The 2018 NASA Pi Day Challenge Is Here! Pi Day, the annual celebration of one of mathematics' most popular numbers, is back! Representing the ratio of a circle's circumference to its diameter, pi has many practical applications, including the development and operation of space missions at NASA's Jet Propulsion Laboratory. The March 14 holiday is celebrated around the world by students, teachers, math enthusiasts and casual fans alike – from memorizing digits of pi (the current Pi World Ranking record is 70,030 digits) to baking and eating pies. JPL is celebrating with another installment of its NASA Pi Day Challenge, a set of four illustrated math problems that involve pi and real problems scientists and engineers solve to explore space! Answers will be released March 15. Find out more about the science behind this year's challenge, related resources for educators (including free downloads!) and how to make Pi Day a Teachable Moment:   Check it out!   Explore these Pi Day resources from NASA/JPL Edu NASA Pi Day Challenge Lesson Collection (Grades 4-12) – Explore the entire "Pi in the Sky" lesson collection for educators, including free poster and handout downloads!   NASA Pi Day Challenge Slideshow for Students (Grades 4-12) – How many of the 20 Pi Day Challenge puzzlers can students solve on their own? Pi Day: What's Going 'Round – Tell us what you're up to this Pi Day and share your stories and photos with NASA. And join the conversation with @NASAJPL_Edu on Twitter using the hashtag #NASAPiDayChallenge Blog: How Many Decimals of Pi Do We Really Need? - The director and chief engineer for NASA's Dawn mission explains.

 

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