One by one, students' portraits began popping up on Teresa Culver's laptop screen. Culver, an associate professor in the Department of Engineering Systems and Environment in the University of Virginia School of Engineering, was hosting a virtual lab over a Zoom conference; about a half dozen students watched from their homes all over the country. This was a new and very different experience compared to her normal lab class, filled with hum of eager and engaged students in the basement of UVA Engineering's Thornton Hall D wing. Culver, who's been on the faculty since 1993, teaches Introduction to Environmental Engineering; this was just one team of students from the class's required lab, which this April day was focused on sanitation and wastewater treatment. “Good morning class,†she said after welcoming each student by name. She then excused herself, leaving students peering at a table in her home filled with coffee filters, cheese cloth, assorted plastic cups, spoons, funnels, bleach, sand and other items. After a moment, she returned holding a clear, plastic cup of chunky, dark water. “Floaters and sinkers,†she called the brew, and held it close to the computer's video camera for the students to see. “So, how shall we proceed?†she asked.