instructional

adj

1. Intended for purposes of instruction, for teaching.

   “The manual might have been instructional had anybody actually taken the time to read it.”

2. Relating to the teaching profession.

   “There are 33 instructional resignations tonight, double the amount at this time last year.”

noun

1. A book, film, etc. intended to instruct.

   “On legitimate days off, during the summer, Klam received poolside instructionals in monied femininity from Marcia and her three sisters — “the Jewish Gang of Four.””