The aim of this research is to improve students' learning outcomes and understanding the material regarding the practice of Pancasila principles in everyday life. The research method used is descriptive quantitative. The research was carried out in class II of SDN Wonosari 02, Semarang City in the 2023/2024 academic year. The data collection technique uses tests, which consist of a pretest and posttest. The research subjects were 28 class II students at SDN Wonosari 02 Semarang City, with 14 male students and 14 female students. The data analysis technique uses descriptive statistical techniques.The research results show an increase in learning outcomes as evidenced by the pretest and posttest scores which show completeness results with a percentage value of 68% to 86%. So it can be concluded that the application of the PjBL learning model assisted by puzzle media can improve learning outcomes for material on the practice of Pancasila principles for class II elementary school.