Malina, Anna. “Factors of a Creative Approach of a Teacher in Building Abstract Geometric Concepts by Children at a Pre-School and Early School Age”. Elementary Education in Theory and Practice0, no. 26/4 (July 6, 2016): 37-44. Accessed September 14, 2026. https://czasopisma.ignatianum.edu.pl/eetp/article/view/314.