The Environmental Education Toolkit is aimed primarily at teachers, multipliers and facilitators in Latin America and the Caribbean (LAC), and aims to promote interdisciplinary approaches, with a view to the transversality of environmental education. In the new context of a post-COVID-19 health emergency world, this approach becomes more relevant and necessary to achieve a better vision and understanding of the relationships between humans and nature; between societies, cultures and with the ecosystems on which they depend. In the chapters that make up this publication, an approach is proposed through a methodological proposal for reflection and action, the Interdisciplinary Roundtables for Environmental Education towards Sustainability, whose main objective is to strengthen and complement the environmental education processes that are carried out both in educational centers and in community groups, from an interdisciplinary, transversal perspective and with systemic thinking.