Pi! I found inspiration for this hat while reading AARP, Feb/March 2015, p11, STAND BY FOR PIE “After a 100-year wait! March 14 offers math geeks - and pastry lovers – a once-in-a-century pleasure. On 3/14/15 at 9:26:53a.m. (and p.m.!) the date and time will reflect the first 10 digits of the mathematical constant pi (π). Many bakeries and pizza shops will have specials to make the day. Princeton University will hold an Albert Einstein look-alike contest.”

Pi Ripples Hat will start in the top with an I-cord, in honor of Albert Einstein, and work through (2)radius x pi to give the desired circumference. You’ll be creating a circular crown by making 10 increases every other round, then you’ll be ready for the 10 stitch repeats of the modified lace pattern Ripples, 400 Knitting Stitches, by Potter Craft, p205.

Gauge: 5 stitches = 1” Adjust needle size to match gauge.

Size: Infant: brim 12”, hat 14” circumference, height 7”
Child: brim 14”, hat 17” circumference, height 9”
Adult: brim 18”, 20”, hat 20”, 22” circumference, height 10”,11”
Materials: Wool or cotton blend in Worsted weight.
Yarn: Infant: 90 yards/ 1.5oz; ; Child: 125 yards/ 2oz; ; Adult: 150 yards/ 2.5oz;
Photo: Pi Ripples Hat is knit in Adriafil Stella Jacq;
100%superwash wool; color# 080
Needles: Size US#7, US#8, 12” or 16” circular needles,
set size US#7 double pointed needles
Notions: Stitch markers, tapestry needle

As celebration of the Pi Day 3/14/15,9:26:53am&pm, this pattern is offered as gift to you! Please, go to the blog post: http://marilynnsgardenknitdesign.blogspot.com/2015/03/pi-...
You’ll find pattern detail, and a great apple pie recipe.
Enjoy this pattern by making many Pi Ripples Hats as gifts to family & friends. I’d love to see your finished projects.
Thank you, Marilynn

The pattern pdf will print to 3 pages, you may want to print front & back.