Annual Washington Post Bucket Event 2010

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Preschool children gather around a volcano to watch it erupt during... News PhotoChild,Erupting,Horizontal,Human Interest,Maryland - State,Outdoors,Potomac - Maryland,Preschool,Scientific Experiment,USA,VolcanoPhotographer Collection: The Washington Post 2013 The Washington PostPOTOMAC, MD - FEBRUARY 13: Preschool children gather around a volcano to watch it erupt during an experiment. At the St. Andrews Episcopal School in Potomac, MD, they use brain research to inform teaching and learning. The school has the only K-12 school center for teaching based on brain research in the country. (Photo by Sarah L. Voisin/The Washington Post via Getty Images)