This image depicts a classroom in the city of Almada, Portugal

This image depicts a classroom in the city of Almada, Portugal. A male lecturer, viewed from the back, with short grey hair and wearing a plaid shirt and light-colored trousers, writes mathematical equations and Portuguese text on a green chalkboard at the front of the room. To the right of the chalkboard, a white projector screen displays a digital document containing mathematical formulas and text. A silver laptop rests on a small table beneath the screen. Multiple students are seated at individual desks with light-colored tops and dark metal frames, paired with light brown wooden chairs featuring dark metal frames. In the immediate foreground, a male student, viewed from behind, wears a light tan jacket and light trousers; a dark backpack hangs from his chair, and two books, one red and one yellow, are on his desk. To his left, another male student, also viewed from behind, wears a dark blue hooded sweatshirt, with a dark bag resting on his desk. Additional students are partially visible further back in the room. The classroom features white walls, a suspended ceiling with square panels and recessed fluorescent light fixtures, and a light brown textured floor. The environment indicates an active educational setting.