In order to create capable citizens, able to continue and develop culture, environmental education plays an essential role in shaping values, attitudes and education that promote and secure a sustainable future. At the same time, environmental education is based on the promotion of the citizens’ responsible behavior towards nature, and on the effective treatment of environmental problems. This paper focuses on critical thinking and holistic problem-solving skills that enable learners to make decisions and act collectively. In the present work, we have created and present innovative teaching approaches to water as the most valuable natural resource of the planet Earth. The ultimate purpose of this project is to realize the necessity, conservation and protection of water resources. An effort is being made to change the environmental behavior of learners through multidisciplinary methods and activities. The holistic approach of the subject includes the necessary theory as well as innovative teaching approaches (teaching forms, conceptual maps and exercises in a playful form). The research population comprises secondary school teachers, specifically from a private high school and lyceum (Aristotle College of Thessaloniki). The quantitative research was performed using questionnaires following the Likert 1 - 5 scale. The data were processed with the SPSS 21.0 statistical program using descriptive statistical analysis techniques, and Cronbach's alpha was tested. The results of this paper have shown that school can be transformed into a space of creative expression and imagination development, with the contribution of experiential activities. Through the innovative teaching approaches, teachers have shown an increased level of satisfaction pupils participate more actively in the classroom processes and show an increased degree of interaction and awareness about environmental issues.
Keywords: Water, Environmental Education, Teaching methods;