This study aims to produce e-content (electronic content) which is developed based on one of the multimedia principles, namely the segmentation principle. E-content is be presented segment by segment. After several segments, an eassessment will be presented which is used to measure the students' level of understanding after studying the material in the segment. The course material presented in e-content is a course on the development of teaching materials in the Undiksha FIP Educational Technology Study Program. Specifically, the objectives of this study are: (1) to produce econtent based on the principle of segmentation which is considered valid from the aspects of content, aspects of media and learning design, (2) to produce interesting e-content based on student assessments. This is a development research, and the e-content is developed using the 4D model that consists of 4 stages, namely define, design, development, and disseminate. Furthermore, the e-content is evaluated using formative evaluation [1] which includes (1) expert validation, (2) individual trials, and (3) small group trials. The subjects involved in this study were 1 content expert, 1 media expert as well as instructional design, 3 students in individual trials, and 9-12 students in small group trials. The methods and instruments used to collect data in this study were questionnaires. The questionnaire was used to collect data from content experts, media and learning design experts, and students according to the evaluation stage. The data obtained through a questionnaire were then analyzed using descriptive statistics. The development results show that, e-content has been successfully developed using the 4D model. Based on expert judgment, e-content is declared valid from the aspects of content, media and learning design. Likewise, based on student assessment that e-content has met the attractiveness aspect.