Tonkunya , A., Yuenyong, C. and Ma-uy, S. (2022) “Enhancing Grade 8 Students’ Conception and Representation about Chemical Isolation”, Journal of Teacher Professional Learning Community (JTPLC) (Online), 2(1), pp. 1–14. available at: https://so05.tci-thaijo.org/index.php/JTPLC/article/view/260225 (accessed: 24 September 2026).