AI Photo
A close-up of a middle-aged male teacher with a warm and introspective expression, wearing a pair of wire-rimmed glasses, a professorial suit with a light-blue dress shirt, and standing in front of a chalkboard filled with intricate mathematical equations and diagrams, with a few notes scribbled on a blackboard on the wall behind him, a hint of sunlight filtering through the window casting a warm glow on his face, in a classic academic background.