My husband is big into Math and Science. His Bachelor's Degree in Secondary Science Education, although he has never taught beyond student teaching. Every year on Pi Day, he gets or makes some food that is round for dinner along with a pie. He then involves our boys in measuring the circumference and diameter of each item and showing where Pi figures in. This year, our 2nd grader was actively involved in the measurement process while the older boys did the calculations. I, on the other hand, took a few pictures and sat back and enjoyed the chicken pot pies for dinner and the apple pie for dessert.