This paper aims to propose a possibility of Didactical Transposition for grammatical knowledge focusing on the Parts of speech. Grammatical knowledge are categorized to the three types. There are an grammatical knowledges as a teacher knowing and grammatical knowledge for a teacher to teach, grammatical knowledge transferred to student etc. Each grammar knowledge is converted. There have been Transpositions in grammatical knowledge. There are an constituent Transpositions, systematic Transpositions and Didactical Transposition etc. A Didactical Transposition of teacher on the parts of speech education shall be made much. Because, parts of speech is treated to concept basic in Korean education as a Foreign language. Two methods were proposed for Didactical Transposition for grammatical knowledge focusing on the Parts of speech in this paper. The one is schematizing parts of speech and another is schematizing research act. (Kumoh National Institute of Technology)