adj: instructive or intended to teach or demonstrate
Instruction presented from an authority.
Intended for instruction; inclined to teach or lecture others too much. A consultant can ensure that the first definition is achieved, rather than the second.
Explicitly instructive. A didactic poem or novel may be good or bad. Pope's "Essay on Man" is didactic; so are the novels of Ayn Rand.
instructive (especially excessively)
Learning method for instruction, that consists mainly of presentation and traditional teaching methods.
teaching a lesson or having a “moral"
Designed to give instruction.
The branch of education dealing with teaching.