ROBOVÁ, Jarmila; MORAVCOVÁ, Vlasta; HALAS, Zdeněk; HROMADOVÁ, Jana. Pupils’ Concepts of the Triangle and the Rectangle at the Beginning of Lower Secondary School. Scientia in educatione, [S. l.], v. 10, n. 1, p. 68–89, 2019. DOI: 10.14712/18047106.1211. Disponível em: https://ojs.cuni.cz/scied/article/view/1211. Acesso em: 30 jun. 2025.