<![CDATA[This study aims to determine the improvement in students' cognitive learning outcomes, the implementation of learning, and student responses to the application of the STEM-based Problem-Based Learning model to Static Fluids. This study used a quantitative method with a pre-experimental research type and a One Group Pretest-Posttest Design. The study was conducted on 35 11th-grade students at a public high school in Cimahi City. The instruments used included a 15-question cognitive ability test, a learning implementation observation sheet, and a student response questionnaire. Improvements in each indicator of student cognitive learning outcomes were analyzed using the N-Gain test. The results showed that the average pre-test score of 65 increased to 87 in the post-test, with an N-Gain value of 0.61, which is categorized as moderate. The implementation of learning at each meeting reached 100% and was categorized as very good. Student responses to the implementation of the learning model also showed excellent results, with an average percentage of 87.04%, including motivation (90.00%), interest (86.99%), and satisfaction (84.14%). Based on these results, it can be concluded that the implementation of the STEM-based Problem-Based Learning model is effective in improving students' cognitive learning outcomes in Static Fluids.]]>
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