man, from the back view and then turning to face the camera, standing in front of a chalkboard in what appears to be a classroom

man, from the back view and then turning to face the camera, standing in front of a chalkboard in what appears to be a classroom. The chalkboard has the heading "CHEMICAL EQUILIBRIUM" and notes written in white chalk. The man is wearing a light blue t-shirt with some writing and an emblem on the back, black pants, and black shoes. He is holding a slender wooden stick. He writes on the chalkboard, turns to look at the camera, and holds the stick casually. The background consists of a wall with a faded paint job and a tiled floor.