College student alone in classroom raises hand 4k
SLOW MOTION: Woman raising hands in front of the waterfall
Female teacher with a tablet-pc held in her hands standing in front of the blackboard in classroom
MS DS PAN Teacher next to blackboard interacting with students in class
MS TU Pregnant woman raising her arms in yoga pose
MS Portrait of young woman sitting in front of blackboard in classroom
MS Young female teacher writing mathematical formula on blackboard, students raising hands
Male student raising hand and asking teacher a question sitting on table
Young male student raising hand by others in a row at the classroom
Male student is raising hand and asking question then listening to the answer, young people sitting around him are looking at teacher and taking notes.
Friendly teacher is talking to students asking questions while young people are raising hands and answering sitting at desks. High school, education and youth concept.
Smart guy student is raising hand and talking to professor while fellow students are listening to them and smiling. Pupil and teacher relations concept.