This study aims to explore the concept of eco-connectivity that appears in online-based PJJ for mentally disabled children. Furthermore, the study conducted discourse on conventional learning models to understand the need for developing current learning models. Qualitative research with a case study approach was used in this study to examine the phenomenon of eco-connectivity of art learning for mentally disabled children at SLB Gedangan Sidoarjo, East Java. The research subjects were IB and AM, mentally disabled children C in SLB Gedangan Sidoarjo, East Java. This research was conducted from September 2020 to January 2021. The data obtained were analyzed from John Dewey about art education and its existence, Cathy Malchiodi about education for children with special needs, and learning connectivity from George Siemens. The results showed that learning the art of mentally disabled children online led to parental collaboration and environmental management to help the learning process. This refers to the concept of eco-connectivity, which utilizes the integration of the environment around mentally disabled children to support ongoing academic nuances. Furthermore, eco-connectivity maximizes teachers' role in adjusting circumstances by designing learning according to essential competencies and making tutorials that facilitate children's learning with the help of children's learning environments. Eco-connectivity can also be seen in the assessment process by reviewing children's work and interviews with parents. This provides a comprehensive assessment, which further strengthens teachers, parents, and the environment to support mentally disabled children's competence through art learning