Math Links for Week Ending Dec. 9th, 2016

I create this introduction to histograms last week. It has a couple of card sorts (some physical and some Desmos) with some other activities. Get all the downloads below
Curriculum Tags: Gr8, MBF3C, MDM4U
http://engaging-math.blogspot.ca/2016/12/introducing-histograms.html

I love some of the little and simple activities that Desmos is building using Activity Builder as their backbone. Here are a few that they have released recently.

This first one is on solving equations. In general, solving equations is not a very engaging activity but here they have given students a challenge. Create an equation that has a solution closest to zero. And because of some of the Desmos only features it is pretty interactive.
Curriculum Tags: Gr8, MPM1D, MFM1P, MFM2P
http://blog.desmos.com/post/153054331927/friday-fave-for-november-11

The next one is on solving systems of linear equations. It starts really harmlessly by asking if there are any numbers that have a difference of 8 and a sum of one. Again, by using some of their tools you get interaction and then when they start entering their choices you get graphical representations to lead directly to the intersection of two lines.
Curriculum Tags: MPM2D, MFM2P
http://blog.desmos.com/post/153361804434/friday-fave-for-november-18


Finally a card sort and questions that help distinguish between linear and non linear relations. It is not that long (like the others) but incorporates challenges that help solidify concepts for students.
Curriculum Tags: MPM1D, MPM2P
http://blog.desmos.com/post/153959275262/friday-fave-for-december-2



And I guess this is a bonus one from @ddmeyer. I love the video series that this one on graphical intersection is based on this cool football footage. They have made it into a nice Desmos activity of course.
Curriculum Tags: MPM1D, MFM1P, MFM2P
http://blog.mrmeyer.com/2016/the-problem-with-multiple-representations/

Do you want to know what neuroscience says about how to make fractions stick? Then read on. Thanks to @mathletepearce for this on.
Curriculum Tags: All

https://ww2.kqed.org/mindshift/2016/11/21/what-neuroscience-can-tell-us-about-making-fractions-stick/

Nice animation from @MrOrr_Geek on maximizing area when constraining perimeter.
Curriculum Tags: MPM1D, MFM1P
https://twitter.com/MrOrr_geek/status/806935261556838402

Can you help me with a new problem? What do you notice? What do you Wonder? #mtbos #mathchat pic.twitter.com/xWJkLVXXpg

— Jon Orr (@MrOrr_geek) December 8, 2016

I love this one from @Errs5. I like it because you can do it and not know anything about the area of a circle.
Curriculum Tags: Gr8, MPM1D, MFM1P
https://twitter.com/Errs5/status/805565775796965376

.@ddmeyer Is the area of the yellow less than the area of ONE circle, equal to ONE circle, or more than ONE circle? please RT pic.twitter.com/cJ52QSai8L

— MathDDSB (@Errs5) December 5, 2016

Something nice and simple on multiplying decimals from @Danluevanos after a request from @robertkaplinsky.
Curriculum Tags: Gr7, Gr8
https://twitter.com/danluevanos/status/806859692387418112

@robertkaplinsky @coachsievers What about something like this? pic.twitter.com/MdAG36nAoE

— Daniel Luevanos (@danluevanos) December 8, 2016