Three college or high school students all start using their cell phones at the same time in a classroom
Teacher and three high school or college university students all using their mobile smart phones in a classroom - slow motion
Professor and three high school or college university students all take out and start using their mobile phones in a classroom to look up something on the internet
Students and teacher gather around phone in science or math classroom (slow motion)
High School Students And Teacher In Classroom
College student presenting robotic toy to science teacher at school
Teacher and student working on computers in school classroom
Teacher and student work on computer in school classroom
Teacher and student in school classroom working on computer
Teacher and students working on computers in school classroom
Teacher and student working on computers in school classroom
College or high school student sharing something on her phone with teacher and classmates in slow motion