SAENGKAEW, P.; PANTHONG, A. THE EFFECTS OF LEARNING ACTIVITIES BASED ON THE CONCRETE – PICTORIAL - ABSTRACT APPROACH ON FRACTIONS FOR GRADE 6 STUDENTS. NSRU Journal of Research and Innovation, [S. l.], v. 1, n. 1, p. 1–10, 2026. Disponível em: https://so14.tci-thaijo.org/index.php/PATRU/article/view/2800. Acesso em: 1 oct. 2026.