The purpose of this study was to produce valid, practical, and effective teaching materials through the digitization of Toba Batak ethnic ornaments. The research method used includes research and development with the 4-D model (Four D Models). The steps of using this model are to define, design, develop, and disseminate. The results of research on teaching materials are known: a) validity of 78% and valid enough category, b) Practicality of 77% and practical enough category, and c) effectiveness of 83.26% with an effective category. Teaching material can be utilized by lecturers and students as the primary guideline and handbook in the North Sumatra Ethnic Decorative Variety Course.