There are many fun and innovative ways to celebrate Pi Day in your classroom and beyond – you probably already use it as a jumping-off point for key mathematical lessons. If you're in need of something to invigorate your tried-and-true Pi Day traditions, NCTM has you covered! We've gathered our best pi related activities from each of our publications and resources that will suit your grade level. Try them today!
Every year since the first Pi Day celebration in 1988, some opportunity arises to marvel anew at the “mystery” of —the ratio of the circumference to the diameter of a circle, approximated as 3.141592653. . . . This ratio remains the same no matter the size of the circle, which makes