Friday, May 22, 2020

Math Links for Week Ending May 22nd, 2020

Featured Links
With all of the data floating around about Covid-19 it's hard to find just the right one to use in your class. Well last week this data showed up all over my Twitter feed and it's a great example of "how to lie with statistics". And just for fun, I took the graph and re arranged it to chronological order. Since then the Georgia officials have walked it back. But still it's a great example to open discussions with your students.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://news.yahoo.com/georgias-coronavirus-numbers-made-reopening-183733274.html
Chronological version:
Resource Links
In this long blogpost @ChrisHunter36 does a great job of connecting Indigenous art to patterning and beyond.
Curriculum Tags: Gr7, Gr8
https://reflectionsinthewhy.wordpress.com/2020/05/21/two-legged-four-legged-winged-finned-patterns-from-indigenous-art/




If you are looking for something for you (or your students) to do while we are learning from home, I strongly suggest @Anniek_P's daily #MathArt challenges. As I type this, she is at Day 66. They are for humans who have all levels of artistic and mathematical ability. Check them out
Curriculum Tags: All
https://arbitrarilyclose.com/




Video Links
Last week I shared the latest post from @SaraVDWerf about her Green Sheets. Here is a quick summary of what those are from Sara herself.
Curriculum Tags: All
https://www.youtube.com/watch?v=alhi5lvSMxg

Fractals are beautiful from any angle
Curriculum Tags: All
https://twitter.com/matthen2/status/1261872991668809729
And the response in @Desmos from @SumDumThum
Curriculum Tags: All
https://twitter.com/SumDumThum/status/1262224459789824000
A nice circle/midpoint triangle theorem by @GHSMaths done in @Desmos.
Curriculum Tags: MPM2D
https://twitter.com/GHSMaths/status/1262194328337874945
Nice visual proof for this infinite series.
Curriculum Tags: MCR3U
https://twitter.com/Nereide/status/1263456710959783937
If you have ever done the Ball Bounce experiment then you might consider this video as a teaser or an extension.
Curriculum Tags: MPM1D, MFM1P, MDM4U
https://www.youtube.com/watch?v=EbjG8S6Xr_I

Image Links
Thank you TV for providing a nice math question
Curriculum Tags: All
https://twitter.com/MathByTheMt/status/1262089071347683329






Friday, May 15, 2020

Math Links for Week Ending May 15th, 2020

Featured Links
Whoa! This "Green Sheet' review process from @SaraVDWerf is pretty awesome. What is a Green Sheet? It's one sheet of paper reviewing mathematical concepts connected to current learning. You might think "right, another review sheet" but, seriously, Sara has done a deep dive into how to use these, create your own, why they are good and even how to use them in the distance learning environment. And she has made a bunch of these and have them ready for you. I also love how she qualifies their ability to help kids also:
"I use green sheets as one of many supports for my students who arrive to the courses I teach not academically ready for the course. I have found that ALL students find green sheets helpful – but only after I have taught them how to use them and also normalized their use in class. But……If you think green sheets will magically make your students who struggle, to not struggle, you would be wrong. Green Sheets alone are not a magic bullet."
Curriculum Tags: All
https://www.saravanderwerf.com/green-reference-sheets/

Resource Links
I am sure you have probably done the four 4s activity with your kids. And so in this time of distance learning I think I really like this dynamic @Desmos version that allows you to play as a class from @KenClarkson3
Curriculum Tags: All
https://twitter.com/ddmeyer/status/1260045424770994176
After seeing @NatBanting's virtual session on #MenuMath, I put together this one for adding and subtracting fractions. The whole #MenuMath structure is a great way to have kids do basic problems related to various topics. Check them all out at his website http://natbanting.com/menu-math/. But here is a dynamic @Desmos version for distance learning. And thanks to @pascgall, there is also a French version.
Curriculum Tags: Gr7, Gr8
https://teacher.desmos.com/activitybuilder/custom/5ea4dd29957bf80134c0df0b

And as an added bonus, @pascgall has also translated my Division of Fractions progression to French as well.
Curriculum Tags: Gr7, Gr8
https://twitter.com/pascgall/status/1261359404978503680
And finally, some great work from @Christophe_Sew in the area of derivatives of functions with negative powers. As the Tweet Says: Infinite examples with the random problem generators for instant practice. But as an added bonus he's made a collection of all of his Calculus activities here
Curriculum Tags: MCV4U
https://twitter.com/Christophe_Sew/status/1261317995311370240
Video Links
This is quite possibly my favourite infinite fractals. And I love that it was created by @sumdumthum in @Desmos.
Curriculum Tags: All
https://twitter.com/SumDumThum/status/1259433047750873093
I'm not even sure what to call this but I was mesmerized.
Curriculum Tags: All
https://twitter.com/SumDumThum/status/1257236064101515264

It's so awesome that this whole animation was done in @Desmos. Perhaps some ideas for analytic geometry in MPM2D.
Curriculum Tags: MPM2D
https://twitter.com/GHSMaths/status/1259620177576148996
You may love that they exist or hate that they exist but online apps that solve equations and do algebra exist. You should probably know about them at least so you can adjust your lessons. Here @MrValencia24 gives us the lowdown on two of them.
Curriculum Tags: All
https://www.youtube.com/watch?v=qjD4xipBhP8


Image Links
This series of images is awesome. What a perfect connection to sinusoidal functions. And if you know Ernesto, make sure you give him some props. Make sure you click through the link to see the whole picture.
Curriculum Tags: MCR3U, MCF3M, MHF4U
https://twitter.com/MrsKaylaDuncan/status/1259088792335630337





Friday, May 8, 2020

Math Links for Week Ending May 8th, 2020

Featured Links
It's (hopefully) no secret that a) OAME 2020 was supposed to be happening right now and was cancelled and b) OAME 2020 Virtual was put in its place. And as part of the organization committee I have been helping with the live sessions so I will share just a few of the things I've seen that have been share worthy (you'll have to register to see the rest). As I type this on Friday night, there are still some spots left if you want to register for this free conference. All the sessions are freely available until Monday at midnight and then after that you have to be an OAME member. Check out the lineup and find out how to be a last minute registrant.
Curriculum Tags: All
http://oame2020.ca/virtual-oame

Resource Links
I have always been a fan of Ron Lancaster. And I found out today that he has presented at 38 OAME conferences in a row. So I'm glad that we were able to put this on so that he could keep his streak going. He always manages to take something that starts out simple and then pull complex mathematics out of it. Today he didn't disappoint and I love that he talk up Geometer's Sketchpad (and even included some GSP files in his folder of resources). The premiss was that there is no need to worry about having enough time to cover all the curriculum if you have some rich problems to have students tackle. Even if you just go for some of the great images that he has taken over the years from around the world then that's enough. And a heads up, he will be the 100th presentation of NCTM's 100 Days of Professional Learning so stay tuned for that later this fall. In the meantime his session folder is below but if you get this soon enough, check out the recording of his live session in the conference archives (see website, above).
Curriculum Tags: MPM2D, MCR3U, MCF3M
https://tinyurl.com/OAME2020VC

It's no secret that I'm a fan of CODAP, so I was thrilled at @JoelBezaire and @Approx_Normal's session on Harnessing Student Curiosity with data. I think that even if all you do is go to their slideshow to grab all of the awesome datasets that are so interesting and can't help but entice your students to dig deeper then you're doing alright. But also check out the recording of their session so you can get a glimpse of how great CODAP is. Get their slide deck below
Curriculum Tags: MBF3C, MDM4U, MAP4C
https://docs.google.com/presentation/d/1suDqBQUO1ExG1yt86ISSJvEeNK-8J3aC_JZTPpGesuA/edit?usp=sharing

And for those who really want to dive into data analysis. You might consider trying RStudio and checking out @PappyPapalia session. He does a pretty good job of taking something that seems complex (the coding involved) and making it attainable. And, much like @JoelBezaire and @Approx_Normal's session, there are some great data sets here. Check out his slide deck below and watch the recording of his session for more info.
Curriculum Tags: MDM4U
https://bit.ly/DS_Slides_OAME_2020


And if you are checking out the pre recorded session, I would not miss @NatBanting's session on #MenuMath. If you are looking for a way to create authentic assessment for students at a distance, I think one way you can do that is to give students a menu of things to do for a particular math topic and ask them to create problems or situations that check off the things in the menu with the fewest problems. I am totally butchering the description. Check out all his examples at the link below and check out the video of his OAME session at the OAME conference website.
Curriculum Tags: All
http://natbanting.com/menu-math/

Though this isn't part of the OAME conference, I did release a new @Desmos activity this week that walks through a series of division of fractions questions that helps to build the algorithm to divide them without telling students directly right out of the gate. It is a self checking activity and it has a Challenge Creator for students to create their own problems too.
Curriculum Tags: Gr7, Gr8
https://teacher.desmos.com/activitybuilder/custom/5c8ea44e309dd82445a4de8b


Video Links
I didn't know what the involute of a circle (tree) is. Thanks to @LukeSelfwalker, now I know. Be sure to check the comments to get the "full picture"
Curriculum Tags: MCV4U
https://twitter.com/LukeSelfwalker/status/1256343267702198272
I love mathematical optical illusions.
Curriculum Tags: All
https://twitter.com/Gelada/status/1256683346706432005

Image Links
Check out how John Coltrane draws a picture illustrating the mathematics of music. Thanks to @KMarkPet for pointing this one out.
Curriculum Tags: All
http://www.openculture.com/2017/04/the-tone-circle-john-coltrane-drew-to-illustrate-the-theory-behind-his-most-famous-compositions-1967.html




Saturday, May 2, 2020

Math Links for Week Ending May 1st, 2020

Featured Links
Although I don't often repeat posts, because I am helping with the organization here, I am taking some licences and reminding people that our virtual math conference is happening starting Wednesday and there are over 3000 people already signed up. OAME 2020 Virtual features 30 live sessions and over 20 pre recorded sessions on May 6-9th. When you register you will be registering for the conference but not picking sessions. We will just be sending you links each day for the day's sessions. The conference is free to all but the recordings (both live and pre recorded) will only be open to the public until the following Monday. Check out the full program and get registration details at the link below
Curriculum Tags: All
http://oame2020.ca/virtual-oame


Resource Links
I know I have been posting a lot of @Desmos stuff lately but I know that people are looking for things they can use online and I think that the ability to comment and watch what kids are doing in realtime then it's a great tool. That being said, here is an activity that I created to help kids develop an understanding of fraction division without directly telling them. And as a bonus, it's self checking and there is a Challenge Creator so students can create their own devision problem for the rest of the class to try out.
Curriculum Tags: Gr7, Gr8
https://engaging-math.blogspot.com/p/desmos-activities_10.html


Some great tips from @JReulbach on things you can do at home to hack together a studio for making videos. And I highly recommend the same stylus she's suggesting. I use the same one.
Curriculum Tags: All
https://ispeakmath.org/2020/04/23/ipad-palm-rejection-hack-an-awesome-cheap-stylus/


Opinion Links 
I am a fan of good information and in this post, @RobertKaplinski is telling us about some of his favourite non fiction books that are not about education that every teacher should read. And I have read four of five but my fav from the list is Made to Stick. I wouldn't miss it.
Curriculum tags: All
https://robertkaplinsky.com/5-non-education-books-all-education-leaders-should-read/



Video Links
I totally love this video from @StandupMaths and @FryRSquared about the dangers of false positives. This was recorded last December but it's totally topical now where there is talk of the accuracy of Covid tests.
Curriculum Tags: MDM4U
https://www.youtube.com/watch?v=vBPFaM-0pI8

And I love how I can finally watch @FryRSquared's Full Christmas lecture now on probability
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://www.youtube.com/watch?v=_q4DrUHKC0Q

And on Algorithms
Curriculum Tags: All
https://www.youtube.com/watch?v=TtisQ9yZ2zo


And on Math's limits
Curriculum Tags: All
https://www.youtube.com/watch?v=u5mNa6KE0lA



Image Links
This is just one link but check out all of the geometry and drawing challenges that @Anniek_P has posed. Some great stuff for when your stuck at home
Curriculum Tags: All
https://arbitrarilyclose.com/2020/05/01/mathartchallenge-day-45-the-lotfallah-mosque-dome/





Friday, April 24, 2020

Math Links for Week Ending Apr. 24th, 2020

Featured Links
Hey, it's public knowledge now. Everyone knows that OAME 2020 was cancelled but what you don't know is that behind the scenes we've been working diligently to bring you a smaller version in the online setting. To that end we bring you OAME 2020 Virtual featuring 30 live sessions and over 20 pre recorded sessions on May 6-9th. When you register you will be registering for the conference but not picking sessions. We will just be sending you links each day for the day's sessions. The conference is free to all but the recordings (both live and pre recorded) will only be open to the public until the following Monday. Check out the full program and get registration details at the link below
Curriculum Tags: All
http://oame2020.ca/virtual-oame


Resource Links
Are you looking for some random generators, then grab a screen from @EliLuberoff's @Desmos activity. You have spinners and dice in various forms. Just grab the screen and go with your own activities.
Curriculum Tags: All
https://teacher.desmos.com/activitybuilder/custom/5e9c8983dbf73d1423bf215f

Video Links
Though it might be true, I wonder if the perimeter stays constant. I'm thinking the metal might stretch. It looks cool though.
Curriculum Tags: MPM1D, MFM1P
https://twitter.com/mathemaniac/status/1059172074579587072
So cool looking but I think some of those gears are stretching
Curriculum Tags: All
https://twitter.com/mathemaniac/status/1251570400200294402
I did a panel discussion this week and talk about some math related and other tools for online teaching but really I think the cool part of this was talking to @watnunu talking about her experiences currently teaching in China. And if you want, here's the slide deck
Curriculum Tags: All
http://k12.oliah.ca/webinar/webinar-3-high-school-education-wed-april-22-2pm-edt/

It looks like @3Blue1Brown is jumping into the online teaching game and one thing I liked about this was the answer to the question "When will I ever use this?" - "The movie Coco probably used the quadratic formula over a trillion times"
Curriculum Tags: MPM2D, MCR3U
https://www.youtube.com/watch?v=MHXO86wKeDY

Image Links
Some Covid-19 humour here. Thanks to @rinahyland for pointing this one out
Curriculum Tags:All
https://twitter.com/howie_hua/status/1253476512545693696
A few more from @DonFraser9
Curriculum Tags:All
https://twitter.com/DonFraser9/status/1251506245527375873
https://twitter.com/DonFraser9/status/1252372607019610113
https://twitter.com/DonFraser9/status/1252365035696873473






Friday, April 17, 2020

Math Links for Week Ending Apr. 17th, 2020

Featured Links
I have created a new page on this blog to highlight resources that focus specifically on two things:

  1. matching Ontario Curriculum and
  2. have ways to connect teachers to students

The three main things that fit these criteria are @ExploreLearning, @KnowledgeHook and I have organized over 40 pages of @Desmos activities to match the overall expectations for most of the grade 7-12 courses. And as an added bonus we have curriculum matched resources from @uWaterloo_CEMC and @PrepAnywhere
Curriculum Tags: All
https://ontariomath.blogspot.com/p/ontario-online-math.html

Resource Links
Here's another fun story full of memes from @JoelBezaire. This time with Pascal's Triangle. Don't forget to check the comments for the link to the teacher file.
Curriculum Tags: MDM4U
https://twitter.com/joelbezaire/status/1250792856211591174
Some more self checking vector equations activities from @Christophe_Sew. All in one collection
Curriculum Tags: MCV4U
https://twitter.com/Christophe_Sew/status/1251140674134478850




I know there is a lot of @Desmos this week but for those of you who want to take your skills to the next level, then check out this collection of  Intro to CL activities from @Jocedage.
Curriculum Tags: All
https://teacher.desmos.com/collection/5cacb59a0847cb0c70183e13


Video Links
Some fun three dimensional geometry
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://twitter.com/panlepan/status/1249042410941923331
Nice dynamic tessellation
Curriculum Tags: Gr7
https://twitter.com/SumDumThum/status/1249191914919931905
Nice dynamic optical illusion
Curriculum Tags: MHF4U
https://twitter.com/GHSMaths/status/1249439069597245446

Image Links
A whole bunch from @DonFraser9. I almost didn't get the magic square one
Curriculum Tags: All
https://twitter.com/DonFraser9/status/1250061734964006915
https://twitter.com/DonFraser9/status/1250132324513132545
https://twitter.com/DonFraser9/status/1250799843137794049
https://twitter.com/DonFraser9/status/1250810009853837313







Friday, April 10, 2020

Math Links for Week Ending Apr. 10th, 2020

Featured Links
There seems to be a lot of stress about how to assess students in these online times. With kids already being stressed about school work I'm not sure if stressing them about assessment is helping. However, we still have to figure out a way to do it. Well @JRuelbach has been the @Desmos spokesmodel for assessment for years and she's got some ideas for you whether it's this new Tweet about using the comment feature while allowing students to annotate their own work or her one hour Desmos session on assessment in general.
Curriculum Tags: All
https://twitter.com/jreulbach/status/1248357641300185088
https://www.youtube.com/watch?v=59NnV6GBCG8&feature=youtu.be


Resource Links
I love this "story" that @JoelBezaire created about why Root 2 is an irrational number. It's ultimately a walk through but he keeps it light and entertaining. You should take a look at this, if only to see all the work he did getting the memes into it.
Curriculum Tags: All
https://twitter.com/joelbezaire/status/1247978769467559938

Another new Feature on Desmos is one that we've been asking for for a while. That is, the ability to do some sharing between teachers. In this case, it's the ability to share dashboards between teachers. I think, given all this online learning, this would allow teachers to team teach during an online session.
Curriculum Tags: All
https://twitter.com/Desmos/status/1246176600955076608

Finding good resources for working with vectors is sometimes tough. In this activity @Christophe_Sew give's students lot's of self checking practice with vector equations.
Curriculum Tags: MCV4U
https://twitter.com/Christophe_Sew/status/1248041497846579202


Could the stairway in this house be exponential? Take out your favourite modelling software and find out.
Curriculum Tags: MCR3U, MCF3M, MCT4C
https://twitter.com/davidpetro314/status/1246877936373747712

Opinion Links
Sometimes knowing math isn't enough to talk the math of our current situation.
Curriculum Tags: All
https://twitter.com/ddmeyer/status/1247364831943917568


Video Links
Now that we are all online, you may want an easy way to show students math work in real time and specifically where you are almost like you are working on the same whiteboard together as if you are in class. To do this you can use a Google app like Jamboard and here's how
Curriculum Tags: All
https://www.youtube.com/watch?v=Rby3358N5f4

Who doesn't like a nice Fibonacci fractal image done live
Curriculum Tags: All
https://twitter.com/Ayliean/status/1247487373962817536
Image Links
@DonFraser9 has a few more puzzles for you
Curriculum Tags: All
https://twitter.com/DonFraser9/status/1246915553014566918
https://twitter.com/DonFraser9/status/1246837320873107456


A little bit of Pythagorean Theorem, a little bit of area and a little bit of solving simultaneous equations
Curriculum Tags: MPM2D
https://twitter.com/Cshearer41/status/1246713032560033793