Students at a school in Massachusetts recently celebrated Pi Day with real pie, served at 1:59 p.m. to mark the next three numbers in the 3.14 pi numeric expression. Teachers at the school also have used brownies and music to illustrate math concepts. "I'm always trying to hook the kids into the material, with something that will always remind them (of a math principle)," teacher Stephanie Purington said. "If there's a song or a brownie behind it, it makes (the principle) a little stickier."

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