In this photo taken Friday, Aug. 18, 2017, fourth graders at Clardy Elementary School in Kansas City, Mo. practice the proper use of their eclipse glasses in anticipation of Monday's solar eclipse. Schools around the country preparing for the solar eclipse are reacting in a variety ways, with some using the event for a full day of science lessons and others closing to avoid the crush of crowds expected in their towns. (AP Photo/Charlie Riedel)
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