This study aims to (1) the relationship between K3 knowledge and K3 behavior; (2) the relationship between K3 attitudes and K3 behavior; (3) the relationship between K3 knowledge and K3 attitudes and K3 behavior in the workshop of SMK Negeri 5 Padang. This study uses the expost facto method, the data obtained are interval and nominal data. This study uses three types of variables, 1) K3 knowledge variable (X1), 2) K3 attitude variable (X2) and 3) K3 behavior variable (Y). Data collection techniques use questionnaires, observations. The population and sample in this study were students of the Mechanical Engineering Department, Class XI, SMK Negeri 5 Padang, totaling 89 students, the sample was taken using the total sampling technique. The data analysis techniques used are descriptive and multiple regression. Hypothesis testing based on the results of the regression test that has been carried out, the results show that: (1) there is a positive relationship between knowledge and K3 behavior of 35.5% of class XI TPM students of SMK Negeri 5 Padang (2) there is a positive relationship between K3 attitudes and K3 behavior of 37.5% of class XI XI TPM students of SMK Negeri 5 Padang (3) there is a positive relationship between knowledge and K3 attitudes together towards K3 behavior of 40.8% of class XI TPM students of SMK Negeri 5 Padang, from the data there is a relationship between K3 Knowledge and attitudes towards K3 Behavior.

Education plays an important role in improving the quality of human resources, where teachers serve as the key to the success of the teaching and learning process. Prospective teachers need to possess adequate knowledge and skills to carry out teaching responsibilities effectively. The Teaching Practice Program (PLK) - Teaching Assistance is a course designed to help students of the education program at Universitas Negeri Padang develop teaching skills before entering the professional education field. However, based on preliminary observations at SMK Negeri 5 Padang, it was found that PLK-Teaching Assistance students still lacked certain teaching skills, such as mastery of subject matter, use of media and teaching methods, and classroom management. This study aims to determine students' perceptions of the teaching skills of PLK-Teaching Assistance students at SMK Negeri 5 Padang. The results are intended as feedback and improvement to enhance the teaching skills of these students. The research used a quantitative approach. The population consisted of Grade X and XI students of the Mechanical Engineering program, with a total sample of 126 students. The results showed that students' perception of the teaching skills of PLK-Teaching Assistance students in the Mechanical Engineering Education program at SMK Negeri 5 Padang was categorized as good, with a percentage of 67%. This included: 1) questioning skills (56%), 2) reinforcement skills (56%), 3) explanation skills (56%), 4) teaching variation skills (51%), 5) opening and closing learning skills (55%), 6) small group and individual teaching skills (56%)—all categorized as good; and 7) classroom management skills (41%), and 8) small group discussion guidance skills (42%)—both categorized as less satisfactory. Therefore, overall, students' perception of the teaching skills of Universitas Negeri Padang's PLK-Teaching Assistance students in the Mechanical Engineering Education program at SMK Negeri 5 Padang was considered good.

This study aims to analyze the project-based learning model on learning outcomes in class XII Manufacturing Engineering Drawing subjects at SMK Semen Padang. The type of research used in this study is Quasy experimental using one experimental class and one control class. The study involved 20 experimental class students and 20 control class students. Data was collected with test questions in the form of pre-test and post-test to determine learning outcomes in aspects of Knowledge (cognitive), and assessment of student performance to determine learning outcomes in aspects of skills (psychomotor). Analyze the initial data to determine the average of the classes to be used for the determination of the experimental class and the control class. The final data analysis used is the T test. The results showed a significant influence on learning outcomes using a project-based learning model. The results of the T test on the Post-test results obtained a sig (2-tailed) value of 0.004 which is smaller than 0.05 with an average percentage of 71.8 in the Experiment class and 65.1 in the control class. For the T Test on student performance assessment, a sig (2-tailed) value of 0.027 is obtained which is smaller than 0.05. Both T-tests prove that project-based learning models can provide better learning outcomes.