This one day primer course will introduce the basic principles and two essential tools of the CoOPLAGE suite for participation engineering, based on the participatory modeling paradigm. Addressing 8 stages of a participatory decision making protocol deployed worldwide, it will demonstrate various implementation case studies in the field of water management and governance. Inclusion, integration, regulation and autonomy will be discussed. All processes include process and impact monitoring with the ENCORE paradigm. Four practical workshops are proposed, among which two will be selected : • Rapid game design and socio-environmental exploration with Wat-A-Game and MyRiverKit • Designing participatory procedures with PrePar or ParticiPlay • Integrative participatory planning with CoOPLAN • Social justice dialogue with Just-A-Grid