The video shows a man in a black sweater and brown pants standing in front of a chalkboard. He is holding a piece of chalk and appears to be writing on the board. The man is standing in a classroom with students sitting at desks in front of him. The chalkboard is green and has some writing on it. The man is focused on his task and seems to be explaining something to the students. The students are attentive and listening to the man. The room is well-lit and the walls are white.