Friday, June 21, 2019

Math Links for Week Ending Jun. 21st, 2019

Featured Links
I always love when @AlexOverwijk shows these time lapse videos of his classroom. In this case, it's the final exam for Calculus. Part of the exam was done in groups (on VNPS) and the rest was individual. I know that people like the idea of these collaborative classes, but often abandon those ideas for more traditional experiences once students get to the higher grades. So it is great to see that students can thrive and succeed in these senior math classes with these more progressive types of assessments.
Curriculum Tags: MCV4U, All
Resource Links
Do you want a wealth of fraction resources that conceptualize the ideas of what fractions are all the way from their meaning and representations to operations. All research based and well documented.
Curriculum Tags: Gr7, Gr8
Do you want to have some fun with square numbers? Then @mathgarden has your back. Last week I included this image as a single Tweet but now he's turned it into a full post on Medium. Whether you look at it from the patterning view as created by sums of odd numbers or geometric view as the area of a square with whole numbered sides, there is something here for you.
Curriculum Tags: Gr7, Gr8

I have said it before, I like self checking activities for practice. Though this isn't exactly a self checking activity, the design of it makes it easy to check. Basically it's four questions and their answers are to be summed and put in the centre. As the teacher, you need only check the sum to see if it's correct. Download all five sets from @marybourassa's blog
Curriculum Tags: MPM1D

Registration has opened up for this year's @OAMEcounts Leadership conference. This year it's incoming president @Paul_math's turn to organize the event and it looks like he's got a great line up. With @NatBanting, @MrAspinal, @EmDelSordo, @NHenryFundi, @marian_small, @hirenbmistry1 ‏and @dduff77, More details at the link
Curriculum Tags: All

Video/Audio Links
I seriously can't get enough of the Numberphile podcast. Brady is such a good interviewer and where else can you get @stevenstrogatz crying about mathematics. Even though this is primarily about calculus, I think this could easily be applicable to general mathematics.
Curriculum Tags: MCV4U


Image Links
It turns out that June 17th is World Tessellation Day (in honour of MC Escher's Birthday - I know that thanks to @MSBJacobs)
Curriculum Tags: Gr7
In honour of World Tessellation day I reposted my dynamic Escher-esque tessellation
Curriculum Tags: Gr7
And finally for World Tessellation day, this series of Tweets from @Simon_Gregg that starts with some simple work with triangles then ends with a very cool tiling pattern. Be sure to follow the whole string of Tweets
Curriculum Tags: Gr7


Friday, June 14, 2019

Math Links for Week Ending Jun. 14th, 2019

Featured Links
A couple of new releases from Mathies.ca. First, the Algebra Tiles app which has been in beta for a while is finally out. Check out all the tips and tricks here. The other new app is the representation match game with fractions. The nice thing about this game is that you can play it on any device (since it's built with HTML5). And if electronic matching games are not your thing, then they have also made available printable cards to physically play the match. You can get those here
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P, MPM2D, MFM2P

Resource Links
How about some dynamic cube nets
Curriculum Tags: All
https://twitter.com/GHSMaths/status/1138552885313036288

Here's a great Desmos activity (based on an activity by @MrOrr_Geek) for introducing the concept of systems of equations. It has some nice features in the first few slides and then finishes off with a Challenge Creator for students to create there own then practice on each others.
Curriculum Tags: MPM2D, MFM2P
https://teacher.desmos.com/activitybuilder/custom/56d139907e51c4ed1014b51f

The new features keep coming from @Desmos. Recently they introduced new statistics tools and most recently they have added some random functions to to add to the strength of the tool. Check out this simple use from @Dandersod and then start playing on your own.
Curriculum Tags: MDM4U
https://twitter.com/dandersod/status/1138205863615897602

Some research about the benefits of removing numbers from questions. I like the idea of numberless word problems and the research says so should you.
Curriculum Tags: All
https://twitter.com/ddmeyer/status/1137089334044008448
Do you have a story about a time when you used some teaching method that, as you look back, you may be embarrassed about now? We all started somewhere and did things that makes us cringe now. To me, that's called progression. Well, if you are up for it, @Mr_stadel is looking for you for his new podcast "Math Confessions". It's coming out in the fall but if you would like to be part of it, you can make your math confession, just contact Andrew.
Curriculum Tags: All
https://twitter.com/mr_stadel/status/1137043290283491330
Article Links
Unless you have been living under a rock, you know that The Toronto Raptors won the NBA Championship this week. Here you can read about the numbers guy behind the team. Thanks to @KMarkPet for pointing this one out
Curriculum Tags: MDM4U
https://www.cbc.ca/news/canada/london/londoner-karl-toulous-toronto-raptors-statistician-1.5174519

Video/Audio Links
If you were not sure about the power of numbers in the above article, in this episode of The Indicator they explain "Hoopinomics" and especially why the 3-point shot has become the mark of a championship team.
Curriculum Tags: MDM4U
https://www.npr.org/2019/06/10/731408726/hooponomics

Here's a fun problem for dealing with logs. As it turns out Log(1 + 2 + 3) = Log(1) + Log(2) + Log(3). It shouldn't be true but it is. Find out why
Curriculum Tags: MHF4U
https://www.youtube.com/watch?v=OcTMBrUutfk


Image Links
Here is a nice visual proof. Good for patterns and or finite series. 
Curriculum Tags: Gr7, Gr8, MCR3U


Friday, June 7, 2019

Math Links for Week Ending Jun. 7th, 2019

Featured Links
I like being able to show student work easily and this week I found a new way to do that using @getRocketbook and @Wipebook. If you don't know what a Rocketbook is, it's a reusable notebook. That is simplifying it greatly but you can watch this video to get the idea. It turns out you can download some free Rocketbook templates directly from their website and if you want to capture student work that they have put on Wipebook sheets, then all that is required is that you enlarge the QR code and symbols at the bottom of the Rocketbook sheet and the natural black boarder of the Wipebook sheet becomes a large Rocketbook sheet. Great, I think, for saving work from a vertical non permanent surface session. Below is how you could do it. And thanks to @MathisVisual for pointing out that Wipebook already has their own app to do something similar. Check it out here.
Curriculum Tags: All
https://www.youtube.com/watch?v=OluiiYYhS_I

Resource Links
Looking for some Geometry based activities? Here @teachmathtorr has shared almost 90 activities. Enjoy.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://twitter.com/Teachmathtorr/status/1135381510285144064

So any whole number can be written as the sum of three triangular numbers. Want to check this? Then Tweet any number to @3_triangles and this bot will send back a visual representation (where possible) of the three numbers. Here's one that I did. Thanks to @divbyzero for this one
Curriculum Tags: All
https://twitter.com/divbyzero/status/1136255191869734914
Here's an idea for a lesson on percents thanks to @approx_normal. Take a look at your favourite rewards/loyalty program and calculate the percent return. For example, with me, it's buy 7 coke slurpies and get 1 free. Check out the article below
Curriculum Tags: Gr7, Gr8, MFM1P
https://www.tripofalifestyle.com/money/are-rewards-programs-worth-your-time/




Article Links
In times like these this doesn't surprise me. I thought it was a joke at first but, it turns out, nope, this is legit. More than half the people who responded to this survey say that we shouldn't teach Arabic numerals in schools.
Curriculum Tags: All
https://www.live5news.com/2019/05/19/should-arabic-numerals-be-taught-schools-most-americans-say-no/

Opinion Links
In response to some recent calls to get rid of Algebra in math class, @MathGarden posts this response
Curriculum Tags: All
https://medium.com/@sunilsingh_42118/the-bridge-between-arithmetic-and-algebra-is-broken-which-means-math-education-is-broken-62f68ec12c76

Video Links
Based on a prompt from @ecokrisb I fell down the YouTube rabbit hole and found these three videos on the history of algebra from @ProfKeithDevlin
Curriculum Tags: All
https://www.youtube.com/watch?v=WL6tFHUNTPE
https://www.youtube.com/watch?v=dR99o8C_zD4
https://www.youtube.com/watch?v=_Q_Qvr9zFp0





Image Links
Here is a nice probability context
Curriculum Tags: Gr7, Gr8, MDM4U
https://twitter.com/howie_hua/status/1136096737884483584


Friday, May 31, 2019

Math Links for Week Ending May 31st, 2019

Featured Links
I think it's really important to play around with assessment. Traditional paper and pencil assessment is fine but it's not the only type that is valid. So I love when people post about their little experiments. In this case @Dandersod talks about his first attempt at partner quizzes. Follow the entire thread for all the details.
Curriculum Tags: All
https://twitter.com/dandersod/status/1134449023300120576
Resource Links
Do you want your students to model real situations with parabolas. Then this picture taken by a local photographer does the job. And while your at it, just import it into Desmos for analysis. Thanks to Mark Garant for pointing out this one
Curriculum Tags: MPM2D, MFM2P, MCR3U, MBF3C, MCF3M
https://www.cbc.ca/news/canada/windsor/bald-eagle-steve-biro-1.5145556
https://www.desmos.com/calculator/x4s4ndm8er

Video Links
I have seen many of these Pythagorean relationships with regular figures but I like the way that @giohio animated this version with hexagons. Click on the link in the Tweet to get the full Geogebra file.
Curriculum Tags: Gr8, MPM1D, MFM1P
https://twitter.com/giohio/status/1134454045526167552

A very cool relationship regarding rectangles, calculators and multiples of 11.
Curriculum Tags: Gr7, Gr8
https://www.youtube.com/watch?v=waqDoeQ0Ijw

Image Links
Here's a nice little twist on a simple worksheet. Adding and subtracting integers with a twist.
Curriculum Tags: Gr7, Gr8
https://twitter.com/MrNiksMathClass/status/1134416312397119488

I guess Game of Thrones was a thing. According to this graph, the writers got lazy over the years.
Curriculum Tags: MPM1D, MFM1P, MDM4U, MAP4C
https://twitter.com/jowrotethis/status/1131956466993094656



Friday, May 24, 2019

Math Links for Week Ending May 24th, 2019

Featured Links
One of the sessions that I did at OAME 2019 last week was on using Twitter (and other social media) as a PLN. After I got home I came up with this (longish) summary image to increase your presence on Twitter beyond just lurking and how to boost the visibility of your posts. I think the most important one is that one of the best things you can do is Retweet someone else's Tweet so that more people can see it (that's way better than liking it). If you have another tip, put it in the comments of the Tweet.
Curriculum Tags: All
https://twitter.com/davidpetro314/status/1130539426264866818


Resource Links
If you don't already follow @CShearer41 you should. Her simple little low tech geometry problems are fun. Here's one dealing with area where all you need to know is the area of a triangle and the area of a rectangle.
Curriculum Tags: Gr7, Gr8
https://twitter.com/Cshearer41/status/1126856640643440640
Here is a cool simulation revolving around how many years you have left to live. Great for when you are talking about the reality of probability and how it relates to us. Thanks to @KMarkPet for this one
Curriculum Taga: MDM4U
https://flowingdata.com/2015/09/23/years-you-have-left-to-live-probably/


A month ago we had Collections added to the features of Desmos bookmarks. Now, if you have a collection, you can share it directly with teachers. Just copy the share link and distribute, then those teachers can add the entire collection to their own
Curriculum Tags: All
https://twitter.com/anandthakker/status/1130898954261082112


A new book is out and it features the voices of some Ontario Educators (among others) like @AmyLin1962 @Marian_Small @Pi_Lab and @ggininewman. It's called My Best Idea from @rubiconpubs and is basically a summary of every one of the author's best ideas in education.
Curriculum Tags: All
https://www.rubiconpublishing.com/collections/my-best-idea/


Video/Audio Links
Two years ago I posted a video of a bunch of bricks that show the double domino effect. That 20s video went viral and has over 11million views right now. Here's a Desmos version of the same effect. Thanks to @JoceDage for pointing this out to me.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P, MPM2D, MFM2P
Here's a great animation from @Dynamic_math showing the circumference of a circle
Curriculum Tags: 
Do you want to know how to make a recursive slideshow presentation and then turn that in to Fractals and the Fibonacci numbers? Of course you do
Curriculum Tags: MCR3U
https://www.youtube.com/watch?v=b-Fa6HtvGtQ


And @standupmaths has a new(ish) book about math mistakes and here is his Talk at Google about that topic.
Curriculum Tags: All
https://www.youtube.com/watch?v=34detVy-Hiw


I saw this Tweet from @MFAnnie a few weeks back and I had not seen this video of her talking about her mother and how much math she did (unbeknownst to her mom) as she was making her quilts.
Curriculum Tags: All
https://www.youtube.com/watch?v=BZ3xm0hipIg

A new podcast in the educational area, this time from @Mr_Stadel.  Only two episodes in but already some good tips on enhancing what you are already doing.
Curriculum Tags: All
http://www.estimation180.com/podcast.html



I liked this episode from @PlanetMoney on applied probability, that is, how James Holzhauer is using math to blow everyone away at Jeopardy.
Curriculum Tags: MDM4U
https://www.npr.org/2019/05/10/722198188/episode-912-how-uncle-jamie-broke-jeopardy

Image Links
And speaking of Jeopardy and strategic playing. Here are the historical percentages of where the Daily Double has been located. Click through to the link to see an animated version of this spanning 31 seasons.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://flowingdata.com/2015/03/03/where-to-find-jeopardy-daily-doubles/

Some great visuals from @MonaChalabi comparing statistics seen on the TV show Cops to real life. Be sure to click through to see them all
Curriculum Tags: MDM4U
https://www.instagram.com/p/BxsQNK6F0zE

Saturday, May 18, 2019

Math Links for Week Ending May17th, 2019

Featured Links
It was OAME 2019 this week so I will focus on things I saw there. Before we get to the stuff I saw, I encourage you to look at the back channel and all the people Tweeting about the conference. So many good things. Click on the link to see them all but below are a couple specific ones and especially look at the one by @DerekRhodenizer where he has created a shared Google Doc where anyone can add info into (got some to add, then go ahead):
Curriculum Tags: All
https://twitter.com/hashtag/oame2019?f=tweets&vertical=default&src=hash


Resource Links
I'll start with the four sessions that I presented. I did a session on using Twitter (and other social media) to build your personal PLN (here are all the links people shared in that one), one on using CODAP in data management and two in the Desmos mini conference: one on activities for Grade 7&8 and one on using Desmos Geometry. You can get to all of my slide decks at the link below
Curriculum Tags: All
http://bit.ly/oame-petro


The first session that I actually saw was from @NatBanting on "Creating Mathematical Possibility by Constraining Mathematical Possibility". Get the slide deck here
Curriculum Tags: All
http://natbanting.com/presentations/





I saw @HTheijsmeijer's session on using technology to move beyond traditional assessment. One thing liked was the idea of replacing the word "effectiveness" with more specific words in the standard rubrics. There is other good stuff too, Check out her slideshow.
Curriculum Tags: All
http://bit.ly/CaptureOAME

I also saw @MSBJacobs and Natalie Reid talking about minding the gaps in student thinking with some great diagnostic tasks that you could really use for any grade. I especially love both the simplicity and effectiveness of the place value ones.
Curriculum Tags: All
https://drive.google.com/file/d/1Mifh3bBfDFIALmO5pcVvKRaHP5_LeI8L/view

I saw one of @TracyZager's session on Going Beyond Group Work and you can see some images below but one other thing I learned is that there are a pile of resources on her book "Becoming the Math Teacher you wish You'd had" on her website
Curriculum Tags: All
http://tjzager.com/



Do you know someone who isn't on Twitter but might like to Tweet? Well, they can use an account that @CarlOliwitter created. Just send an email to pushsend2020@gmail.com that has no more than 270 characters and that account will Tweet it out for you anonymously. Pro tip, remove any automatic signature on your email or that will show up in the Tweet. That was part of what he did, you can find more in his slidedeck below
Curriculum Tags: All
https://docs.google.com/presentation/d/1oBvOTkxURjy9-ssbGeGv4xnAEpkvZmBF2xsC71r0WT8/edit?usp=sharing


I did a Breakout Room for mathwith @BoychukMath and @Coachie83 . It was fun and they had a lot of resources on how to create your own in their slide deck
Curriculum Tags: All
http://bit.ly/BreakoutOAME2019

Video Links
One of the examples that @TracyZager used in her session was from a resource on Learn, Teach, Lead featuring @MatthewOldridge where he started with this prompt and then they captured (via video) all of the student thinking around the question "What's a fair price for each cup size?" And although the mathematics fits grade 7 or 8, the discussion could fit any grade. Below is just one of the videos. Click through the link below to see the whole series. Tracy used excerpts from the student clips (third link)
Curriculum Tags: Gr7, Gr8
https://thelearningexchange.ca/projects/loving-the-math-living-the-math-part-1/?pcat=1103&sess=2
https://thelearningexchange.ca/projects/loving-the-math-living-the-math-part-2/?pcat=1103&sess=0
https://thelearningexchange.ca/projects/student-clips/?pcat=1103&sess=0

BCM - The Three-part Lesson: Activating Student Thinking from The Learning Exchange (1) on Vimeo.

Image Links
@Eluberof reminds us that since non routine cognitive jobs are on the rise and routine non cognitive or manual jobs. His entire slidedeck can be found at the link
Curriculum Tags: All
http://bit.ly/Eli-OAME
A couple of slides from @MarkChubb3's session on Making Math Visual
Curriculum Tags: All


I had my #MathGals Shirt on. Get yours here
Curriculum Tags: All
https://twitter.com/stoodle/status/1129002855614959617





Friday, May 10, 2019

Math Links for Week Ending May 10th, 2019

Featured Links
Thanks to @kreiem I was introduced to Euclidea which, itself is a geometry based game but once you go to the website, you find that it's just the tip of the iceberg. You can play Pythagorea, XSection or a few other geometry and math based games. Euclidea can be played on the web or on Apple or Android products, Pythagorea on Apple or Android and the rest are only on Apple products. Fun stuff for (you or) your kids.
Curriculum Tags: All
https://www.euclidea.xyz/


Resource Links
What a great thread started by @MarkChubb3. Be sure to follow the whole discussion
Curriculum Tags: All
https://twitter.com/MarkChubb3/status/1124356066492469249

With a bunch of activities that span from grade 7-10, this collection of Desmos activities (created by @KurtSalisbury & @MrJohnRowe) that are themed around classic video games could be great for your kids. Thanks to @AlgebraDesmos for pointing this out.
Curriculum Tags: Gr7, Gr8, MPM1D, , MFM1P, MPM2D, MFM2P
https://retrodesmos.com/

Video Links
Who knew that chalk could be so awesome
Curriculum Tags: All
https://www.youtube.com/watch?v=PhNUjg9X4g8


A new one from @MathisVisual on solving two step equations. Be sure to click through to the site for all the teacher moves.
Curriculum Tags: Gr7, Gr8
http://mathisvisual.com/two-step-equations/

Image Links
Here is a great primer for deciding what type of graph to use for your data
Curriculum Tags: MDM4U
https://twitter.com/nstamboglis/status/1123910851193450499