This paper examines the theoretical and empirical aspects of teaching grammar to young learners through online platforms. The rapid development of digital technologies and the transition to online education have significantly influenced language teaching methodologies. Drawing on established theories of teaching young learners and technology-enhanced learning, the study analyzes how online platforms support grammar acquisition, motivation, and learner engagement. Using qualitative and quantitative research methods, the findings reveal that interactive digital tools and multimedia resources contribute to improved learning outcomes and foster positive attitudes toward grammar learning among young learners.