Within the framework of systemic digitalisation of education, the task of assessing the effectiveness of new pedagogical tools has become critically relevant. This article was devoted to the experimental verification of the impact of electronic educational resources (EERs) on the quality of mathematics training among primary school students. The main purpose of the study was to determine the effectiveness of a methodology for teaching mathematics that integrates digital technologies. The research was conducted in the format of a pedagogical experiment during the 2022-2024 academic years at Secondary School No. 8 in Bishkek. In the course of the experimental work, specially developed lesson models incorporating multimedia presentations and specialised EERs such as IBILIM, LearningApps and Komodo were introduced into the learning process. The BaalooApp application was used to monitor skill development and conduct formative assessment. The effectiveness of the experiment was evaluated by analysing and comparing diagnostic and final assessment data. The analysis confirmed an improvement in mathematics training outcomes in the experimental groups. Compared with the baseline and control indicators, the quality of students’ knowledge who used EERs increased by 20%. This demonstrates that the integration of digital resources and interactive teaching methods can significantly enhance the acquisition of mathematical knowledge and skills. The findings of the study revealed high effectiveness of the developed methodology employing electronic educational resources. It was established that systematic and methodologically grounded use of EERs not only increases students’ motivation but also ensures a qualitative leap in the development of mathematical and information competences, which holds significant practical value for the further modernisation of the educational process