IRVING, Texas — Crowded around a workshop table, four girls at de Zavala Middle School puzzled over a Lego machine they had built. As they flashed a purple card in front of a light sensor, nothing happened.  The teacher at the Dallas-area school had emphasized that in the building process, there are no such thing […] The post A gender gap in STEM widened during the pandemic. Schools are trying to make up lost ground appeared first on The Hechinger Report.