Gomes, Tâmara Marques da Silva, and Gilda Lisbôa Guimarães. “The Teaching and Learning of Sampling by Students in the 5thgrade of Primary Schoolbased on Theory of Activity”. Em Teia | Revista de Educação Matemática e Tecnológica Iberoamericana 12, no. 3 (August 3, 2021). Accessed July 30, 2026. https://periodicos.ufpe.br/revistas/emteia/article/view/250199.