In a Massachusetts school district, researchers found that plexiglass dividers with side walls in the main office were impeding air flow. Here are the factors in play.Ī study published in June and led by researchers from Johns Hopkins, for example, showed that desk screens in classrooms were associated with an increased risk of coronavirus infection. Teacher Shortage: While the pandemic has created an urgent search for teachers in some areas, not every district is suffering from shortages.students in most states have experienced troubling setbacks in math and reading since the pandemic began, according to the National Assessment of Educational Progress. But some educators are finding ways to integrate it into lessons. Teaching Climate Change: Many middle school science standards don’t explicitly mention climate change.But one issue remains divisive: teaching children about gender diversity and L.G.B.T.Q. Curriculum Wars: According to a new survey, most Americans are satisfied with their local schools.But erecting plastic barriers can change air flow in a room, disrupt normal ventilation and create “dead zones,” where viral aerosol particles can build up and become highly concentrated. Under normal conditions in stores, classrooms and offices, exhaled breath particles disperse, carried by air currents and, depending on the ventilation system, are replaced by fresh air roughly every 15 to 30 minutes. Rows of clear plastic shields, like those you might find in a nail salon or classroom, can also impede normal air flow and ventilation. Research suggests that in some instances, a barrier protecting a clerk behind a checkout counter may redirect the germs to another worker or customer. And sometimes the barriers can make things worse. But scientists who study aerosols, air flow and ventilation say that much of the time, the barriers don’t help and probably give people a false sense of security. Intuition tells us a plastic shield would be protective against germs. Covid precautions have turned many parts of our world into a giant salad bar, with plastic barriers separating sales clerks from shoppers, dividing customers at nail salons and shielding students from their classmates.
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