Pacific Science Center math van at Ridgeview Elementary

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Photo - <p>Sydney Peterson, 9, left and Lauren Simpson, 8, revel in finishing a geodesic dome puzzle Monday March 18, 2013 at Ridgeview Elementary School in Kennewick. The Science on Wheels Math Finder Van from the Pacific Science Center visited the school with some hands-on math related games for the students to enjoy. (AP Photo/Tri-City Herald)</p>

Sydney Peterson, 9, left and Lauren Simpson, 8, revel in finishing a geodesic dome puzzle Monday March 18, 2013 at Ridgeview Elementary School in Kennewick. The Science on Wheels Math Finder Van from the Pacific Science Center visited the school with some hands-on math related games for the students to enjoy. (AP Photo/Tri-City Herald)

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Sydney Peterson, 9, left and Lauren Simpson, 8, revel in finishing a geodesic dome puzzle Monday March 18, 2013 at Ridgeview Elementary School in Kennewick. The Science on Wheels Math Finder Van from the Pacific Science Center visited the school with some hands-on math related games for the students to enjoy. (AP Photo/Tri-City Herald)

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