In the video, a person is seen placing marbles into a diagram on a piece of paper. The diagram consists of three circles arranged in a triangular pattern. The person places marbles of different colors into each of the three circles. The marbles are of various colors including yellow, green, and brown. The person carefully places each marble into the correct circle, ensuring that the colors are distributed evenly. The paper is placed on a table with a purple cloth underneath it. The person's hand is visible as they place the marbles into the diagram. The video does not contain any audio.