Happy Pi Day!

π Day is here - 3rd month, 14th day.

I'm still loving this video:

And I'm happy Pi Day is on a Monday so I can share it with all my classes.

Here's what I found online today:

• My post from last year,
• Some 'political' arguments about changing from π to τ (tau). Vi Hart says she doesn't usually blog about politics, but makes an exception for this. I guess we're sort of opposites; I'm pretty political, but haven't gotten worked up about π versus τ,
• Some history,
• The sound of π,
•  Probability and π,
• Finding π without a circle,
• A formula for the binary digits of π and an older formula,
• A trick and some puzzles,
• And of course more songs.

What's your favorite?