Mathematics will be the topic for STEM Saturday with Dr. Mackie from 9 a.m. to 12:30 p.m. Saturday, March 14, at the Gernon Brown Center, 1001 Harrison Ave., New Orleans. To register, visit STEMNOLA.com. The cost of a STEM Saturday session is $60, with financial aid available for those eligible for free or reduced-price school lunches.

National Pi Day is celebrated March 14 because the first three digits of the mathematical constant Pi are 3.14. This year is extra-special because the date of 3-14-15 corresponds to the first five digits of Pi: 3.1415.

If you really want to get into it — and the organizers of STEM NOLA really get into it — the moment to celebrate is on 3-14-15 at 9:26:53 a.m. That’s 10 digits of the mathematical constant: 3.141592653.

Calvin Mackie, a former engineering professor at Tulane University, founded STEM NOLA to expose future innovators, creators and makers to opportunities in science, technology, engineering and math.