The purpose of this study is to suggest the instructional design for learning the rules of Korean orthography efficiently and effectively. For this purpose, I apply Algo-Heuristic Theory that appropriates for teaching the thinking process of understanding the complex knowledge. As a result, The course for which the rules of Korean orthography applies was represented. It is to select valid write type. and Instructional-Design method this representation applies was suggested. To verify applicability and effectualness about this method, I applied this method in class on the rules of Korean orthography for university students. Consequently, this instructional-design is make student select a valid write type of the word that is concerned the rules of Korean orthography that is not presented during the class. This shows that “Instructional-Design of principles of the rules of Korean orthography Based on Algo-Heuristic Theory” can be an effective teaching method in it is impossible situation to teach all of the rules of Korean orthography directly.