Despite the recognized importance of vocabulary development in grade 3 learners, there exists a significant gap in understanding the specific challenges these students face in enhancing their vocabulary skills. Limited empirical research has been conducted to identify the underlying reasons why grade 3 learners struggle with vocabulary acquisition and retention. Furthermore, there is a lack of research examining the effectiveness of multimedia tools, such as the Superbulary education video and education booklet, in addressing these challenges and improving vocabulary skills in this demographic. This study evaluated the impact of the Superbulary tool, comprising a self-made video and booklet, on enhancing English vocabulary skills among Grade 3 learners during the 2024-2025 school year. The study employed a quantitative approach, utilizing survey questionnaires, pre-tests, and post-tests to measure students' vocabulary proficiency before and after implementing the Superbulary tool. Findings revealed a significant improvement in learners' ability to understand, recall, and use new vocabulary words, as demonstrated by increased post-test scores compared to pre-test results. The statistical evidence underscores the Superbulary tool's effectiveness in improving vocabulary skills, which highlights its potential as a valuable resource for language learning. Therefore, it is recommended to incorporate interactive vocabulary games into the classroom routine to make learning enjoyable and engaging. Additionally, multimedia tools such as animated videos or apps can be utilized to create a dynamic learning experience. Encouraging group activities, such as peer discussions or word-building exercises, can also help reinforce vocabulary skills effectively.