opetuksellisin
Opetuksellisin is a Finnish adjective in its superlative form, describing something that is the most didactic or educational among a group of items. It is the superlative of opetuksellinen, a word derived from opetus (teaching) and a suffix that conveys instructional or didactic meaning. The term is primarily used in pedagogical, linguistic, or media-criticism contexts rather than in everyday conversation.
In usage, opetuksellisin characterizes materials, presentations, or curricula that place the strongest emphasis on teaching goals
Examples include descriptions of textbooks, lectures, or online courses, for instance: "Tämä oppikirja on opetuksellisin kurssin