When:Friday, March 9 - Thursday, March 15
Target Audience:K-12 Students and Educators, Parents, Museums, Science Centers and Planetariums
Update: March 15, 2018 – The answers to the 2018 NASA Pi Day Challenge are here! View the illustrated answer key
On March 14, NASA will join schools, students and science centers across the U.S. as they celebrate one of the most well known and beloved numbers: pi. Used throughout the STEM world – especially for space exploration! – pi is the number that results from dividing the circumference of any circle by its diameter. Pi can be and often is rounded to 3.14 (even though its decimals never end), which is why 3/14 has been designated National Pi Day.
This year, celebrate Pi Day with NASA with these free online activities, resources and downloads for educators and students:
- The 2018 NASA Pi Day Challenge – The fifth installment of NASA's illustrated math problem set features four new challenges that get students exploring space with pi.
- Teachable Moment: Pi Goes the Distance at NASA – Learn about the science behind this year's challenge, related resources for educators and how to make Pi Day a Teachable Moment.
- Pi in the Sky Lessons – Explore our online catalog of NASA Pi Day Challenge lessons for grades 4-12. Each lesson includes an illustrated poster or handout and answer key, plus a list of applicable Common Core Math and Next Generation Science Standards.
- NASA Pi Day Challenge – All 20 illustrated math challenges from the "Pi in the Sky" series can be found in one, handy slideshow for students.
- 18 Ways NASA Uses Pi – Whether it's sending spacecraft to other planets, driving rovers on Mars, finding out what planets are made of or how deep alien oceans are, pi takes us far at NASA. Find out how pi helps us explore space.
Explore More Pi
- How Many Decimals of Pi Do We Really Need? – While you may have memorized more than 70,000 digits of pi, world record holders, a JPL engineer explains why you really only need a tiny fraction of that for most calculations.
- Pi Day: What's Going 'Round – Tell us how you're celebrating Pi Day this year.