<![CDATA[This study aims to develop a learning device based on meaningful learning as an effort to foster green behavior among elementary school students, specifically at SD Negeri Gumpang 01. The background of this research is rooted in the importance of primary education in instilling environmental awareness and responsible behavior from an early age. The meaningful learning approach was chosen because it allows students to connect new knowledge with their existing experiences or prior knowledge, making the learning process more meaningful and contextual to everyday life. The research method employed is research and development (R&D) using a modified Borg & Gall development model. The development process includes needs analysis, planning, product development, expert validation, revision, and limited trials. Data collection instruments consist of expert validation sheets, student and teacher response questionnaires, as well as observations of learning implementation and student green behavior indicators. The results show that the developed learning devices—consisting of lesson plans (RPP), student worksheets (LKPD), and teaching materials—are highly valid and feasible for classroom use. Furthermore, the implementation of these devices improved students’ understanding of environmental issues and encouraged behavioral changes toward green behavior, such as disposing of waste properly, conserving energy, and caring for school plants. Therefore, learning tools based on meaningful learning have proven effective in supporting the formation of green behavior in elementary school settings. This study recommends the systematic integration of environmental education values into daily teaching and learning activities in primary schools.]]>
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