plural of instructional

(uncountable) The act of instructing, teaching, or furnishing with information or knowledge. / (countable) An instance of the information or knowledge so furnished. / (countable) An order or command.

plural of instruction

Intended for purposes of instruction, for teaching.

A book, film, etc. intended to instruct.

plural of instructive

Capable of being instructed; teachable.

Third-person singular simple present indicative form of instruct

(informal) shortened form of instructions

(transitive) To teach by giving instructions. / (transitive) To tell (someone) what they must or should do.