ANDREWS, P.; PALM KAPLAN, K. PISA, TIMSS and Swedish students’ knowledge of linear equations: A ‘telling’ case of a system fixing something that may not be broken. Annales Universitatis Paedagogicae Cracoviensis | Studia ad Didacticam Mathematicae Pertinentia, [S. l.], v. 12, p. 5–29, 2020. DOI: 10.24917/20809751.12.1. Disponível em: https://didacticammath.uken.krakow.pl/article/view/8417. Acesso em: 6 may. 2024.