If you know some middle- or high school-aged kids, take them a pie today since today is March 14th, or when written out, 3.14—the first three digits of pi. So, with a 12” apple or lemon meringue, you can use this sweet coincidence as an opportunity to subtly impart some geometry knowledge on your children. Believe me—they’ll be more open to it than you think! Measure the diameter and radius of your mathematical confection (that would be the span across the pie, and from the center to the edge, respectively). With that bit of information, they can tell you the circumference of the pie crust itself. After the math part, simply enjoy the time with your tweens and teens. To truly maximize your Pi Day, make your pie together, from scratch.