Pawantao, C., & Suttiwan, W. (2026). SCIENTIFIC EXPLANATION ABILITY OF GRADE 7 STUDENTS ON DENSITY ANDFLOATING–SINKING THROUGH THE CLAIM, EVIDENCE, AND REASONING (CER MODEL) FRAMEWORK. Research and Development Institute Journal of Chaiyaphum Rajabhat University, 8(2), 393–407. retrieved from https://so10.tci-thaijo.org/index.php/rdicpru/article/view/3546