In the video, a man is standing in front of a chalkboard. He is wearing a blue shirt and has short hair. The chalkboard has some writing on it, and the man is holding a piece of chalk in his hand. He starts by talking to the camera, then turns to the chalkboard and begins to write. He writes a circle on the board and then proceeds to write inside the circle. The man seems to be explaining something, possibly related to the circle he has drawn. The video is shot in a classroom setting, and the man appears to be a teacher or instructor.