young adult male students talking in modern university class

1080 1080p 1920 1920x1080 2160 3840 3840x2160 american book camera casual caucasian class classroom college communicate consult desk discussion education encouraging exam explain eye glasses group happy helping indoors knowlage lecture lecturer lesson listen look male man people person positive professor school sitting smile smiling student studying subject talk talking teacher teen teenage teenager theme together touchscreen tutor uhd university video working