POGORELOVA, L.; SHEEHAN-BRAINE, S.; JOHN, A.; WASSERMAN, N. A Problem-based Curriculum to Conceptually Develop the Multiplication Principle for Counting. Journal of Mathematics Education at Teachers College, [S. l.], v. 15, n. 1, p. 37–43, 2024. DOI: 10.52214/jmetc.v15i1.11949. Disponível em: https://journals.library.columbia.edu/index.php/jmetc/article/view/11949. Acesso em: 30 jun. 2024.