The results of this study indicate a significant improvement in all three assessment aspects after being treated with the demonstration method. Based on descriptive statistical analysis: In the affective assessment, the average score increased from 66.00 (pretest) to 84.92 (posttest); in the cognitive assessment, the average score increased from 59.56 (pretest) to 81.68 (posttest); and in the psychomotor assessment, the average score increased from 57.68 (pretest) to 81.68 (posttest). The results of the hypothesis test using the Paired Sample T-Test showed a significance value (2-tailed) of 0.000 < 0.05 for all three aspects, meaning H₀ was rejected and Hₐ was accepted. The conclusion of this study is that the application of the demonstration method significantly influenced the learning outcomes of fifth-grade students in volleyball underhand passing at SD Negeri 06 Palembang.
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