JUCHAROEN, N.; PONGPISANU, S. .; BOONKUSOL, T. Comparison of Learning Achievement and Attitude Toward Thai Language Subject by Problem Based Learning with The Normal Teaching in Grade 2 Student. Saengtham College Journal, Nakhon Phathom, Thailand, v. 16, n. 2, p. 267–284, 2024. Disponível em: https://so01.tci-thaijo.org/index.php/scj/article/view/266513. Acesso em: 2 apr. 2025.