NASA Pi Day Challenge, Pi in the Sky 5 Promo


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: 

For Educators

  • 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 NASALearn 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.

For Students

  • 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