MCLEAN, Va.--(BUSINESS WIRE)-- #ExploraVision--Today, the national winners of the 33rd annual ExploraVision program, the world’s largest K-12 science competition, gathered in Washington, DC to be formally recognized for their winning projects. ExploraVision is sponsored by Toshiba and administered by the National Science Teaching Association (NSTA). This competition is designed to help students develop skills emphasized in the Next Generation Science Standards, including problem-solving, critical-thinking and c