## Friday, December 11, 2015

### Math Links for Week Ending Dec 11th, 2015

If you have been using Desmos then you already know about the Desmos Activity builder. A product that continues to get better and better. As people start to create those activities, Desmos has started to vet them and make them available via their search. There are many there now that span a bunch of topics and you can take any one of those and run it in your class by starting a new session. But you may not always like those activities the way they are and want to tweak them. Well you can now take any activity and create a duplicate that will allow you to edit any part of the activity or even add your own slides. Just click on any activity, then the Learn More button and then finally on Duplicate this Activity. Once again, Desmos has listened to the Internet and made what they have done even better.
https://teacher.desmos.com/browse
Curriculum Tags: All

Last week I created this simple Desmos Activity with Nick Basic. It is not meant to be a very long activity but it's purpose is to introduce the concept of x and y intercepts.
Curriculum Tags: MPM1D, MFM2P
https://teacher.desmos.com/...../5661d9faa75709a709db400a

When you look at the image of the algebra tiles to the right you might be surprised to find out that it was created with Desmos. @nathankraft1 used almost 150 lines of code (and some pretty complex ones) to model binomial multiplication/factoring. Just move the sliders and you can model any binomial multiplication in the form (ax + b)(cx + d). I can't imagine how many hours of coding that took but thankfully he took the time to do it. Thanks to @marybourassa for pointing this out.
Curriculum Tags: MPM2D, MFM2P
https://www.desmos.com/calculator/tfpuxpz9hr

I have been adding some posts to my Found Data blog. The first one this week takes the data from the fivethirtyeight.com post on Boy Band lyrics. I actually mentioned this data set before but at that point you could only see the table of data. I have since transferred all of it to a Google Sheet so that you could create some bar graphs for analysis.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
http://found-data.blogspot.ca/2015/12/boy-band-data.html

The second post was also from fivethirtyeight.com but this one is part of their interactive series. This one is a series of time based graphs on the last 8 years of popular keywords on the information site Reddit.com (that is from over 1.7 billion posts). The page will load random sets of search terms and create a comparative graph of them. The nice thing is that it will then give you the opportunity to download the CSV of the data.
Curriculum Tags: Gr7, Gr8, MDM4U, MAP4C
http://found-data.blogspot.ca/2015/12/reddit-discussions.html

Navigating all of the great resources being shared by teachers all over the web is becoming difficult with so many teachers actually sharing now. @MrOrr_Geek has create a bit of a tutorial of how to manage them via Twitter and Evernote as well as RSS feeds on Feedly. Take a look and get organized.
Curriculum Tags: All
http://mrorr-isageek.com/lets-find-a-good-math-lesson-online-with-mtbos/

And the "war" continues. Are facts or concepts more important in math class. The fact is that the war isn't really real. The reality is that both factual fluency and conceptual understanding are important and @mathletepearce discusses the nature of these things on this post.
Curriculum Tags: All
https://tapintoteenminds.com/are-math-facts-the-urgent-student-learning-need/

I was reminded of this Family Guy clip earlier this week. Fun despite the mention of a "ho"
Curriculum Tags: All

And maybe this poem about love and math
Curriculum Tags: All

Pretty cool visualizations of factoring here
Curriculum Tags: Gr7, Gr8
http://blog.matthen.com/post/120471240676/visualising-numbers-100-243-and-12-by-splitting

I really like this cool fraction task. The correct answers weren't straight forward and it did require you to really think about parts of a whole when the whole was irregularly shaped. Thanks to @MrSoClassroom for pointing out this one.
Curricuculum Tags: Gr7, Gr8, MPM1D, MFM1P
Gotta love this FoxTrot comic on the Fibonacci sequence.
Curriculum Tags: All
I love this bottle packing context for optimization. Very "Real World". Perfect when talking about why we might want to optimize
Curriculum Tags: MPM1D, MFM1P

I always love seeing this when I am flying across the country. Definitely could do some work area of composite shapes with this one. Thanks to @bkdidact for this one.
Curriculum Tags: MPM1D, MFM1P
And of course what is a week of links without some sort of meme?
Curriculum Tags: MHF4U