In the video, a man is standing in front of a chalkboard. He is wearing a gray sweater and blue pants. He is holding a piece of chalk in his hand and appears to be writing on the board. The chalkboard has various mathematical equations and diagrams written on it. The man seems to be explaining something, possibly related to the content on the board. The room appears to be a classroom, with wooden desks and chairs visible in the background. The lighting is bright, and the man is the main focus of the video.