WORANETSUDATHIP, N. . Examine First Grade Students’ Strategies of Solving Open-ended Problems on Addition. Asia Research Network Journal of Education, [S. l.], v. 1, n. 1, p. 15–24, 2021. Disponível em: https://so05.tci-thaijo.org/index.php/arnje/article/view/250020. Acesso em: 18 may. 2024.