Such, J., & Moyer-Packenham, P. (2016). How affordances and constraints of physical and virtual manipulatives support the development of procedural fluency and algorithmic thinking in Mathematics. Revista Internacional De Pesquisa Em Educação Matemática, 6(2), 245-265. Recuperado de https://sbembrasil.org.br/periodicos/index.php/ripem/article/view/1222