![]() The results of the overall practicality assessment from the practicality test were assessed at 86.77%, so that the level of practicality can be interpreted as very practical to use. ![]() Based on the analysis, it was obtained that the validator test for this mobile application-based learning media was 90.33%, with a very valid interpretation of the validity level of use. The instrument used in this study was in the form of a questionnaire distributed to teachers and students as well as experts to test the validator. This type of research is research and development using a 4-D development model. ![]() This research and development aims to produce a product in the form of mobile application-based learning media for class X Vocational High School students.
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