Curriculum Tags: All

http://blog.desmos.com/post/142086213572/friday-five-for-march-32

http://blog.desmos.com/post/142477219864/friday-five-for-april-8

http://blog.desmos.com/post/143235991157/friday-five-for-april-22

Curriculum Tags: MCR3U

http://www.mrbartonmaths.com/blog/rationalise-the-denominator-guess-the-misconception/

Everything has to start somewhere. And even things that are so common have a beginning. In this case it's the story of where the idea of "average" came from. You can listen to this 10 min story on the origins of average by the BBC radio Show More or Less and wow your students with anecdotal info about mathematics.

Curriculum Tags: All

http://www.bbc.co.uk/programmes/p03qprk7

I love when we see connections to problems that we have not seen before. In this post @samjshah makes the connection between the classic "painted cube" problem and the binomial theorem. I love the use of the different colour snap cubes to indicate the cubes with different numbers of sides "painted".

Curriculum Tags: MDM4U

https://samjshah.com/2016/04/20/a-new-insight-on-the-famous-painted-block-problem/

I have mentioned the the site Open Middle before. This site was inspired by something @ddmeyer spoke of and spearheaded by @roberKaplinski, @Math_m_Addicts and @Anderson02B to collect problems that have a set beginning & ending but the pathway from one to the other was varied (ie Open Middle). In this post @Mr_Stadel points out a neat technique via Google Sheets to facilitate students taking an open middle problem and sharing their solution but also verifying other groups solutions.

Curriculum Tags: All

http://mr-stadel.blogspot.ca/2016/04/open-middle-and-google-docs.html

Another Google doc math related item is the plug in Gmath which now has handwriting recognition. So entering equations is potentially much easier now (though to be super useful you need a device with a touch screen). Thanks to @joeSisco for pointing out this one

Curriculum Tags: All

http://mathtechtips.blogspot.ca/2016/04/gmath-handwriting-recognition.html

@ddmeyer has popularized the idea of a 3Act Task. In this post @mathletepearce talks about why he thinks they are so good. The one point that resonated with me the most was the fact that they typically are low floor, high ceiling tasks that are good for all students.

Curriculum Tags: All

https://tapintoteenminds.com/what-makes-3-act-math-tasks-so-effective/

Near as I can tell at the NCTM annual conference this year the there was a secondary mini conference called ShadowCon. My thinking was that this was kind of like an Ignite session without some of the constraints of slide progression. None the less, there were some interesting talks that weren't all directly related to Math. Here is a link to some of them. Some just have slide decks like being good at math (by @KanekaTurner) or becoming a better story teller (by @gfletchy) while others include a video of the talk like this one on Empowerment from @RobertKaplinski. And all of them seemed to have some "Call to action" afterwards via discussion board. For example, see Robert's final slide below. You can enter the discussion on any of these so follow the link to check them out.

Curriculum Tags: All

http://meetings.nctm.org/tag/shadowcon2016/

Apparently there is a competition in the UK called Famelab where contestants vie for a chance to be the clearest explainer of a scientific topic. Here @kyledevans explains why loving a person exponentially more each day is actually not the most desireable mathematically. Spoiler alert, the best way is to do so logarithmically. Watch here to find out why

Curriculum Tags: MHF4U, MCV4U

https://www.youtube.com/watch?v=vz1RzRyH5Oc

Sometimes a simple tweak is all that is needed to make things more interesting for students. In this case it's changing "justify your answer" to "convince me". Thanks to @matthewOldridge for this one

Curriculum Tags: All

We lost Prince this week and so Five Thirty Eight created a graphic to represent his workOnce again a simple 'convince me' question blows me away. #msmathchat #MTBoS #teach180 pic.twitter.com/7WavmZIqat— Debbie Hurtado (@DebbieHurtado) April 24, 2016

Curriculum Tags: Gr7, Gr8, MAP4C, MDM4U

http://fivethirtyeight.com/features/princes-purple-reign-in-one-chart/

Although I never agree with the way these are asked (in this case the post said "only 1 in 1000 will get this"). I do like the actual question in this case where it kind of leans towards linear relationships.

Curriculum Tags: MFM1P, MPM1D

https://www.facebook.com/photo.php?fbid=1048238048581194&set=a.215489018522772.53022.100001850278047&type=3&theater

Here's a fun geometry animated gif

Curriculum Tags: MCF3M, MCR3U, MCT4C

http://www.pausaycafe.com/wp-content/uploads/2014/04/5.-Las-l%C3%ADneas-rectas.gif

A neat question highlighted by the Better Questions blog. I like the discussion about how easily you may or may not see the path to the solution. It is interesting how just changing that diagonal orientation changes the difficulty

Curriculum Tags: Gr8

https://betterqs.wordpress.com/2016/04/27/an-interesting-area-puzzle/