SUNDE, Pernille; PIND, Pernille; SUNDE, Peter. Perceived difficulty of numbers relates to self-reported achievement in adults. MONA - Matematik- og Naturfagsdidaktik, [S. l.], v. 24, n. S, p. 11, 2024. DOI: 10.7146/mona.v24iS.150689. Disponível em: https://tidsskrift.dk/mona/article/view/150689. Acesso em: 6 dec. 2025.