Hi Anon, I'm not a native speaker, but I think I know what you're talking about. I can't tell you if there's name for such class exercise or not in the Western world, but maybe if you provide more information about it, someone will suggest a phrase/term that comes close to what you're looking for? Are you talking about a speech exercise students do, more so in elementary school, where you are asked to look at a short series of pictures (more like comic strips) and tell a succinct story?
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.