Teerachot Lokkathat และ Natthaphon Hongthong; Narongsak Rorbkorb. (2025) The Impact of the Concrete-Pictorial-Abstract (CPA) approach on the mathematical communication and conceptual understanding of decimals in Grade-6 students. <i>Journal of Science and Science Education</i>, <i>8</i>(1), 1-13.Teerachot Lokkathat และ Natthaphon Hongthong; Narongsak Rorbkorb. "The Impact of the Concrete-Pictorial-Abstract (CPA) approach on the mathematical communication and conceptual understanding of decimals in Grade-6 students". Journal of Science and Science Education 8 (2025):1-13.Teerachot Lokkathat และ Natthaphon Hongthong; Narongsak Rorbkorb. The Impact of the Concrete-Pictorial-Abstract (CPA) approach on the mathematical communication and conceptual understanding of decimals in Grade-6 students. Faculty of Science, Ubon Ratchathani University:ม.ป.ท. 2025.