Opetuksen suunnittelu (Instructional Design) voidaan määritellä systemaattiseksi prosessiksi, jossa yleiset ja erityiset oppimisen ja opetuksen periaatteet käännetään opetusmateriaaleja ja oppimista koskeviksi suunnitelmiksi.
Opetuksen suunnittelu prosessina
"Instructional Design is the systematic development of instructional specifications using learning and instructional theory to ensure the quality of instruction. It is the entire process of analysis of learning needs and goals and the development of a delivery system to meet those needs. It includes development of instructional materials and activities; and tryout and evaluation of all instruction and learner activities."
Opetuksen suunnittelu tieteenalana
"Instructional Design is that branch of knowledge concerned with research and theory about instructional strategies and the process for developing and implementing those strategies."
Opetuksen suunnittelu tieteenä
"Instructional Design is the science of creating detailed specifications for the development, implementation, evaluation, and maintenance of situations that facilitate the learning of both large and small units of subject matter at all levels of complexity."
Opetuksen suunnittelu realiteettina
"Instructional Design can start at any point in the design process. Often a glimmer of an idea is developed to give the core of an instruction situation. By the time the entire process is done the designer looks back and she or he checks to see that all parts of the "science" have been taken into account. Then the entire process is written up as if it occurred in a systematic fashion."