| Pi Day, the informal holiday beloved by math enthusiasts – and even by the math averse – is almost here! March 14 marks the yearly celebration of the mathematical constant π (pi). More than just a number for mathematicians, pi has all sorts of applications in the real world, including on missions developed by NASA's Jet Propulsion Laboratory, and it's a great time to have fun and celebrate the M in STEM. For the third year, JPL has created a Pi Day problem set, which gives students a chance to put their pi skills to the test to solve some of the same problems NASA scientists and engineers do. The set of four illustrated math problems are compiled into a graphic (as well as classroom handouts) designed for students in grade 4 through high school – but fun for all! On March 16, the answers to all four problems and the steps needed to find those answers will be released in a companion infographic on the Pi Day challenge activity page. To see a compilation of all 12 Pi Day challenge questions optimized for mobile devices and screen readers, visit: http://www.jpl.nasa.gov/edu/nasapidaychallenge Head on over to the Teachable Moments blog to read more about pi and Pi Day at NASA and learn how you can share your Pi Day ideas with us!  | 
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