Environmental damage has become a serious problem of the world today. Eco-Pedagogy is essential for early childhood to raise awareness, role, and involvement in addressing environmental issues. The study aims to develop a problem-based learning method with gamification in Eco-pedagogy to provide environmental knowledge and environmental awareness through informal early-childhood education. The subject is children aged 5-7 years in Kampung Kramat Malang, Indonesia (a slum on the riverbank and built on the public cemetery, which has been transformed into a thematic tourism village in Malang). This study is a research and development using the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) development model with qualitative and descriptive data analysis techniques. The results showed that the problem-based learning instructional design with gamification approach can provide the environmental awareness on children's cognitive and habituation.

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