资料来源 : pyDict

教育性的,指导性的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Instructional \In*struc"tion*al\, a.
   Pertaining to, or promoting, instruction; educational.

资料来源 : WordNet®

instructional
     adj : of or relating to or used in instruction; "instructional
           aids"