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 visual argument for the area of a circle using @Desmos. A copy of something @dynamic_math built in @geogebra. Thanks, Tim, for the beautiful illustration! This was fun to make! https://t.co/s0Uj893UcF— Suzanne von Oy (@von_Oy) March 10, 2018

Tim's version: https://t.co/5kdutO5cpS#mathchat #iteachmath #mtbos pic.twitter.com/nixHV2ssK1

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.More quick (5 min or less) #formative #assessment w/@geogebra: Graphing & analyzing linear equations written in Standard Form: https://t.co/vcL9aDV4Rq & https://t.co/eNxa2OHt3W. @dormanmath @AMTNYS @ATOMICMath @ATMIM_Updates #MTBoS #ITeachMath #algebra1 #alg1 #MSMath #HSMath pic.twitter.com/booAmbV7Zq— Tim Brzezinski (@dynamic_math) March 15, 2018

Curriculum Tags: MPM2D, MFM2P

https://www.geogebra.org/m/F5a9GDd6

#Trig #Ratio Estimations: If Ss have no clue as to how to answer any 1 of these Q's, how effective (or even better: NOT effective) is a mere "SOH-CAH-TOA" approach WRT conceptual understanding? https://t.co/qgHWQtCjD1 @geogebra @dormanmath #MTBoS #ITeachMath #HSMath #geometry pic.twitter.com/zZgPKRKsUW— Tim Brzezinski (@dynamic_math) March 16, 2018

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

— Denise Schroh Fisher (@Denise13F) March 14, 2018

Happy #PiDay!! pic.twitter.com/TgZ84imSNl— Adrienne Green (@adrienneABC2) March 14, 2018

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

To all my #calculus teacher friends. What function was the original book-giver? #mtbos #iteachmath pic.twitter.com/21bkzYwBr6— Bryan Penfound 🌐 (@BryanPenfound) March 14, 2018

Here's a fun visualization connecting chaos to order

Curriculum Tags: All

https://twitter.com/Rainmaker1973/status/973820123684528130

Where we see chaos, sometimes there is not https://t.co/uNWILjYvrK pic.twitter.com/35BBJnocrc— Massimo (@Rainmaker1973) March 14, 2018

A prom proposal via @Desmos? Yup

Curriculum Tags: All

https://twitter.com/jedediyah/status/974296656211533824

Monitoring students on @Desmos Polygraph when... pic.twitter.com/THqMo5RUya— Jed (@jedediyah) March 15, 2018