DALLAS TWP. — That not-so-old acronym for Science, Technology, Engineering and Math — STEM — has proven it doesn’t have to mean high-tech work or advanced physics. As students at the Dallas elementary schools proved, it can be anything from a paper airplane to a roundish robot. All four district schools participated in National STEM Week beginning Monday and running through Friday with a broad sample of how STEM seeps into almost anything you want to do. The high school began on Monday with information for students about STEM careers, including a presentation about flying drones or in the world(s) of virtual reality. Dallas Middle School students are getting a chance to use new Industrial Arts equipment, including a laser engraving machine. Both the Intermediate School and Wycallis Elementary — which, combined, house kindergarten through fifth grade — set up activities in their gymnasiums for students to take turns trying. At the new Intermediate School, which welcomed students for the first time this fall, smiles and surprise were abundant as student discovered how to launch cotton balls, fold efficient paper airplanes and use simplified coding to make little robots roll the wa...