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A 4th Grader Explains March 14: Pi Day, the #DressforSTEM Campaign to Celebrate Women (and National Potato Chip Day!)

On this 15th official anniversary of Pi Day, more people are planning to wear purple for #DressforSTEM Day, celebrating women in the profession π

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Pi. π. Most of us remember from school that the symbol equates to 3.14, with a whole lot of other numbers following. That’s why so many geek out to memories of geography class on March 14 — and get a chuckle out of the latest Google Doodle

But do you remember what pi actually stands for? What the number represents? 

And have you ever heard of #DressforSTEM Day, which is also March 14? 

No? Here’s fourth-grader Ada with everything you need to know: 

Ada knows what Pi is, but how many adults do? The 74’s Jim Fields asked the people of Philadelphia — and the results are hilarious:

STEM Superstars: In honor of Pi Day, here are five inspiring teens creating STEM breakthroughs: 

And in celebration of Women’s History Month, The 74’s Trinity Alicia explores women’s ongoing impact in STEM and how a hashtag is driving the Pi Day conversation to representation of women in the field:

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