Curriculum Tags: MPM1D, MFM2P

http://mrorr-isageek.com/slope-clothesline/

I love it when teachers take it upon themselves to create a whole new genre of math problems. Not that fractions are some new invention but @NatBanting has created his new site Fraction Talks where he posts images where students have to determine what fraction of the image is shaded. Or as he describes it:

"I introduce the structure much like a number talk. I project an image, choose a section to be shaded, and ask students, “What fraction is shaded?”. Students develop an answer (and reasoning) individually, and signal to me when they are done (usually with a thumbs up). I then extend invitations to share."The images are categorized by type so that you can have your own fraction talks in your classes. Plus you can submit your own images. Check it out.Thanks to @marybourassa for pointing this out

Curriculum Tags: Gr7, Gr8

http://www.fractiontalks.com/

We created this activity years ago and finally are just getting around to posting it. The premiss is simple, students sort cards that have algebraic equations and expressions and matching statements. There are also Explain Everything versions as well for those of you who have iPads.

Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P

http://engaging-math.blogspot.ca/2016/02/number-sentences.html

It's no surprise to anyone who knows me that I am a big fan of the Five Thirty Eight site. Lately they have been posting a weekly Riddler. They are math and logic related, like this one that has it's basis in the circumference of a circle. They post the new riddler every Friday and have the solution to the previous week's on that Friday post. You have a couple of days to submit your answer (if you are into that sort of thing). But if you are looking for some brain teasers for your class, then this might be a great place to start.

Curriculum Tags: All

http://fivethirtyeight.com/?s=the+riddler

There are a lot of reasons to love Wolfram Alpha. I was reminded of one of them this week. Type in the phrase "planes above" and you get info on aircraft in the area (based on your IP address). How does that connect to math? It's a great application of trig ratios. You get the altitude, slant distance and angle of elevation. All of these can be used to verify the properties of trig ratios.

Curriculum Tags: MPM2D, MFM2P, MBF3C, MCF3M, MCR3U

http://www.wolframalpha.com/input/?i=planes+above

The first part of this video from @standupmaths is a neat application of parabolas (image, a building that lights things on fire). The rest of the video is a derivation of the definition of the parabola (including some calculus). So you might want to just stick to the first part.

Curriculum Tags: MPM2D, MFM2P, MBF3C, MCF3M, MCR3U

Here is a great Expected value question from @MathGarden. I love how he points out that a great math question doesn't need asking.

Curriculum Tags: MDM4U

https://twitter.com/Mathgarden/status/700737223117811712/photo/1

And the "Only Genius" posts keep showing up on Facebook. I'm with @mathletepearce with the idea that all we have to do is pose our questions to kids this way and they will do them without complaining.A good math question doesn't need asking:) #probability #expectations #Gametheory pic.twitter.com/fRYhDl2Qc3— Sunil Singh (@Mathgarden) February 19, 2016

Curriculum Tags: Gr7, Gr8

https://scontent-yyz1-1.xx.fbcdn.net/hphotos-xfa1/v/t1.0-9/12744213_342667029402340_8251468416875614500_n.jpg?oh=180506ab4de25bd3d6941cc85ebbaaa1&oe=57346CBF

And another one on order of operations

Curriculum Tags: Gr7, Gr8

https://scontent-yyz1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/10273978_1728727597451510_565607596159149094_n.jpg?oh=4249c54e33bee6240d4fffe050eb2847&oe=5765DBCE

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