Curriculum Tags: Gr7, Gr8, MAT1L, MAT2L

http://mathfest.blogspot.ca/2015/04/two-new-learning-tools-available.html

We added another Tarsia Puzzle to our Engaging Math Blog. The puzzles are a nice quick way to practice skills. Check out the link for the full description. This one is on converting between factions, decimals and percents.

Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P

http://engaging-math.blogspot.ca/2015/04/tarsia-puzzle-fractionsdecimals-and.html

A few weeks ago I let you know about a new site called WODB (Which On Doesn't Belong. The idea is that you show students a set of four pictures and they have to determine which one doesn't belong. And one of the nice things is that there is a way that each of the four pictures might not belong. So now Mary at the Making Math Meaningful has a tweak. Show them only three (or two images) and have them figure out what that fourth image could be. Nicely done.

Curriculum Tags: All

http://marybourassa.blogspot.ca/2015/04/wodb-incomplete-sets.html

Another straggler from Pi Day. Asking the question: for which of these cylinders is the height more than the circumference. And getting a surprising result when considering the can of tennis balls. This reminds me a bit of this one from Andrew Stadel.

Curriculum Tags: Gr8

http://blogs.scientificamerican.com/guest-blog/2015/03/14/how-many-digits-of-pi-do-you-really-need-to-know-find-out-with-this-bar-bet/

If you were on Facebook this week then you probably saw that Singapore math problem about Cheryl's birthday. Spoiler alert, here is a solution from Numberphile as well as one done by Hamilton Tigercats (CFL for you Americans) lineman @Peterdyakowski. Here are both videos. I like Peter's because it's short and sweet and I like the systematic way that Numberphile goes about it.

Curriculum Tags: All

https://www.youtube.com/watch?v=emiMj8cCL5E

http://www.macleans.ca/multimedia/video/the-macleans-genius-explains-how-he-solved-the-viral-singapore-equation/

Follow the link on this one to see a neat video on comparing the fastest Olympic 100m swim times from the late 1800s on. I'm still not as fast as the slowest guy here.

Curriculum Tags: Gr7, Gr7, MBF3C, MDM4U, MAP4C

http://www.nytimes.com/interactive/2012/08/01/sports/olympics/racing-against-history.html?_r=0

Dear Data is a project where two women who live in other parts of the world document their lives through data about themselves via postcards. The thing I like about this is all the cool representations of data. I think that you could replicate this in a class where students create data postcards about themselves. Give it a try.

Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U, MAP4C

http://www.dear-data.com/

I am not sure how we came up with this but me and a colleague of mine thought of what if you could have something to help you out when you were having difficulty with a math problem. And that lead to Mathtercard. Thanks to my son for doing the Photoshop work.

https://twitter.com/davidpetro314/status/587429508929740800/photo/1

```
What do you do when you don't have the knowledge to solve a math problem? Use Mathtercard credit to help #mathchat pic.twitter.com/Qr2w6IgJx4
```

— David Petro (@davidpetro314) April 13, 2015

Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U

https://plus.google.com/117663015413546257905/posts/B16McQB6Vn2

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