CHANMARLEE, B.; พานทอง ก.; PRADUJPROM, P. Enhancing Math Problem Solving Skills and Working Memory of Grade 3 Students using a Problem-based Learning Method Together with the Application of Abstract Code Model. Journal of MCU Phetchaburi Review , [S. l.], v. 7, n. 1, p. หน้า 486 – 503, 2024. Disponível em: https://so03.tci-thaijo.org/index.php/JPR/article/view/275275. Acesso em: 16 sep. 2026.