Efektivitas Media PowerPoint Analisis Visual terhadap Evaluasi Hasil Las SMAW di SMKN 7 Semarang

Alfian Hidayat; Wirawan Sumbodo

doi:10.36312/panthera.v6i4.1589

Authors

Alfian Hidayat Program Studi Pendidikan Teknik Mesin, Fakultas Teknik, Universitas Negeri Semarang, Jalan Raya Banaran, Semarang, Jawa Tengah 50229, Indonesia
Wirawan Sumbodo Program Studi Pendidikan Teknik Mesin, Fakultas Teknik, Universitas Negeri Semarang, Jalan Raya Banaran, Semarang, Jawa Tengah 50229, Indonesia

DOI:

https://doi.org/10.36312/panthera.v6i4.1589

Keywords:

Weld Evaluation, Learning Media, Vocational Education, Visual Analysis-based PowerPoint, SMAW

Abstract

This study aims to analyze the effect of implementing visual analysis-based PowerPoint media on the ability of SMKN 7 Semarang students to evaluate Shielded Metal Arc Welding (SMAW) results. The study was motivated by students' persistently low ability to systematically identify and evaluate weld quality, as well as the limited use of learning media specifically designed to foster higher-order thinking skills at the evaluation level (C5). A quasi-experimental method with a non-equivalent control group design was employed, involving 71 Grade XI students from the Metal Fabrication and Manufacturing (TFLM) program—comprising 36 students in the control group and 35 in the experimental group. Research instruments consisted of pre-tests and post-tests assessing SMAW weld evaluation skills. Data were analyzed using descriptive statistics, the Kolmogorov-Smirnov normality test, N-Gain analysis, and the Mann-Whitney U test. The results showed that the average post-test score for the experimental group was 97.71, while the control group scored 89.75. Additionally, the average N-Gain scores were 0.4361 for the experimental group and 0.3112 for the control group; both fell within the "medium" category. The Mann-Whitney U test yielded an Asymp. Sig. (2-tailed) value of 0.125. At a 5% significance level (α = 0.05), the obtained significance value exceeded α (0.125 > 0.05); consequently, the null hypothesis (H0) was accepted and the alternative hypothesis (H1) was rejected. Thus, the implementation of visual analysis-based PowerPoint media did not demonstrate a statistically significant effect on improving SMAW weld evaluation skills. Nevertheless, the developed media showed a tendency to enhance SMAW weld evaluation capabilities and holds potential as an alternative learning medium in vocational education.

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