This study aimed to determine the effect of Wordwall games on vocabulary skills. A quantitative approach with a one-group pretest-posttest design was employed, involving 16 children from Group B1. The subjects were children aged 5–6 years at RA Al-Ikhlas Birobuli, Palu City. Data were collected using a vocabulary skill test administered before and after eight sessions of Wordwall game interventions. The data were analyzed using descriptive statistics—specifically the mean, standard deviation, and maximum and minimum scores—as well as parametric inferential statistics, namely the paired-samples t-test. The results showed that the average vocabulary skill score increased from 12.62 to 27.38. Regarding performance categories, 87.5% of the children fell into the "Developing Very Well" (BSB) category, while 12.5% ??fell into the "Developing as Expected" (BSH) category. The paired-samples t-test yielded a significance value of 0.000 (p < 0.05), indicating that Wordwall games had a significant effect on the children's vocabulary skills. With an average score increase of 14.75 points, Wordwall proved to be an effective, interactive, and engaging learning medium for enhancing the vocabulary skills of early childhood learners.
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