Students at a lecture watch a big screen in a university atrium, shot on R3D

indoors day large group of people men women one person woman caucasian 30s teacher adults diversity young adults 20s millennials teenagers multi-ethnic group students disabled student colleagues youth teaching presenting learning listening looking at screen technology av display big screen sitting raising arms hands in the air asking question lecture lesson communication meeting presentation education higher education university college atrium lobby waist up back view furniture lockdown