pi on pi
Nod: Celebrate Pi Day
#ThinkGeek #ThinkGeek #Symbol #Cube #Trays Pi Symbol Ice Cube Trays http://www.seapai.com/product.aspx?PID=1804123
For those crafty people out there! Pi Day
pi | in special PI Day activities, celebrated the day bysinging PI ...
pi | Pi Day
How cool is this? Perfect for Pi Day, or really any day.
pi | greek letter pi to represent this value pi t shirt
purple pi | Purple Pi Symbol Poster