This study aims to develop effective and engaging basic English grammar learning materials using the YouTube social media platform for eleventh-grade students at SMK Negeri 2 Rantau Utara. The research employed the ADDIE development model, which includes five phases: Analyze, Design, Develop, Implement, and Evaluate. Data collection techniques included expert validation, student questionnaires, and pre-test and post-test assessments. A total of 20 students participated in the trial implementation. The results of media validation showed a feasibility score of 86%, while content validation reached 93%, indicating that both the media and materials are valid for instructional use. Student feedback revealed high practicality, and learning outcome analysis showed significant improvement, with average post-test scores increasing from 75 to 93.2. These findings suggest that integrating YouTube as a learning platform can enhance students’ understanding of basic English grammar and contribute to a more interactive and student-centered learning environment.
                        
                        
                        
                        
                            
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