Silva JD da, Agranionh NT, Hilger TR. MATHEMATICAL PROBLEMS OF THE MULTIPLICATION CONCEPTUAL FIELD IN TEXTBOOKS FROM THE 1ST TO THE 3RD YEARS OF PRIMARY SCHOOL. RPEM [Internet]. 2023 May 5 [cited 2026 Oct. 13];12(27):299-316. Available from: https://periodicos-hml.unespar.edu.br/rpem/article/view/7311