Zambrowska, Małgorzata. “Geometry in the First Years of School Education in the Context of Selected Curricula and Methodological Guides for Teachers in the Years 1773 – 2020”. Annales Universitatis Paedagogicae Cracoviensis | Studia ad Didacticam Mathematicae Pertinentia 12 (December 31, 2020): 250–259. Accessed May 2, 2024. https://didacticammath.uken.krakow.pl/article/view/8469.