Just a quick note for you this morning because I thought you might like this too. When I saw this, I just knew I’d have to share it with the kids! They have taken to memorizing π. (I think DD knows π to 31 digits and her best friend knows it to 50 digits (in two languages, she tells me!)! Um… I’m not sure why, but it’s impressive!). The illustration below makes π so clear, doesn’t it!
This image has been selected as picture of the day (and picture of the month) in various places. It does such a fabulous job helping kids (and adults) understand pi!
Animation of the act of unrolling a circle’s circumference, illustrating the ratio π as featured on Wikipedia