Recognizing the urgency of addressing environmental concerns and aiming to support child development, this participatory action research (PAR) focuses on initiating actions for a greener and safer environment for young children in the marginalized ger neighborhoods in Ulaanbaatar the Capital City of Mongolia. In collaboration with parents and involving 311 children aged two to five across 11 groups, this action research has been conducted since September 2021 with the goal of enhancing children's cognitive, emotional, and social development, fostering increased environmental awareness, improving problem-solving skills, and a sense of responsibility. Research findings show that the attitudes and habits towards air pollution, ecological safety, rational water use, and creating a green environment have significantly improved among the participants.

environmental challenges, sustainable kindergarten, action

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