Kriswanto
Universitas Negeri Semarang, Kota Semarang, Indonesia

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The The Influence of K3 Understanding on K3 Implementation in Motorcycle Engineering Expertise Competencies : The Influence of K3 Understanding on K3 Implementation in Motorcycle Engineering Expertise Competencies Irfan Kurniawan; Shohihatur Rohman; Kriswanto
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.113632

Abstract

This study aims to analyze the effect of Occupational Safety and Health understanding on the implementation of safety practices among students during workshop activities in the Motorcycle Engineering competency at SMK Muhammadiyah 2 Semarang, which is motivated by the low level of student safety behavior. The study employed a quantitative descriptive approach with a sample of 26 students. Data were collected through observation, interviews, and a 20-item Likert-scale questionnaire, and analyzed using validity, reliability, normality tests, and simple linear regression with SPSS. The results indicate that the instrument is valid and reliable with a Cronbach’s Alpha value above 0.80, and the data are normally distributed. Regression analysis shows that Occupational Safety and Health understanding has a significant effect on its implementation, with a significance value of less than 0.01 and a coefficient of determination of 0.601, indicating that 60.1 percent of safety practice implementation is influenced by students’ understanding, while the remaining is affected by other factors. These findings confirm that higher levels of safety understanding lead to better safety behavior during practical activities. This study highlights the importance of strengthening practice-based safety learning, developing consistent safe work habits, and enforcing supervision to improve safety implementation in vocational schools.the abstract in English here. If articles in English, abstract in Indonesia language do not need to be included. Writing abbreviations and mathematical formulas in the abstract needs to be avoided. The abstract consists of summary of the research objectives, approaches or methods used, important results and conclusions.
Penggunaan Penggunaan Media Pembelajaran Berbasis PowerPoint untuk Meningkatkan Hasil Belajar Pengelasan SMAW: Utilization of PowerPoint-Based Learning Media to Improve SMAW Learning Outcomes Ahmad Luqmanul Hakim; Lelu Dina Apristia; Kriswanto
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 15 No. 1 (2027)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v15i1.121489

Abstract

This study analyzed changes in learning outcomes in Shielded Metal Arc Welding (SMAW) after students received instruction using Microsoft PowerPoint 2010-based learning media. A quantitative One-Group Pretest-Posttest design was employed involving 20 eleventh-grade students in the Welding Engineering program at SMK Walisongo, Semarang. Knowledge mastery was measured using 25 multiple-choice items with a maximum score of 25. The data were analyzed using descriptive statistics, the Shapiro-Wilk test, Paired Sample t-test, Cohen's dz, and N-Gain. The mean learning outcome increased from 16.95 (SD = 4.96) on the pre-test to 22.50 (SD = 2.46) on the post-test. The Paired Sample t-test yielded t(19) = 5.095 with p < 0.001. Since the significance value was lower than 0.05, H0 was rejected and Ha was accepted, indicating a significant difference between the mean pre-test and post-test scores. The mean difference was 5.55 points with a Cohen's dz of 1.14 which is in the large category, while the N-Gain of 0.689 was classified as moderate. These findings indicate that