Curriculum Tags: MCR3U, MCF3M

http://mathequalslove.blogspot.ca/2016/06/evaluating-functions-puzzles-open.html

http://mathequalslove.blogspot.ca/2016/06/functionnot-function-open-middle-problem.html

The first time I heard of Happy Numbers was in the book "Adam Spencer's Big Book of Numbers". in this task, @MarkChubb3 uses the concept of happy numbers to have students practice perfect squares.

Curriculum Tags: Gr7, Gr8

https://buildingmathematicians.wordpress..../happy-numbers/

If you ever want to give students an example of the dangers of exponential growth then this story of a hacker who's "worm" inadvertently shut down the most popular site on the Internet (at the time) and did so because it grew exponentially. Listen to his story (starting at 1:19:17 ) on how he shut down MySpace (this was clearly a while ago) and how it eventually got him banned from using computers. @SamyKamkar is a hacker and he is being interviewed by venture capitalist and self experimenter @tferriss. It's a great (and long) podcast but the story in question starts at 1:19:17. Have a listen.

Curriculum Tags: MCF3M, MCR3U, MBF3C

http://fourhourworkweek.com/2015/05/02/samy-kamkar/

Some new activities pointed out on the @Desmos Friday Five. A few from the last few weeks that I liked were Put the Point on the Line which gives a nice intuitive way to introduce the idea of slope a neat little scatter plot activity called Commuting Times that includes a Which One Doesn't Belong at the end. I also like Parabola Slalom which makes good use of the new sketch feature. And on today's Friday Five there are a bunch of previously shown activities all dealing with parabolas, like Match my Parabola or Will it Hit the Hoop.

Curriculum Tags: MFM1P, MPM1D, MPM2D, MFM2P, MCR3U, MCF3M, MBF3C, MDM4U, MAP4C

http://blog.desmos.com/post/146081323386/friday-five-for-june-17

http://blog.desmos.com/post/146425856530/friday-five-for-june-24

http://blog.desmos.com/post/146753569437/friday-five-for-july-1

This is older but still quite relevant to 3D point plotting. I think it's could be a nice application of 3D vectors.

Curriculum Tags: MCV4U

https://www.youtube.com/watch?v=HVhVClFMg6Y

Who doesn't like geometry in nature. Thanks to @KMarkPet for this one

Curriculum Tags: All

http://timewheel.net/image-25-stunning-photographs-of-sacred-geometry-and-fractals-in/

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