The Conference was organized by the European Citizen Science Association (ECSA) on 05-08.10.2022 (Berlin, Germany). The NKUA team participated in this event with three oral presentations, namely: a) “Integrating citizen science in school environmental education within the European Cos4Cloud project: overall strategy and supporting actions” (Maria Daskolia); b) “Children as young researchers and intergenerational ambassadors of Citizen Observatories: A case study of the pedagogical use of Pl@ntnet in an environmental education project” (Zacharenia Daskalaki); and c) Citizen observatories as educational tools in school environmental education: "My own private 1m2" and "Scenting around-the-walk: the environmental odours’ trail” (Matrona Pappa). The NKUA team also presented two poster presentations: a) “What happened to the Forest of Giants?" Integrating a citizen science tool in an interdisciplinary environmental education project for monitoring the flora in the suburban forest of Parnitha” (Anna Trigatzi); and b) ”Expanding the learning potential of a citizen observatory - Young students as contributors, players and designers of a digital game in a school environmental education project” (Zacharenia Daskalaki). In total 390 attendees participated in the Conference. All presentations’ abstracts are available here.