CHAIYACHAT, C.; PANTHONG, A. Development of Mathematical Problem-Solving Skills using Polya’s Problem-Solving Process Combined with Bar Model Technique on Linear Equations with One Variable for Grade 7 Students in The Wachiraprakan School. NSRU Journal of Research and Innovation, [S. l.], v. 1, n. 2, p. 58–72, 2026. Disponível em: https://so14.tci-thaijo.org/index.php/PATRU/article/view/2801. Acesso em: 1 oct. 2026.