This study was conducted to address the gap between the professional competence of vocational high school teachers and the competency standards established by the Regulation of the Minister of National Education Number 16 of 2007 and the Decree of the Directorate General of Teachers and Education Personnel Number 2626/B/HK.04.01/2023 regarding the Teacher Competency Model. Limited access to conventional education and training also contributes to this issue. The objective of this research is to develop a mobile learning-based training system using multi-platform integration that is engaging, effective, and adaptive in order to enhance the professional competence of vocational high school teachers.The development process applied the ADDIE model through five comprehensive stages. In the analysis stage, a needs assessment survey identified an urgent need for technology-based training. During the design stage, various components of the mobile learning system were structured. The development stage involved expert validation, and the system was rated as “Highly Feasible” by media experts. In the implementation stage, the system was delivered online and involved 230 vocational high school teachers. The evaluation stage showed an increase in the average score from 15.62 in the pre-test to 18.84 in the post-test, with an N-Gain score of 0.74, categorized as high. Additionally, participants rated the system as “Very Engaging”, with an attractiveness score of 3.6 out of 4, equivalent to 90%.The findings indicate that the mobile learning-based education and training system developed in this study is effective in improving the professional competence of vocational high school teachers.

Occupational Safety and Health (OSH) is a crucial aspect of land surveying practices conducted by vocational high school students. The risk of accidents, such as falls, being buried by soil, and exposure to extreme weather conditions, necessitates the optimal implementation of OSH awareness and compliance. This study aims to analyze the integration of student awareness and compliance with OSH in land surveying practices. The research employs a quantitative approach using multiple linear regression analysis. Prior to analysis, the data were tested for (1) normality, (2) homogeneity, and (3) linearity. The study population consists of 105 students from the Construction and Housing Engineering program at SMK Negeri 3 Semarang, selected through a total sampling technique. Data were collected through questionnaires, observations, and interviews, then analyzed using SPSS. The results indicate that student awareness and compliance significantly and simultaneously influence OSH implementation, contributing 78%. The correlation analysis reveals a strong relationship of 88% between the variables. Students with high awareness and compliance demonstrate greater discipline in adhering to OSH procedures in the field. These findings suggest that enhancing education, providing adequate safety facilities, and enforcing strict supervision can further improve OSH implementation in land surveying practices within vocational school environments.

The utilization of OP-AMP as controllers for temperature sensors plays a crucial role in both the manufacturing and automation sectors. Nevertheless, traditional learning approaches often fail to engage students, leading to diminished interest and lower academic performance. To address this issue, an interactive learning media based on Android technology is being developed, aimed at enhancing current teaching methods and improving students' understanding of OP-AMP applications in temperature sensor control. The objectives of this study are threefold: (1) to analyze the viability of the developed learning media, (2) to evaluate the impact on learning outcomes, and (3) to compare the learning improvements between this new media and traditional teaching methods. The research follows the ADDIE model, with data collection carried out via pre-tests and post-tests. Media feasibility was evaluated using CVR and CVI tests, while the cognitive test's validity was measured through Aiken's V and ICC. Data analysis employed a two-tailed t-test and N-Gain calculation. The study involved 72 eleventh-grade students from the Industrial Electronics Engineering program at SMK NU Ungaran. Results indicated that the Android-based interactive learning tool was highly effective, with a CVR above 0.75, an Aiken's V score of 0.90, and an ICC value of 0.797. Moreover, this learning media significantly enhanced students' academic performance, with a t-value of 30.234 and a p-value of 0.000. The experimental group saw a 74.4% improvement in learning outcomes, compared to 67.4% in the control group, demonstrating the media’s effectiveness in teaching OP-AMP applications.