NASA @NASA
Teachers: Celebrate #PiDay in your classroom! Challenge your students to use pi to solve some of the same problems our scientists and engineers face while exploring other worlds. Answer key is available on March 15. Slice into our #NASAPiDayChallenge: https://t.co/07d3us4Whh https://t.co/RUaLVUrjM5 — PolitiTweet.org