This study aims to analyze the effect of the waterwheel project method on children’s interpersonal intelligence at PAUD Lingkar Berseri Banda Aceh. The study employed a quantitative approach with a pre-experimental design using a one-group pretest-posttest design. The research sample consisted of 12 children in Class B, comprising 7 boys and 5 girls. Data were collected through observation and documentation techniques. The findings showed an improvement in children’s interpersonal intelligence, as indicated by the average pretest score of 1.57 and the average posttest score of 3.57. The hypothesis testing using a paired sample t-test revealed that the t-count value of 41.95 was greater than the t-table value of 1.795, indicating that Hₐ was accepted and H₀ was rejected. The results of the study demonstrate that the waterwheel project method has a positive and significant effect on the interpersonal intelligence of children at PAUD Lingkar Berseri Banda Aceh.
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