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Get ready to celebrate Pi Day! The annual celebration of the mathematical constant π, founded at the Exploratorium in 1988, happens this weekend. Senior Exploratorium Educator Ron Hipschman takes us through the fundamentals, foundation, and fun of π. As a longtime staff member, Ron worked closely with Pi Day founder Larry Shaw and is our in-house expert on all things π. Join us for this presentation, ask your questions, and participate in a simple activity to measure π with materials you have around the house.