Friday, March 24, 2017

Math Links for Week Ending Mar. 24th, 2017

I'm getting caught up on a lot of blog posts lately and the Desmos crew have been busy. Some neat little activities have been released over the last few weeks. You can practice working with angles in this laser/mirror simulation. Practice with linear functions (kind of like Central Park) by starting with estimation. Do some exponential decay by bouncing balls. And more linear expressions with this interactive border problem.
Curriculum Tags: MPM1D, MFM1P, Gr7, Gr8, MCR3U, MAP4C
http://blog.desmos.com/post/157371596612/friday-fave-for-february-17
http://blog.desmos.com/post/157668916512/friday-fave-for-february-24
http://blog.desmos.com/post/158244468172/friday-fave-for-march-10
http://blog.desmos.com/post/158522882937/friday-fave-for-march-17

A few weeks ago I posted Dan Finkel's TED talk about being a math teacher. It featured a really cool factor model. It turns out I missed this other factor model that @dpscher featured another cool model and added some interactives and a how to video to go along with it.
Curriculum Tags: Gr7, Gr8
http://www.sineofthetimes.org/creating-animated-factorization-diagrams/


Here's a really cool interactive from @EmathsUK on rates of change where you have to create your own custom flask and then guess what the filling profile will look like. It's different version of this classic question than Desmos' Waterline but still a great activity.
Curriculum Tags: MCV4U
http://manipulatives.completemaths.com/flasks/




I like this combination Google slides primer and how to develop thinking in a math classroom from @alicekeeler. I really like the idea of showing the thinking process including all of the mistakes. Take a look
Curriculum Tags: All
http://alicekeeler.com/2017/01/23/google-math-join-me-in-my-thinking/







Some leftovers from PiDay. This one from @mathequalslove giving us this geometric puzzle
Curriculum Tags: All
http://mathequalslove.blogspot.ca/2017/03/square-pi-puzzle-for-pi-day.html







Another PiDay leftover from @rjallain. This time by using a random walk. He goes into all the detail with algorithms and the graphical analysis.
Curriculum Tags: All
https://www.wired.com/2017/03/hey-can-find-pi-random-walk-heres/




And the last leftover from PiDay comes from the Physics Girl and Veritasium. Here they calculate Pi by throwing darts at a target. Again, more randomness. Watch the video at the link below
Curriculum Tags: All
http://thekidshouldseethis.com/post/calculating-pi-%CF%80-with-darts

It all starts with counting. Before we can do any math we have to count. That is part of the premiss of the book "Numbers and the Making of Us: Counting and the Course of Human Cultures" from Caleb Everett. Here is an interview with the author about the topic.
Curriculum Tags: All
https://fivethirtyeight.com/features/why-do-we-count/

Here is a nice interview with @mathletepearce from @DerekRhodenizer on the current state of math teaching. I liked the bit about if you were in a home where your parents yelled, then likely you will be a yelling parent until you become mindful of how to break that pattern. For many of us that's what teaching is. We teach how we were taught until we see a better way
Curriculum Tags: All
http://voiced.ca/beyond-the-staffroom/


I like this visualization from @mathletepearce on visualizing x/6 = 2
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://www.youtube.com/watch?v=YbAuXpnZl3c


A new @numberphile video on Pascal's Triangle. Even though many of the patterns mentioned I knew of there were a few tidbits that I hadn't.
Curriculum Tags: All
https://www.youtube.com/watch?v=0iMtlus-afo

And another one from @numberphile on the four colour theorem. I love the four colour theorem and especially because it's proof marked the beginning mathematical proofs via computer.
Curriculum Tags: All
https://www.youtube.com/watch?v=NgbK43jB4rQ

A new TED talk from @JoeBoaler on mathematical mindsets
Curriculum Tags: All
https://www.youtube.com/watch?v=al6gO9SLqBY

An interview by @Anthony_Bonato with @JSEllenberg who wrote the book "How Not To Be Wrong: The Power of Mathematical Thinking" and if you want you can watch this talk from a couple of years ago
Curriculum Tags: All
https://anthonybonato.com/2017/03/22/interview-with-a-mathematician-jordan-ellenberg/
https://www.youtube.com/watch?v=kZTKuMBJP7Y


The Giant's Causway is a fabulous example of how nature has many strange secrets. So cool that these hexagonal rock formations were create naturally. Check out all the pictures at the link below.
Curriculum Tags: All
http://geometrymatters.tumblr.com/post/158582569164/the-giants-causeway-the-hexagonal-rock-columns


Who knew there were so many types of quadrilaterals
Curriculum Tags: Gr8
https://twitter.com/pickover/status/843282696260521986

Here's a neat visualization of the top 100 websites currently
Curriculum Tags: MDM4U
http://www.visualcapitalist.com/wp-content/uploads/2017/03/top-100-websites.html

Here's a few more images left over from Pi Day
Curriculum Tags: All
https://twitter.com/alexbellos/status/841546491361607680
https://twitter.com/MrRoeschIsMath/status/841610532771766272
https://twitter.com/DataIsBeautiful/status/841916181762174976


Friday, March 17, 2017

Math Links for Week Ending Mar. 17th, 2017

I have loved Desmos Activity builder since it came out. Over the last year or so I have taken a stab at creating a bunch of these. They run the gamut of some geometry stuff from grade 6 to Calculus and in between. Try them out and let me know if you see room for improvement.
Curriculum Tags: All
http://engaging-math.blogspot.ca/p/desmos-activities_10.html

I love when things are made visual (and interactive). This site does both, although some of the concepts go beyond elementary and secondary math, there is enough here that you can still find something to bring statistics to life for your kids. Thanks to @Sharon_Drummond for this one.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U, MAP4C
http://students.brown.edu/seeing-theory/

How about a fun clock that requires you do do math (order of operations) to tell the time? Thanks to @kMarkPet for this one.
Curriculum Tags: All
http://nerdist.com/this-awesome-clock-makes-you-do-math-to-figure-out-the-time/


It was PiDay this week. You can see all of my Pi related links on my PiDay Pinterest board here. Here's a few more. This one from Science Friday.
Curriculum Tags: All
https://sciencefriday.com/spotlights/pi-day/

I made this video to explain how to make your own Desmos Marbleslides.
Curriculum Tags: All
https://www.youtube.com/watch?v=c9R6_Pt-ktY

My daughter pointed these out to me. They are a series of videos where they survey 100 people (usually they were made of demographically diverse groups) about various topics and ask them to choose yes or no by stepping into a circle. A lot of the questions are US centric (but not all). But you might be able to use them to talk about surveying and bias. Click on the link below for all of the videos in the first season.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U, MAP4C
https://www.youtube.com/watch?v=qAQt0ICZAr8&list=PLJic7bfGlo3q0xD2Baw3jCHlt1blXkigp&index=1

I love this video from @standupmaths where he approximates Pi by randomly rolling two 120 side dice 500 times and breaking them up into numbers that have cofactors and those that don't (and if you want here's the 2hrs of raw footage). You could easily repeat this in a class and wrap it around the idea of factors of numbers. So good.
Curriculum Tags: All
https://www.youtube.com/watch?v=RZBhSi_PwHU

Here's a video for PiDay on why Pi is important. As if we need to know.
Curriculum Tags: All
https://www.youtube.com/watch?v=RpWFli2Iz9E

And what is PiDay without a song
Curriculum Tags:All
https://www.youtube.com/watch?v=e11W7EzoivE

Although they admitted to this being Photoshopped, it's still nicely done.
Curriculum Tags: All
https://twitter.com/Rockies/status/841717552795418624
If you wanted you cold have run a virtual 5km race on Pi Day. I guess that means you register and pledge to run 5km on PiDay and they send you a medal. At least the medal is very cool. Thanks @Robin_Grondin for this one.
Curriculum Tags: All
https://www.virtualpaceseries.com/portfolio-item/pi-day-3-14/


And finally a Pi related question with what has a surprising (at least to me) result. Thanks to @Esping_math for this one.
Curriculum Tags: Gr8
https://www.facebook.com/Mathhappiness/photos/a.170688796611683.1073741829.101136273566936/438568976490329/?type=3&theater


Friday, March 10, 2017

Math Links for Week Ending Mar. 10th, 2017

If you haven't been following @marybourassa's venture into a full thinking calculus classroom, she just posted her first full unit which was on derivative rules. Keep following her if you are looking to make your calculus class a thinking classroom too.
Curriculum Tags: MCV4U
http://marybourassa.blogspot.ca/2017/03/full-unit-in-thinking-classroom.html
This is kind of neat. This restaurant puts the calories, protein, fat and carbohydrates for exactly what you ate on your bill. You could do some fun proportional reasoning with this. Thanks to Janet Jacques for this one.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P, MAT1L
http://www.mediapost.com/publications/article/128527/burgerville-receipts-provide-orders-nutrition-inf.html?edition=





I just finished this Desmos activity on position-velocity-acceleration functions. The reason I did it this way was because I always felt that students often didn't get that this was motion in a straight line. So it was nice to be able to show the motion explicitly.
Curriculum Tags: MCV4U
https://teacher.desmos.com/activitybuilder/custom/572c3338d7cb120b107985d5


This past week we had International Women's Day. So it is appropriate to have at least one article to commemorate it.
Curriculum Tags: All
https://www.quantamagazine.org/20170308-women-math-physics/

I don't think we can have enough stories and essays about loving math. Here's one from @mathgarden
Curriculum Tags: All
https://medium.com/@sunilsingh_42118/teaching-mathematics-with-love-intimacy-and-storytelling-497ec8e61ccb#.32ht0gpro

We've just done some PD at our board about formative assessment and we used some of Damian Cooper's stuff. Here @MarkChubb3 talks about a lot of what Cooper says along with some @marian_small and @JoeBoaler too. I love the first analogy that he relays from cooper about what made the biggest difference for figure skaters at the Olympics, the coaches or the judges. I'll let you read on in his post to find out.
Curriculum Tags: All
https://buildingmathematicians.wordpress.com/2017/02/25/who-makes-the-biggest-difference/

The link above about the calories on the restaurant bill reminded me of this @mathalicious video from a few years back.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://www.youtube.com/watch?v=V99yblhzXEA

I love this visualizations of powers of ten from @gfletchy
Curriculum Tags: Gr7, Gr8
https://twitter.com/gfletchy/status/837745388438306818
A couple from @DataIsBeautiful. The first is a bar graph of the fastest animals
Curriculum Tags: Gr7, Gr8,
https://twitter.com/DataIsBeautiful/status/838106104525643776
The next one is a for you classic gamers out there with this data about the game Civilization.
Curriculum Tags: Gr7, Gr8
https://twitter.com/DataIsBeautiful/status/838106111429459968



Friday, March 3, 2017

Math Links for Week Ending Mar. 3rd, 2017

Recently @pgliljedahl spoke to teachers in the Ottawa area and I saw some recaps show up on Twitter. For a detailed recap, don't miss @mathtans' play by play of the whole talk. I specifically like the beginning with the descriptions of the slow start with using vertical surfaces. Also @Laura_Wheeler managed a couple of sketchnotes too. We have been working on making thinking classrooms down here to so it was great to see these resources.
Curriculum Tags: All
https://mathiex.blogspot.ca/2017/02/feb-pd-peter-liljedahl.html
https://mslwheeler.wordpress.com/2017/02/27/studenting-visibly-random-groups-sketchnotes-thinkingclassroom/


I love it when you go deep on a topic. In this case it's optimizing cans from @DataGenetics. With some of the data here you could probably connect it to grade 9 optimization but they go deeper and take it all the way to the calculus level. And as a bonus, here's a discussion of reasons why packaging is the way it is. Thanks to Janet Jacques for this one.
Curriculum Tags: MCV4U, MPM1D, MFM1P
http://www.datagenetics.com/blog/august12014/index.html

If you are in Ontario you've heard of the Renewed Math Strategy. Well, they have a new website for all kinds of math goodies. Check it out.
Curriculum Tags: All
http://rms.thelearningexchange.ca/

Having done a couple of Ignites myself, I am always happy to highlight a good one. It's from a couple of years ago but I hadn't seen it before. I like this one from @robertkaplinsky on productive struggle. It's always hard to get everything you want said when the slides are flying by at 15s a pop but he does a good job of highlighting the important points. I have used the bench press analogy myself many times.
Curriculum Tags: All
http://robertkaplinsky.com/my-ignite-talk-on-productive-struggle/

And when that video came up, another of my favourite speakers did. Here is @Marian_Small from the same session
Curriculum Tags: All
https://www.youtube.com/watch?v=Wbl2kzWcYt8

A new three act task from @mathletepearce using a great image to provoke questions. Good for multiplication and proportional reasoning.
Curriculum Tags: Gr7, Gr8, MFM1P, MPM1D
https://tapintoteenminds.com/3act-math/donut-delight/

Some neat geometric architecture pointed out by @MrHonner
Curriculum Tags: Gr7, Gr8
http://mrhonner.com/archives/17508