Fourth-grade student Sergio Preciado of Richland demonstrates how the Lego robot he helped write code for works on the “Submerged” themed task board. Bob Brawdy bbrawdy@tricityherald.com Richland, WA ...

Team Exothermic works on a robot at Greenfield-Central High School this winter. Team Exothermic works on a robot at Greenfield-Central High School this winter. GREENFIELD — Team Exothermic loves a ...