This study aims to examine the effect of Realistic Mathematics Education (RME) based on Green Education and self-efficacy on students’ creative thinking ability. The study employed a quasi-experimental method. The population consisted of all eighth-grade students at SMP Beringin Ratu, with a sample of 69 students selected through cluster random sampling. Data were collected using a self-efficacy questionnaire and creative thinking ability test. Two-way ANOVA was used to analyze the data. The results revealed: (1) a significant effect of the RME model with a Green Education approach on students’ creative thinking ability, (2) no significant effect of self-efficacy on creative thinking ability, and (3) a significant interaction between learning model and self-efficacy on creative thinking ability. Further analysis showed that the RME model was more effective in improving creative thinking ability among students with low self-efficacy compared to conventional learning. These findings indicate that learning models that are contextual, collaborative, and environmentally integrated can enhance students’ creative thinking skills regardless of their level of self-efficacy.
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