JANSORN, K.; RATTANARAT, P.; PANNGAM, A. The Development of Problem Solving Ability of Early Childhood Students Through the Science Activities Plan for Early Childhood Level. Ubon Ratchathani Journal of Research and Evaluation, [S. l.], v. 6, n. 2, p. 31–40, 2021. Disponível em: https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/251043. Acesso em: 1 oct. 2026.