Makale Christian Vocational School faces learning difficulties due to the ineffective use of textbooks, making it difficult for students to understand the material. Therefore, it is necessary to develop e-books as a learning medium to increase students' understanding in the Basic Computer and Network subjects for class X TKJ. This research aims to: (1) analyze the need for developing e-books as teaching materials, (2) design an e-book development design, and (3) describe the level of validation and practicality of the e-book. The method used is Research and Development with the ADDIE model, including analysis of student characteristics, school environment and curriculum. The design stage includes creating a storyboard and compiling content, while the development stage includes media validation and practicality testing. This research was conducted at Makale Christian Vocational School with the subject of class X students and involved validators, students and teachers. The research results show that this e-book is very feasible, with a media validator assessment of 80%, material validator assessment of 90%, teacher assessment of 86%, and student assessment of 94%.
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