<![CDATA[This study aimed to develop and validate the reliability and validity of a mathematical well-being scale for prospective elementary school teachers. A quantitative psychometric design was employed, using Confirmatory Factor Analysis (CFA) to test the hypothesized factor structure. The study involved 204 prospective elementary school teachers in Indonesia, who completed a questionnaire assessing seven dimensions of mathematical well-being: accomplishment, cognition, engagement, meaning, perseverance, positive emotions, and relationships. Results indicated that all dimensions had significant factor loadings and good convergent validity, with Average Variance Extracted (AVE) values above 0.50 for most dimensions. Reliability tests showed high coefficients of omega (ω) and alpha (α), and Heterotrait-Monotrait Ratio (HTMT) analysis indicated good discrimination among dimensions. The CFA model also demonstrated acceptable goodness-of-fit, with CFI = 0.93, TLI = 0.95, SRMR = 0.03, and RMSEA = 0.04. These findings confirm that the scale is valid and reliable, offering a useful tool to assess mathematical well-being among prospective elementary school teachers and informing the design of training programs to enhance the quality of mathematics teaching.]]>
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