President Barack Obama looks over the shoulder of Hannah Wyman, 11, as she demonstrates her project in the Blue Room, Feb. 7, 2012, during the second annual White House Science Fair celebrating student winners of science, technology, engineering, and math (STEM) competitions from across the country. Wyman, who attends St. Anna's School in Leominster, Mass., won the grand prize in her age group (9-12) for her video game "Toxic," in Microsoft's first-ever Kodu Cup.

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