Abstract: This research was motivated by the low problem-solving ability of fourth-grade students in Social Studies learning at SDN 2 Cigantang, as indicated by only 28.57% of students achieving the Minimum Mastery Criteria on the preliminary test. This study aimed to describe the implementation of the Problem Based Learning (PBL) model in improving students’ problem-solving abilities. The research method used was Classroom Action Research based on the Kemmis and McTaggart model, conducted in two cycles consisting of planning, implementation, observation, and reflection stages. The research subjects were 35 fourth-grade students of SDN 2 Cigantang. Data collection techniques included observation, tests, and documentation. The results showed that the implementation of the Problem Based Learning model was able to improve students’ problem-solving abilities. The percentage of learning mastery increased from 28.57% in the pre-cycle to 62.86% in Cycle I and reached 91.43% in Cycle II. Therefore, the Problem Based Learning model proved effective in improving students’ problem-solving abilities in Social Studies learning and can be used as an alternative active and student-centered learning model in elementary schools. Keyword: Problem Based Learning; problem solving; Social Studies learning
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