didactive

The genre has never been predictive, and it stopped being didactive about five minutes after people realised Hugo Gernsback original agenda was rubbish.

Optimism – A Bad Fit For SF? « It Doesn't Have To Be Right… 2008

Master, and be able to instill this by gentle and non-didactive method into his bairns, so that they may steer by the North Star and not by shiftier, flashier stars.

Letters of Franklin K. Lane Franklin Knight Lane 1892

The didactive import of the above delineation directs the eyes of the soul at once to the center of the universe, the sensorium of the Godhead, the home of the angels; a city with blazing walls, and towering spires, shining domes and pearly gates, and whose streets are paved with gold, upon which the feet of the redeemed walk, and where cherubic legions dance upon a sea of glass all mingled with fire, and phalanx of seraphim bask in the golden sunlight of the city of God.

From log cabin to the pulpit, or, fifteen years in slavery, b. 1848 1913

However, I doubt that a more truthfully didactive article is what you or your publication is seeking, "Goodman wrote.

Tucson Weekly 2009