adjective

intended to teach, particularly in having moral instruction as an ulterior motive.

a didactic novel that set out to expose social injustice

instructive,instructional,educational,educative,informative,informational,doctrinal,preceptive,teaching,pedagogic,academic,scholastic,tuitional,edifying,improving,enlightening,illuminating,heuristic,pedantic,moralistic,homiletic,propaedeutic