Résumé
This chapter introduces CoOPLAN, a specific approach for participatory planning aiming at enabling a group of participants to co-construct together a collective action plan to change together in their environment. The chapter provides a detailed description of the various steps of the CoOPLAN process and illustrates how it was implemented in a specific case in Uganda. The chapter also includes a comparative discussion of the implementation of the CoOPLAN approach in four cases (Uganda, metropolitan France, New-Caledonia, Tunisia). It highlights the modifications that were made to adapt the approach to the specific context of each case.