<![CDATA[This study aimed to determine the effectiveness of education on Clean and Healthy Living Behavior and waste sorting through poster media and interactive demonstrations using a waste bank in improving elementary school students knowledge. This study employed a quantitative approach with a quasi-experimental design using a one-group pre-test and post-test design. The study was conducted among students of SDN Sukorejo 02 Jember, involving 61 respondents selected using total sampling. Data were collected using a questionnaire consisting of 20 multiple-choice questions administered before and after the educational intervention. The education was delivered through poster-based materials accompanied by interactive demonstrations on waste management and waste sorting using a waste bank. Data were analyzed using the Wilcoxon Signed-Rank Test because the pre-test and post-test data were not normally distributed. The results showed that 41 students experienced an increase in knowledge scores, 6 students experienced a decrease, and 14 students showed no change. The Wilcoxon test indicated a significant difference between students knowledge before and after the educational intervention. Therefore, the combination of poster media and interactive demonstrations through a waste bank can serve as an effective educational approach to improve students knowledge of clean and healthy living behavior and waste sorting from an early age.]]>
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