The 2023 NASA Pi Day Challenge goes live on March 9
K-12 students and educators, parents, museums, science centers and planetariums
Discover exciting ways to celebrate Pi Day with NASA, including free online resources and downloads for teachers, parents and institutions, plus the Pi Day Challenge, which gets students using pi like scientists and engineers!
NASA is joining schools, students and science centers across the U.S. to 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.
Pi Day gives us a reason to celebrate the mathematical wonder that helps NASA explore the universe. And we’re giving students a chance to join in the fun by using pi to explore Earth and space themselves in our 10th annual NASA Pi Day Challenge – available on March 9, 2023. In the meantime, explore our collection of evergreen Pi Day Challenge problems, articles about how we use pi at NASA, and free downloads, including mobile phone and desktop backgrounds.