![]() Data analysis of the validation sheet and questionnaire used the Likert scale and the Guttman scale, while the data analysis of the learning outcomes test used the Normalized Gain Score (n-Gain). The research instrument and data collection in this study used validation sheets, response questionnaires, and learning outcomes tests. This research was conducted at the Mathematics Education Study Program, the University of PGRI Madiun with 20 students as the subject of the fourth semester. This development research uses a 4-D model containing 4 stages, namely Define, Design, Develop, and Disseminate. ![]() ![]() The purpose of this research is to produce MATLAB Mobile-based textbooks that are suitable to support online learning. Learning mathematics online, especially in Linear Algebra courses requires mathematical software-based teaching materials, to strengthen the understanding of numerical concepts. ![]()
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