You can find just the song here: http://vihart.com/music/gauss12days.mp3.
Send in your submission for the Math Teachers at Play blog carnival by Wednesday night.
While you’re waiting for Friday’s carnival, check out the new Carnival of Mathematics.
These advent calendars feature a new math puzzle or game for each day of December until Christmas. Many of the activities are designed to be done in a group, but they work fine for home school families who play with math together. Enjoy!
An Apollonian pumpkin patch and Sierpinski candy corn:
Great ideas for mathy porch decorations:
My favorite blood-thirsty online game from Murderous Maths:
And here’s some less-violent holiday math for the younger set:
Do you know of more mathy fall fun? Share your links in the comments section!
So if working in radians you hate
(How can 
Make your life simpler now
By just switching to τ
= 6.28318…
—Denise Gaskins
6/28 is τ Day.
Tau = τ = one turn around the circle = 
How do mathematicians celebrate τ Day?
Protest! Share anti-π propaganda.
And eat two pies…
Just as I was looking for a creative Valentine’s craft for Kitten, this showed up in my inbox:
Xi at 360 provides step-by-step instructions, with photos:
And for more Valentine’s Day fun:
If you haven’t subscribed to Vi Hart’s blog yet, what are you waiting for?
Check out Nick Johnson’s Story of the innertube as a histogram.
Celebrate Math Storytelling Day by making up and sharing math stories. Everyone loves a story, so this is a great way to motivate your children to play around with math. What might a math story involve? Patterns, logic, history, puzzles, relationships, fictional characters, … and yes, even numbers.
What story will you tell?
* * *
This blog is reader-supported.
If you’d like to help fund the blog on an on-going basis, then please head to my Patreon page.
If you liked this post, and want to show your one-time appreciation, the place to do that is PayPal: paypal.me/DeniseGaskinsMath. If you go that route, please include your email address in the notes section, so I can say thank you.
Which I am going to say right now. Thank you!
“Math Storytelling Day” copyright © 2010 by Denise Gaskins. Image at the top of the post copyright © Nick Johnson via Flickr (CC BY 2.0).
Denise Gaskins' Let's Play Math 