Mathnasium helps kids learn and love math.
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They joined us to talk about Pi Day and why it's important.
"It is a ratio that allows us to measure all different parts of a circle," said Jana Frank, owner. "Since circles are everywhere in our world, literally helps the world go round, this helps us understand all different parts of the universe."
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To celebrate, grab your favorite pie or pizza. Just make sure it's shaped like a circle!
Plenty of pizza places and bakeries are offering deals this Pi Day. Here are a few:
Seven Eleven is offering any whole pizza for $3.14, but you have to be part of the Seven Rewards Loyalty program.
Cici's says adults can dine in at the buffet for $3.14 today.
Boston Market is offering a free chicken pot pie with the purchase of a pot pie and drink.
Prime members can get $3.14 off cherry and apple pies at Whole Foods.