<![CDATA[This study aimed to examine student activity and the effect of Educaplay-based educational game media on the learning outcomes of second-grade students in addition at SDN Margorejo 1/403 Surabaya. A quantitative approach was employed using a quasi-experimental method with a posttest-only control group design. Data were collected through learning outcome tests and observations of student activities and were analyzed using normality, homogeneity, and t-tests. The results showed that the mean learning outcome of the experimental class was higher than that of the control class. The t-test yielded a significance value of < 0.05, indicating that Educaplay-based learning media had a positive and significant effect on students’ learning outcomes in addition. The use of educational games also provided an interactive learning experience that encouraged students to participate actively during the learning process. Therefore, Educaplay-based educational game media can be considered an effective and innovative alternative for improving elementary students’ mathematics learning outcomes, particularly in addition learning.]]>
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