Math Links for Week Ending Nov. 21, 2014

I like this new site, Agree or Disagree. It's geared towards math but starts by showing you something and asking you a question that you have to agree or disagree on. They cover different topics (so far Quadratics, rates, volume and more) and every one comes with ppt file that has a full lesson and question suggestions. So for example, the first one has the video seen below. Then the lesson starts with the statement "The man's maximum height was no more than 50 ft. Agree or disagree" Then it gives potentially useful information and asks leading questions. The video itself is great for parabolic motion as it is done with a perfect side view so if you wanted to analyze it using something like Tracker, then you could. The PPT file has the video plus images with grids on them and even a strobe image for analysis
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P, MPM2D, MFM2P
http://www.aodmath.com/home

Kate at the f(t) blog has been laying down a bunch of good activities. The first of which is a game like Apples to Apples. The difference is that this game is used to connect students understanding of domain and range, it's called Graphies to Graphies. Check out her link below to get all the downloads and instructions.
Curriculum Tags: MCR3U, MCF3M
http://function-of-time.blogspot.ca/2014/11/graphles-to-graphles.html

Her next activity is dealing with parallel lines. It's a cool problem that takes advantage of a simple piece of paper that is folded on top of itself and the natural parallel lines that exist when done. It's definitely a problem they would have to chew on for a bit. 

Curriculum Tags: MPM1D, MFM1P

http://function-of-time.blogspot.ca/2014/11/we-got-problem.html

And I love her approach to inverse functions. Starting with code breaking and then snaking her way into actually reversing operations. Then leading students to an activity. The cards and instructions are at the link below.

Curriculum Tags: MCR3U

http://function-of-time.blogspot.ca/2014/11/gallery-walk-for-noticing-features-of.html

Kyle at the Tap Into Teen Minds blog continues to turn them out. This time a 3Acts about the percentage increase of a photocopied cheque. It is similar to this one by Dan Meyer but getting bigger rather than smalller.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P, MAT1L, MAT2L
http://tapintoteenminds.com/3act-math/big-cheques/

I like this activity from Misscalculate about trig calculations in word problems. The premiss is that students get cards with problems on them and then also hint cards that they can use if they need them. All the cards are ready for download at the link below
Curriculum Tags: MPM2P, MFM2D
http://misscalculate.blogspot.ca/2014/11/word-problems-with-hints.html

This is an awesome video from Numberphile on the math behind the computer animation of Pixar movies. Now I had mentioned a TED talk a while back about this. Well this is the same guy but he goes into much more detail. Just like the previous TED talk, there is mention of midpoints but more than that there is mention of types of polynomial function, limits, tangents and more.
Curriculum Tags: MPM2D, MHF4U, MCV4U
https://www.youtube.com/watch?v=mX0NB9IyYpU

I saw this at the mall today. So many different questions you could ask. Maybe volume, definitely percent. It's not a cut and dry problem.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P, MAT1L, MAT2L
https://twitter.com/davidpetro314/status/535871465141575680/photo/1

A top 10 of the most beautiful math equations. Most of them are technically from physics but I am OK with that. 

Curriculum Tags: All

http://www.cbsnews.com/news/the-11-most-beautiful-mathematical-equations/