Довгий, Олег. “FORMATION OF MATHEMATICAL SKILLS OF PRE-SCHOOLERS AND PRIMARY CLASS STUDENTS AS A CONDITION FOR THE FORMATION OF THEIR MATHEMATICAL COMPETENCE”. Modern engineering and innovative technologies 2, no. 24-02 (December 30, 2022): 95–100. Accessed May 7, 2024. https://www.moderntechno.de/index.php/meit/article/view/meit24-02-030.