Math Links for Week Ending Feb 22, 2013

Too bad I didn't catch this one for last weeks post but better late than never. This is a TED-ED talk about the mathematics of online dating. Specifically how the site OKCupid calculates its matching algorithm. Some really simple math but ingenious. Could easily be used to talk about statistics and the geometric mean or just the nature of what an algorithm is and why computers are so good at calculating them.
http://www.youtube.com/watch?v=m9PiPlRuy6E
Curriculum Tags: MDM4U

Here is a great data set about taxi cab fairs in Toronto. Totally linear data that could be adapted to any grade 9 or 10 applied or academic class. 

http://www.taxiautofare.com/ca/taxi-fare-card/Toronto-Taxi-fare

Curriculum Tags: MFM1P, MPM1D, MFM2P, MPM2D

Chris Hadfield talks about some applications of using math on the ISS. If you have seen any of Chris' videos you know that he has been a great ambassador for the space program (just check out is AMA - ask me anything - on Reddit). Anyway in this brief video he refers to Pythagorean theorem and trig

http://www.youtube.com/watch?v=YM9he7roAwk&sns=em

Curriculum Tags: Gr8, MFM1P, MPM1D, MFM2P, MPM2D

 

One of the latest from Numberphile is a great heads up for Pi day. This time about how precise do you need to know Pi to calculate the circumference of the universe. More specifically, how many decimals are needed for most practical applications.

http://www.youtube.com/watch?v=FpyrF_Ci2TQ

Curriculum Tags: Gr8

Nice images of what 200 calories look like for different types of food. Its a different sort of visualization than a regular graph. Thanks to Mark Esping for this one.

http://themetapicture.com/what-does-calories-really-look-like/

Curriculum Tags: Grade7, Grade8, MBF3C, MDM4U