In the video, a person is seen writing on a chalkboard. The person is using a piece of chalk to write on the board. The chalkboard is black and has some writing on it already. The person's hand is visible as they write, and they appear to be right-handed. The writing is not clear enough to read, but it seems to be some sort of mathematical equation or formula. The person's movements are steady and deliberate as they write on the board.