The CIRCLEcity project designs a collaborative action research with children (11-12 years old) living in urban areas to co-investigate their perceptions of sustainable/unsustainable consumption behaviors and their approach to utilizing circularity in their action plans targeting their unsustainable consumption behaviors toward change in favor of sustainable development responding to SDG # 11 (sustainable communities) and 12 (sustainable consumption). CIRCLEcity receives a grant from Children's Rights Research Fund (SWOL), and the project starts in September 2023.