<![CDATA[Purpose – Student mathematical communication skills in Indonesia remain relatively low, with mathematical disposition as one contributing factor. This study aims to determine the level of mathematical disposition and mathematical communication skills at SDIT Al Fattah Kuningan, and to examine whether mathematical disposition significantly influences mathematical communication skills at the school. Methodology – This quantitative study drew a sample of 38 students from a population of 186, selected through purposive sampling based on the criterion of having completed the Computer-Based National Assessment (ANBK). A validated, reliable questionnaire measured mathematical disposition, while test items adapted from ANBK questions measured mathematical communication ability. Data were analyzed using normality, homogeneity, linearity, and autocorrelation tests, followed by simple linear regression. Findings – Mathematical disposition at SDIT Al Fattah Kuningan falls into the medium category, at 63% (24 students), while mathematical communication ability falls into the medium category, at 37% (14 students). The regression equation obtained was Y = 8.503 + 0.612X, with a significance value of 0.009 (< 0.05), leading to the rejection of H0 and acceptance of Ha, confirming a significant influence of mathematical disposition on mathematical communication skills. Novelty – This study provides empirical evidence on the relationship between mathematical disposition and mathematical communication ability specifically within an Islamic elementary school (SDIT) context, an area with limited prior research. Significance – The findings are beneficial for teachers and school policymakers at SDIT Al Fattah Kuningan in designing learning strategies that strengthen students' mathematical disposition to improve their mathematical communication skills.]]>
