New interactive learning techniques are rapidly becoming the norm in the effort to boost student performance. But many of the behaviors that are required for group interactive learning can unknowingly spread dangerous pathogens to students, faculty, and their families. This is a relatively new issue in education since the traditional model of using a projector as the primary display limited the physical touching of common objects in the classroom.
As early as the 1950s, slide projectors entered use in classrooms to help teachers make their classes more dynamic. Increasingly, teachers have been relying on audio-visual tools to increase in-class interaction, retain the attention of students, and improve syllabus message delivery.