Students’ repertoire of pictorial transformations in problem solving using the Singapore Bar Model. Práxis Educativa, [S. l.], v. 21, p. 1–21, 2026. DOI: 10.5212/PraxEduc.v.21.24648.002. Disponível em: https://revistas.uepg.br/index.php/praxiseducativa/article/view/24648. Acesso em: 26 jun. 2026.