couple of nice Geogebra sketches from @dynamic_math. This first one randomly generates a linear equation (in standard form) and asks students to drag points to represent the equation's line.
Curriculum Tags: MPM1D, MFM2P
https://www.geogebra.org/m/s5CmNkbb
The second one is a neat little sketch to have students solidify their understanding of trig ratios.
Curriculum Tags: MPM2D, MFM2P
https://www.geogebra.org/m/F5a9GDd6


After listening to the above podcast, I found this video from Ken Ono on Pi showing an expansion of Pi I hadn't seen before. Note at the end, it's not a mistake but a notation of adding fractions within fractions.
Curriculum Tags: All
https://www.youtube.com/watch?v=CwSbX0CW9hA

You can't have enough geometry based synchronized dancing
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://www.youtube.com/watch?v=dT0Z_KCPYYY


You can't have enough Pi based cartoons
Curriculum Tags: All


Some fun stuff on this math based Tumblr like this circular analysis of the Twitter logo. But go to the link to see all the good stuff
Curriculum Tags: All
http://curiosamathematica.tumblr.com/


Some subtle calculus humour for you. Thanks to @MathHombre for pointing this one out.
Curriculum Tags: MCV4U
https://twitter.com/BryanPenfound/status/974038384980078592

Here's a fun visualization connecting chaos to order
Curriculum Tags: All
https://twitter.com/Rainmaker1973/status/973820123684528130

A prom proposal via @Desmos? Yup
Curriculum Tags: All
https://twitter.com/jedediyah/status/974296656211533824


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