<![CDATA[This study focuses on analyzing the influence of the RME (Realistic Mathematics Education) approach combined with open-ended questions and student creativity on mathematics learning achievement, as well as testing the interaction between the approach and student creativity in influencing mathematics learning achievement. The study employs a quantitative approach and quasi-experimental research method. The study was conducted at SMP Negeri 2 Teras, Boyolali, with 2 7th-grade classes as samples, totaling 63 students, selected randomly. Data were collected using test methods, a creativity indicator questionnaire, and documentation. Validity tests, t-tests, two-way ANOVA with unequal cells, and descriptive analysis of the collected data were then conducted. The study findings reveal a significant difference in the RME approach based on open-ended questions and creativity levels on learning outcomes after treatment on students. However, no interaction was found between the learning approach and creativity, meaning the effectiveness of the RME approach with open-ended questions does not depend on students' creativity levels. The RME approach with open-ended questions serves as an effective and inclusive learning method to enhance mathematics learning achievement across various student creativity levels.Keyword: Realistic Mathematics Education, Open-ended Question, learning achievement]]>
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