<![CDATA[This study aims to determine how effective the use of number wheel media is in improving the learning concentration of children in group B at Ilmi Insani Jaya Kindergarten Medan. The research method used is an experiment with a pre-experimental design containing one group pretest and posttest design. A total of 11 children became the sample in this study, and the sample selection was done through a total sampling technique. The data collection instruments used include observation and documentation guidelines. For statistical analysis, the Wilcoxon signed rank test was used. The findings of this study indicate that the application of number wheel media successfully improved the learning concentration of children in group B at Ilmi Insani Jaya Kindergarten Medan. This can be seen from the increase in the average value of children's learning concentration, where the average value in the pretest was 5.27 and in the posttest increased to 10.5. The results of the hypothesis analysis using the Wilcoxon test showed an Asymp. Sig value of 0.003 which is smaller than 0.05. Therefore, the null hypothesis (Ho) is rejected and the alternative hypothesis (Ha) is accepted, which means that there is effectiveness in using the number wheel media in increasing the learning concentration of group B children at Ilmi Insani Jaya Kindergarten Medan.]]>
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