<![CDATA[This study aims to determine the comparison of learning activity and learning outcomes of students taught using Project Based Learning (PjBL) and Problem Based Learning (PBL) models on circulatory system material at Senior High School 12 Medan. This research is a quasi-experimental study with a non-equivalent control group design. The population in this study consisted of all students in grade XI Science at SMAN 12 Medan, comprising 7 classes with a total of 251 students. Sample determination was conducted using purposive sampling technique, namely class XI F5 as the PjBL class and class XI F7 as the PBL class, each consisting of 30 students. Data collection used multiple-choice and essay tests to measure cognitive learning outcomes and observation sheets to measure student learning activity. Based on the research results, the posttest score for the PjBL class was 80.3 and the PBL class was 75.5. The percentage of learning activity in the PjBL class was 74% and the PBL class was 68.31%, both categorized as good. The results of the t-test analysis (independent sample t-test) showed a sig (2-tailed) value of 0.000 < 0.05, which means Ha was accepted and Ho was rejected. It can be concluded that the learning activity and learning outcomes of students taught using the PjBL model were higher compared to the PBL model on circulatory system material.]]>
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