SUNDE, P.; PIND, P.; SUNDE, P. Perceived difficulty of numbers relates to self-reported achievement in adults. MONA - Matematik- og Naturfagsdidaktik, [S. l.], v. 24, n. Særnummer, p. 11, 2024. Disponível em: https://tidsskrift.dk/mona/article/view/150689. Acesso em: 7 nov. 2024.