This article provides a comprehensive analysis of the opportunities, effectiveness, and pedagogical conditions for using web-based platforms to develop subject competencies among low-achieving primary school students. The study employs a combination of theoretical and empirical methods and presents a scientifically grounded interpretation of competence, subject competence, and the notion of the low-achieving learner. The functional and interactive features of modern educational websites (BilimLand, iMektep, LearningApps, Khan Academy Kids, etc.) are examined, with particular emphasis on their role in enhancing students’ learning motivation.

During the experimental phase, the levels of subject knowledge, learning activity, independence, and task-performance dynamics were assessed. The findings demonstrate that systematic use of web resources significantly contributes to the improvement of subject competencies in low-achieving students: the average performance increased by 27.5 %, while learning engagement grew by 1.4 times. The study also identified key pedagogical conditions for the effective integration of web-platforms into the learning process, including consideration of individual learning pace, the use of interactive and game-based tools, gradual task progression, and the incorporation of feedback and self-assessment mechanisms.

Overall, the research confirms that web-based educational platforms serve as an innovative and impactful tool for fostering subject competencies in primary school learners, offering meaningful opportunities to enhance motivation, self-confidence, and academic achievement among low-achieving students.