SREETHUNYOO, A.; YUTAKOM, N. Grade 1-3 Science Teachers’ Perception About Scientific Understanding and Problems in Teaching About Matter. Kasetsart Journal of Social Sciences, [S. l.], v. 28, n. 3, p. 301–308, 2007. Disponível em: https://so04.tci-thaijo.org/index.php/kjss/article/view/246457. Acesso em: 16 sep. 2026.