Акпаева, А. ., Л. . Лебедева, and М. Мынжасарова. “ABOUT THE PROBLEM OF STUDYING DIFFICULT TOPICS IN THE COURSE OF MATHEMATICS 4 CLASSES OF UPDATED EDUCATION CONTENTS OF THE REPUBLIC OF KAZAKHSTAN”. Bulletin of Abai KazNPU. Series of Physical and Mathematical Sciences, vol. 69, no. 1, June 2021, pp. 18-24, doi:10.51889/2020-1.1728-7901.03.