THE EFFECTIVENESS OF LEARNING MEDIA BASED ON YOUTUBE VIDEO TUTORIALS ON STUDENT LEARNING OUTCOMES PER WELDING PRACTICE

Abstract

This study aims to analyze the effectiveness of YouTube-based video tutorial learning media in improving students' 
cognitive learning outcomes in Shielded Metal Arc Welding SMAW practice at SMK Negeri 4 Semarang. The 
background of this research is based on the limited use of contextual and engaging instructional media in 
vocational education, which leads to low conceptual understanding and applied skills among students. The 
research employed a quasi-experimental method with a pretest-posttest control group design. The sample 
consisted of 60 tenth-grade students from the Mechanical Engineering Expertise Program, selected through 
purposive sampling and divided into two groups: an experimental group that used YouTube-based instructional 
videos and a control group that applied conventional lecture methods. The research instrument comprised 20 
validated multiple-choice questions. Data was analyzed using the Shapiro-Wilk normality test, Levene's 
homogeneity test, independent t-test, and N-Gain analysis to assess learning improvement. The results indicated a 
significant difference between the experimental and control groups p< 0.001, with the experimental group 
achieving an average post-test score of 84.50 and an N-Gain of 0.6100 high category. In contrast, the control group 
scored an average of 75.33 with an N-Gain of 0.4155 medium category. These findings suggest that using YouTube 
video tutorials as instructional media effectively enhances students' learning outcomes in welding practice while 
also creating a more contextual, visual, and student-centred learning process suited to the learning styles of 
vocational students.