Core Conundrum: A 'Pi in the Sky' Math Challenge

Teachable Moments: Pi Goes to Infinity and Beyond in NASA Challenge

Learn more about about pi, the history of Pi Day before, and the science behind the 2022 NASA Pi Day Challenge.

Pi Day Challenge Lessons

Here's everything you need to bring the NASA Pi Day Challenge into the classroom.

Slideshow: NASA Pi Day Challenge

The entire NASA Pi Day Challenge collection can be found in one, handy slideshow for students.

Pi Day: What's Going 'Round

Tell us what you're up to this Pi Day and share your stories and photos with NASA.

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.

Slideshow: 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.

Planetary Egg Wobble and Newton's First Law

Students try to determine the interior makeup of an egg (hard-boiled or raw) based on their understanding of center of mass and Newton’s first law of motion.

Mars in a Minute: Are There Quakes on Mars?

Are there earthquakes on Mars – or rather, "marsquakes"? What could they teach us about the Red Planet?

Downloads

Can't get enough pi? Download this year's NASA Pi Day Challenge graphics, including mobile phone and desktop backgrounds:

Infographic: Planet Pi

This poster shows some of the ways NASA scientists and engineers use the mathematical constant pi (3.14) and includes common pi formulas.

18 Maneras en Que la NASA Usa Pi

Pi nos lleva lejos en la NASA. Estas son solo algunas de las formas en que pi nos ayuda a explorar el espacio.