## Friday, June 3, 2016

### Math Links for Week Ending June 3rd, 2016

I really love this activity from @alexoverwijk. And beyond the activity, I love all the detail that he includes as the history of the lesson study that went with the activity (the blog post is loooong but great). The activity has students put into groups and each given an x value. Then each group calculates a y value for a series of functions using that x value. All of those y values are plotted on a number line strip and then all the strips are placed on the wall ordered by x value. What results are the graphs of all of the functions. So good. There are some great suggestions for extensions to later grades and I love that he included all the comments from the teachers as they did the lesson study.
Curriculum Tags: MFM2P, MPM2D
http://slamdunkmath.blogspot.ca/2016/05/the-co-ordinate-grid-multiple-number.html

I have started to put my GSP sketches online (here) but I just found this site that has all kinds of online GSP sketches. So far my favourite one is this one for investigating quadrilaterals. Besides the measuring tools I love that as you drag the vertices, the labels of the types of quadrilaterals change as required. But check out all the other sketches too
Curriculum Tags: Gr8, All
http://www.sfu.ca/geometry4yl.html

A couple of posts from Better Qs. This one from @MrJohnRowe is a little tweak on a classic trig question. I like how several answers are given and students are asked to determine what question is being asked to get each answer. Download the worksheet at the link below
Curriculum Tags: MCR3U, MCF3M

And the second from @srcav is a nice trig simplification equation. It looks complex but then wait to see what it simplifies to.
Curriculum Tags: MCR3U
https://betterqs.wordpress.com/2016/05/08/lovely-simple-trigonometric-puzzle/
Some Desmos Friday fives to get caught up on. This time with an neat activity with families of polynomial functions, roots of polynomial functions, neat data set about marathon times, and there is a new Activity Builder feature that allows students to draw lines right on the graphs (sketch). Some of those cover linear equations, another marathon activity, a neat data activity for predicting homerun records, and more
Curriculum Tags: MHF4U, MDM4U
http://blog.desmos.com/post/145022867147/friday-five-for-may-27
http://blog.desmos.com/post/144679317002/friday-five-for-may-20

Though it kind of bugs me that this is only available for teachers in the US, I thought I would mention it anyway. Are you a creator of Desmos activities? If so, maybe you want to apply get a Desmos Teaching Fellowship. See the link below for details
Curriculum Tags: All

I like this Keynote that @paul_math did for the Ontario College Math Association with the title "The Evolving Thinking Problem-Solving Classroom". You can see the whole keynote here but I think he summed up the way I have been thinking with this self quote "They are inflexible in their thinking because we made them rigid in their learning".
Curriculum Tags: All
http://mathsoxlearner.blogspot.ca/2016/05/the-evolving-thinking-classrom-ocma.html

I thought this kind of summed up how I used to teach years ago, I think it's a good reminder that sometimes we can focus too much on procedure. It kind of juxtaposes well with the post directly above.
Curriculum Tags: All
https://twitter.com/KentHaines/status/675779507652050944

I seem to be talking more and more with people who are experimenting with going gradeless. Here's a post from @HTheijsmeijer talks about her journey towards that goal.
Curriculum Tags: All
http://byodasap.blogspot.ca/2016/05/thinking-about-going-gradeless.html

This is older but I was reminded of it recently. It's @stephenStrogatz talking about parabolas and pendulums on Radiolab
Curriculum Tags: MPM2D, MFM2P, MCF3M, MBF3C, MCR3U
https://www.youtube.com/watch?v=rdSgqHuI-mw

Who needs to read the whole article when you can look at @wheeler_laura's Sketchnote?
Curriculum Tags: All
https://twitter.com/wheeler_laura/status/738879532367679488
Some good trignonometric humor
Curriculum Tags: MHF4U
https://twitter.com/SciencePorn/status/737418649535950848/photo/1
Collect some data on Doritos Roulette and maybe Doritos will contact you
Curriculum tags: Gr7, Gr8, MBF3C, MDM4U
https://twitter.com/MathletePearce/status/738435615415537664/photo/1