Schriftliche Subtraktion im neuen Volksschullehrplan. R&E-SOURCE, [S. l.], v. 12, n. 2, p. 4–14, 2025. DOI: 10.53349/re-source.2025.i2.a1465. Disponível em: https://journal.ph-noe.ac.at/index.php/resource/article/view/1465. Acesso em: 22 may. 2025.