My parents told us we get to go to Oma & Opa's today! I'm very excited. We'll celebrate pi with them. Pi is when you measure around a circle (circumference) and divide it by the part across the circle (diameter). I learned that from reading a book, about Sir Cumference. I have six books about Sir Cumference and they're all about math. My daddy tells me to stop reading and get so smart, but I think he's just kidding. I hope he is. I want to be really smart!