If you're in the know when it comes to numbers, you know March 14 is Pi Day.
Pi is the mathematical approximation 3.14, which is used to find the area and circumference of round objects.
Cleveland Elementary School in Allentown held its annual Pi bee Thursday afternoon.
Fifth grade students were challenged to recite Pi as far past the decimal point as they could.
The winner memorized 202 numbers -- 3.14159265358979323846264338327950288
At the end of the competition, the top two students got to pick a teacher to pie in the face.