FITRIATI FITRIATI; MARLAINI MARLAINI; ELIZAR ELIZAR. Integrating Rich Task into the Mathematics Classroom to Develop Students’ Higher Order Thinking Skills: A Collaborative Action Research Study in a Secondary School. Elementary Education Online, [S. l.], v. 20, n. 1, p. 479–494, 2021. Disponível em: https://ilkogretim-online.org/index.php/pub/article/view/2035. Acesso em: 15 jan. 2025.