instructive(Conveying knowledge, information or instruction) adjective [UK: ɪn.ˈstrʌk.tɪv] [US: ˌɪn.ˈstrək.tɪv]Not all of the books are instructive. = No todos los libros son instructivos.
instructivonoun {m}
manual [manuals](handbook or booklet that instructs) noun [UK: ˈmæ.njʊəl] [US: ˈmæ.njuːəl]