Mathematicians interested in making math fun
have made this National Pi Day.
It's a math joke.
Pi is a mathematical constant, the ratio of a circle's circumference to its diameter, a number that is approximately 3.14. Which is today's date.
I would suggest you do a web search for the words pi day to get ideas on how to celebrate.
Me--- I will probably make a pie (or thaw a pie, whatever.)
And I'll give some thought to the circle, it's circumference and diameter. And be glad I rarely get out my compass anymore.
I will be grateful that somebody else somewhere drafted these circular pieced designs.
If I ever got the urge to piece something like this I'd go to the EQ7 program libraries and click on files like Wheels, Dresdens, and Compasses.
I'd make paper templates out of freezer paper (no seam allowance) so the arcs, radii and circumferiii would all be perfect. See Elsie Campbell's post on using freezer paper for intricate piecing here:
Dad's Plaids by Elsie Campbell
But I think I'll just sit down with a piece of pie until the urge goes away.