CHANPROM, P. .; KHUM–UN, S.; JIRACHOTDAECHO, G. Examining the Ability to Solve Mathematical Problems of First–Year Secondary School Students through Polya’s Problem–Solving Process. Journal of Humanities and Social Sciences, Rajapruk University, [S. l.], v. 8, n. 1, p. 327–343, 2022. Disponível em: https://so03.tci-thaijo.org/index.php/rpu/article/view/260281. Acesso em: 16 may. 2024.