This study aims to analyze the effect of the Problem Based Learning model on students' creative thinking skills in Natural and Social Science subjects in elementary schools. The research method used a Quantitative Quasi Experiment with a Non-Equivalent Control Group design. Research data was collected through pretest and posttest, followed by data analysis, Hypotheses were analyzed using the Independent Sample t-test and N-gain test. The results of the study indicate a significant increase in the creative thinking abilities of students in the experimental class who received learning using the Problem-Based Learning model, achieving an average N-gain score of 79.6 (high category), while the control class, which received teacher-centered learning, only achieved 30.6 (low category). Also, the Independent Sample t-test produced a significance value of < 0.001 in the posttest results, indicating a significant difference between the two classes after the treatment. Thus, it can be concluded that the Problem-Based Learning model has a positive effect on improving the creative thinking skills of elementary school students in the Natural and Social Science subject.
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