<![CDATA[This research aims to develop HARSOS interactive learning multimedia based on Articulate Storyline on Social Harmony material in the Sociology class XI SMA class and test its validity, practicality and effectiveness. Development uses a 4D model (Define, Design, Develop, Disseminate). Data was collected through validation sheets by one material expert and two media experts, practicality questionnaires by 20 students, and effectiveness questionnaires by two teachers and 40 students from three schools. Data were analyzed descriptively using a five-point Likert scale. The validation results show that HARSOS multimedia obtained an average score of 95% from material experts and media experts with a very valid category. The practicality test obtained an average of 92% of students in the very practical category. The effectiveness test shows an average score in the range of 84%–100% from teachers and 92%–93% from students, which is in the very effective category. Overall, the assessment results show that HARSOS multimedia meets the criteria of being valid, practical and effective based on the assessments of validators, teachers and students. HARSOS multimedia can be used as an alternative interactive learning media in the Social Harmony material in the class XI SMA Sociology subject]]>
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