Math Links for Week Ending Oct. 14th, 2016

I am a huge fan of @AlexOverwijk's deep lesson analysis. His crew at Glebe Collegiate clearly work together well. In this 5 day lesson they start with scavenged bike rims and start with circles and end with trig. He's got all the details in the post, do not miss it.

Curriculum Tags: MHF4U
http://slamdunkmath.blogspot.ca/2016/09/analyzing-bike-rim-in-5-days.html

I really like this adaptation of @iisanumber's by @SamJShah. The premiss is that students critique other student's work. One thing I like is that practice of students writing two positive things on the front of the post it and some things to work on on the back. This could easily be adapted for any topic or grade level. Check out both posts below.
Curriculum Tags: All
https://samjshah.com/2016/09/22/nominations-part-i/
https://samjshah.com/2016/09/22/good-conversations-and-nominations-part-ii/

This is old but damn I love a good extreme sports stunt to reveal some parabolic mathematics
Curriculum Tags: MFM2P, MPM2D, MBF3C, MCR3U, MCF3M
https://www.youtube.com/watch?v=L5N7R9Wbe_E

And the strobe image of the above video
Curriculum Tags: MFM2P, MPM2D, MBF3C, MCR3U, MCF3M
http://www.worldrecordacademy.com/stunts/img/101482-longestjump-rallycar-TravisPastrana.jpg

Math and Knitting? Why not? Some pretty cool stuff here. Thanks to @AlexBellos for pointing these out.
Curriculum Tags: All
https://www.theguardian.com/science/alexs-adventures-in-numberland/2016/oct/03/meet-the-mathekniticians-and-their-amazing-woolly-maths-creations

These show up on Facebook all the time with the tag line "only for geniuses". I like this one though because it is almost entirely symbolic.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://www.facebook.com/UNBfacts/photos/a.241405075971682.47251.241392719306251/1063656713746510/?type=3&theater

I like problems like this. Ones that at first glance seem like they might require some complicated math to solve but with some good problem solving and spatial reasoning, it's totally solvable. I think you could probably give this to students in just about any grade and someone could solve it.
Curriculum Tags: All
https://betterqs.wordpress.com/2016/10/13/circle-puzzle/