Math Links for Week Ending October 31st, 2014

It's Halloween so here is a new one from our Engaging Math blog. It is a review of proportional reasoning with a Halloween theme.
Curriculum Tags: MFM1P
http://engaging-math.blogspot.ca/2014/10/halloween-proportional-reasoning-review.html





I thought this was neat. A Teacher asks students to create a problem. The student creates one that has to do with Starwars. The dad posts the problem on Facebook and it somehow gets to JJ Abrams (the director of the current series) and he responds with a problem of his own. It really does speak to the power of the Internet and social media. Thanks to Mark Esping for this one.
Curriculum Tags: All
http://io9.com/8th-grader-pens-impressive-algebra-problem-about-star-w-1642715847
http://toybox.io9.com/jj-abrams-has-solved-that-awesome-8th-graders-star-wars-1645210142

I am starting to clean up my Geometer's Sketchpad files. I have a bunch of sketches that I am slowing moving over so they are iPad compatible. Here is the first one. It's a practice file for determining the distance between two points. You can download it at the link below and see how it works with this video.
Curriculum Tags: MPM2D
http://engaging-math.blogspot.ca/2014/10/geometers-sketchpad-practice-distance.html

I like activities that take the more mundane aspects of math and pimp them up a bit. And you can always count on Julie at I Speak Math to do the "pimpin". In this one its all the parallel line properties. I like the part about putting the lines on the floor and especially the Dance Dance Transversal video.
Curriculum Tags: MPM1D, MFM1P
http://ispeakmath.org/2014/10/24/transversals-parallel-lines-and-discovering-angle-properties/

From Mr Orr math geek a collection of resources that seem to fit grade 9 applied math well
Curriculum Tags: MPM1P
https://docs.google.com/spreadsheets/

I have always thought that playing games was good for numeracy. Whether it is rolling dice or something like guessing. It's all good for helping students become numerate.
Curriculum Tags: All
http://blogs.kqed.org/mindshift/2014/02/how-guessing-games-help-kids-solve-math-problems/

In preparation for Pi Day Next year (March 14, 2015 will be 3.14.15) here is a new video from Numberphile where they literally create a mile of Pi. That's a million digits (spoiler alert, the last digit is 1). Actually they didn't do it because of Pi Day but because they have surpassed 1 million subscribers on their YouTube channel. That is pretty cool. This video has everything. Fun Pi facts, interesting number sequences, Feynman points, quad copters, you name it. And if you want a fraction of that mile then you might try printing the first 1000 digits here.

Curriculum Tags: Gr8, MCR3U, MCF3M, MHF4U

Math Art that is 3D Printed. Enough Said

Curriculum Tags: All

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

And a couple of videos from Tap Into Teen Minds on maximizing area
Curriculum Tags: MPM1D, MFM1P
http://tapintoteenminds.com/2014/10/01/maximizing-4sided-enclosures/

http://tapintoteenminds.com/2014/10/02/maximum-area-3-sided-enclosure/

More from Name This Data. I mentioned it before and here are a bunch of new ones. They are mostly US referenced but I still really like the idea of showing some data and then asking what it could be of. Try it in your classes.
Curriculum Tags: Gr7, Gr8, MBF3C, MAP4C, MDM4D

Number 10 (answer)

Number 11 (answer)
Number 12 (answer)