“Hello, in this video, I suggest you review the whole course on the Pythagorean theorem …” In front of a white board, Yvan Monka appears, half-smile, black-rimmed glasses. Then the math class begins, clear and precise. And the students plebiscite this seriousness. Since confinement, in fact, the YouTube channel “M @ ths-et-tiques” has been followed […]
