Friday, March 27, 2020

Math Links for Week Ending Mar 27th, 2020

Featured Links
So I think many people have been asking for this feature on @Desmos activities for a while and I don't think it could have better timing. Being able to give direct feedback to students right in the activity is the perfect thing needed right now as we are out from our schools. Keep in mind, ideally, it would always be better to be able to talk to students directly while doing an activity with your students but given the situation we are in, this is a nice addition.
Curriculum Tags: All
https://twitter.com/Desmos/status/1242283303970861056
Resource Links
If you like Skyscraper puzzles then check out these two resources. Firstly @MarkChubb3 has created some new ones that you can download from his site. And as well, this Brain Basher's site has randomly generated ones that you can download as well. Now of course, you could do these by just placing the numbers 1-4 in each row and column so there are no repeats in either but it's way more fun to actually "build" the skyscrapers with snapcubes or legos.
Curriculum Tags: All
https://buildingmathematicians.wordpress.com/2020/03/22/skyscraper-puzzles-printable-package/
https://www.brainbashers.com/skyscrapers.asp

I have been finishing up and creating some new @Desmos activities to help with the distance learning dilemma. A lot of the new ones I have been creating are self checking so that students know how they did right away. These two are for adding and subtracting fractions and they both are organized in a progression of simple to more complex questions with visual and numerical representations. And both end with a Challenge Creator for students to create their own questions for the rest of the class to do.
Curriculum Tags: Gr7, Gr8
https://teacher.desmos.com/activitybuilder/custom/5c93cccc84b46a0cafcc679d
https://teacher.desmos.com/activitybuilder/custom/5c78137e58f4090c399f4a5a

I also created a quick activity that deals with composite areas created with rectangles. Students see areas in the contexts of parking lots, roofs, parks and farms and then have a Challenge Creator where they can create their own composite area for the rest of the class to solve.
Curriculum Tags: Gr7, Gr8
https://teacher.desmos.com/activitybuilder/custom/5e14cbb238612b178ae126c9

Finally I created a beginning fractions activity that is rooted in pattern blocks. Students have to start by saying how much of each shape is made of each shape or colour. Answers start as whole numbers and then move to fractions. Then the questions become more challenging. All of the slides are self checking.
Curriculum Tags: Gr7, Gr8
https://teacher.desmos.com/activitybuilder/custom/5e7b53690da10b6877aacb2d


Opinion Links
Everyone is talking about assessment now. That is, how do I assess in a distance learning model? Though this post is from a month ago (before our current situation), I love the suggestion of allowing for students to choose the difficulty of questions they do on an assessment.
Curriculum Tags: All
http://modelthelearning.blogspot.com/2020/02/the-art-of-questioning-on-math.html


Video Links
And seeing as I have been making a lot of self checking activities. And so with that in mind I have made a collection of all of the activities that have that self checking feature. But on top of that I have created a two slide template so that if you wanted to create your own self checking activity you could. And to help out, I created a video on how you could do that. Now I know that many of these activities only ask surface and basic questions but sometimes we need our kids to practice and these are ways they can do this while still knowing if they are doing it correct. You can get all of my self checking activities, including the template here.
Curriculum Tags: All
https://www.youtube.com/watch?v=M4uAWT8Nnag

In the area of Covid-19 based videos, this one from @numberphile is a deep dive into both the calculus of exponential growth and a real time Geogebra tutorial.
Curriculum Tags: MCV4U
https://www.youtube.com/watch?v=k6nLfCbAzgo

And you may have seen a lot of sites with mathematical models of the spread of Covid-19. Many of those are based on some sort of exponential relationship (like the one above) but @3Blue1Brown has done his simulations all based around probabilities and made them all delightfully visual.
Curriculum Tags: All
https://www.youtube.com/watch?v=gxAaO2rsdIs


I mentioned this mathematical mistake a couple of weeks ago but I like how @StandupMaths reiterates the idea that when put on the spot, it's quite easy to make math mistakes. But he also goes through some more specifics about why people make this particular mistake
Curriculum Tags: All
https://www.youtube.com/watch?v=6egeUxIEQnM


Image Links
I love this image from @MonaChalabi. Have your students take a look and ask what they notice and wonder. So interesting to connect what countries are doing/have done and how their Covid-19 data looks
Curriculum Tags: MDM4U
https://twitter.com/MonaChalabi/status/1242512097986125825

And of course it's always good to have a bit of mathematical surprise
Curriculum Tags: All
https://twitter.com/DonFraser9/status/1241764289955926017



Friday, March 20, 2020

Math Links for Week Ending Mar. 20th, 2020

Featured Links
There are more hits due to Corona. This time it's the OAME conference in May. We had a length discussion at OAME headquarters and given the current conditions we felt that it was best to get ahead of this and let people know. 
Curriculum Tags: All
https://twitter.com/OAMElearns/status/1239546928184078338


Resource Links
Yup Conona keeps on going and I love that in this trying time, there are teachers who are doin analysis of their own. This is Ontario Math Links and @realJ_Mitchell has been keeping track of the numbers for Ontario. Check out this thread where he is making predictions and posts his @Desmos file. So if you are doing any sort of exponential stuff with your kids (either online or when we get back), you might want to work with this
Curriculum Tags: MCR3U, MHF4U, MCT4C
https://twitter.com/realJ_Mitchell/status/1241740759637929986
Here is a pretty cool simulator for how outbreaks spread. It's full of scenarios that start from the simple and move to the complex with sliders that you can play with. Have fun.
Curriculum Tags: MHF4U, MDM4U
https://twitter.com/davidpetro314/status/1240298827095080962
New from @Desmos just in time for the influx of online learning is a set of activity screens that are premade and easily copiable.
Curriculum Tags: All
https://twitter.com/Desmos/status/1240398489877651457

And if you have ever used SolveMe Mobiles then you might like this new activity as a intro to systems of equations.
Curriculum Tags: MPM2D, MFM2P
https://teacher.desmos.com/activitybuilder/custom/5e7272e64e91f10c4dd87821


Video/Audio Links
Some Pi Day videos starting with @standupmaths calculating Pi by hand the old fashioned way
Curriculum Tags: All
https://youtu.be/CKl1B8y4qXw


And of course @ViHartViHart has her Pi day rant, this time as a mashup with the Corona Virus.
Curriculum Tags: All
https://www.youtube.com/watch?v=Y4Lc5-6L1pE

Another one from @3Blue1Brown on probability strategies and the binomial theorem. I particularly like the initial context of Amazon ratings.
Curriculum Tags: MDM4U
https://www.youtube.com/watch?v=8idr1WZ1A7Q

If you haven't checked out @StevenStrogatz new podcast, The Joy of X, I think you are missing out. On it, he interviews working scientists and mathematicians and I really like the insights he reveals about what they actually do. Check it out on your favourite podcasting platform.
Curriculum Tags: All
https://podcasts.apple.com/us/podcast/the-joy-of-x/id1495067186




Some interesting math to reverse engineer the Covid-19 numbers coming out of Iran to give something that may be more realistic.
Curriculum Tags: All
https://www.bbc.co.uk/programmes/p086krm0


Image Links
I have been seeing a lot of people posting images of various designs made with pattern blocks. You can have any of your kids (students or children) create their own patterns virtually using the awesome @OnMathies pattern blocks app to do so.
Curriculum Tags: All
https://mathies.ca/learningTools.php#Pp0






Friday, March 13, 2020

Math Links for Week Ending Mar. 13th, 2020

Featured Links
Well unless you have been hiding under a rock you know that it's getting intense in terms of the coronavirus. And if you didn't already know it, NCTM in Chicago has been cancelled. That's crazy but true. So if you had planned to go, your plans have changed.
Curriculum Tags: All
https://www.nctm.org/News-and-Calendar/News/NCTM-News-Releases/NCTM-Events-and-COVID-19/


Resource Links
Despite tomorrow being Pi Day, I am going to keep this week's links short and sweet with a focus on the coronavirus starting with this very detailed summary of a lot of the statistics to date. There are some great graphs here and they really get into the weeds and details. I particularly like the graph of how the infections have changed in Hubei province now that they have shut the place down (and perhaps why they are having such a hard time in Italy - because they didn't)
Curriculum Tags: MDM4U
https://medium.com/@tomaspueyo/coronavirus-act-today-or-people-will-die-f4d3d9cd99ca

If you get this relatively soon then you might be interested in what Desmos has to offer in terms of distance learning support. Check out the blogpost link below for all their efforts during this time and the webinar about distance learning.
Curriculum Tags: All
https://blog.desmos.com/articles/desmos-coronavirus/


If you want some PiDay links, however, check out my PiDay Pinterest Page
Curriculum Tags: All
https://www.pinterest.ca/davidpetro314/pi-day/





Video Links
I absolutely love this video from @3blue1brown about the exponential nature of the coronavirus infections. So well done (as are all of his videos)
Curriculum Tags: MCR3U, MHF4U, MCV4U
https://youtu.be/Kas0tIxDvrg



Image Links
As always @MonaChalabi has some interesting representations of data. The one here that I like seems so simple but it is the idea that the true number of corona virus infections is better predicted by the death rate.
Curriculum Tags: MDM4U
https://twitter.com/MonaChalabi/status/1238510270017933315






Saturday, March 7, 2020

Math Links for Week Ending Mar 6th, 2020

Featured Links 
I came across this site this week when looking for some nets for prisms. There are a literal tonne of different nets that you can download but I have to say the ones that I think are the coolest are the twisted prisms. So I had students do the standard cutting out, construction and calculations with triangular and rectangular prisms then let them try to create the twisted versions. They are a little trickier but kids were into it. 
Curriculum Tags: Gr7, Gr8


Resource Links 
I updated a post on my Found Data blog by turning the Walnut Crushing World record into a 3ActTask similar to @gfletchy's Rope Jumper. Good for proportions, unit rates and linear regression Get all the videos and data here:
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P

Make sure you look at the replies for the discussion on this one about the related geometric proofs of the Pythagorean theorem.
Curriculum Tags: MPM1D, MPM2D
Are you looking for some Algebra resources because you have to go online because of Coronavirus?
Curriculum Tags: All
https://twitter.com/MrCorleyMath/status/1235650990008868867
Opinion Links 
People make math mistakes in the media space all the time. Especially when it comes to big numbers. Rather than just trolling the offenders, I like @LukeSelfWalker's idea.
Curriculum Tags: All
https://twitter.com/LukeSelfwalker/status/1235926959579947009
Video/Audio Links 
Here is the last episode of the OAMEtalks podcast ]this season features @mathliisa & @MrsLeBeau talking about their upcoming webinar (Mar11) "A Fusion of Math and Special Education"
Curriculum Tags: All
https://talks.oame.on.ca/





This is a nice creative solution and certainly could be connected to optimization.
Curriculum Tags: MPM1D, MFM1P
https://twitter.com/panlepan/status/1234975571060252675
Ever travel on a mobius strip?
Curriculum Tags: All
https://twitter.com/Brzezinski_Math/status/1235295538024677378
Image Links 
I love these sorts of visual proofs
Curriculum Tags: All
https://twitter.com/jamestanton/status/1236290942363037699