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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.

This research aims to determine the influence of students' learning activities on the ability to understanding mathematical concepts through the STEAM Learning Approach Makerspace model based on PBL on SPLDV materials. As for the type of research Quasi-Experiments. The population in this study was 90 students who were distributed into 3 classes with 2 classes that sampled grades VIII A and VIII C. The sampling techniques in this study used randomized classes and data collection techniques in this study were tests and observations, while the research instruments used preliminary tests and final tests to measure the ability to understand mathematical concepts and observation sheets to see students' learning activities. Data analysis techniques using a two-way ANOVA test. The research showed that there is an influence of the PBL-based Makerspace STEAM Learning Approach model on the ability to understand mathematical concepts, there is no influence on students' learning activities on mathematical concept comprehension capabilities, and there is no interaction between the PBL-based Stem Learning Approach Makerspace model and student learning activities on the ability to understand mathematical concepts. Conclusion, there is a positive direct effect of cognitive structures on the ability to understanding mathematical concepts.