"The project K2 Erasmus + ""Clean World"" has as its main objective the internationalization of our students, the awareness of a clean, sosteinable world, an openness to cultures and lifestyles, different from ours, to foster the tolerance, equality and social inclusion and the exchange of innovative resources and methodologies between the teachers involve For these reasons we have chosen the following horizontal priority:- Supporting individuals in acquiring and developing basic skills and key competencesAnd as school priorities:- Energy and resources- Environment and weather change- Citizen participation / Responsible citizenship.Moreover, we consider this project as a process of learning for the whole institution (teachers, students and families). The participants in our schools have to take the opportunity of growing personally and professionally as a consequence of the participation in the project Erasmus+ KA2. The preparation, implementation and assessesment of our project of European mobilities, and the dissemination of our results, will make students aware of the neccessity of caring for our environment, seeking the global sostenaibility, being part of an united Europe and developing their key competences.It is a project for 24 months, which will be carried out by the Sciences and Foreign Languages departments and we will have 4 mobilities for teachers and students. Our strategic Plan will have activities before, during and after the mobilities.There is a clear relationship between the necessities of our school with regards to the European and collaboration awareness and the activities shown in this project with reference to some issues: curriculum, European dimension, management competences, both, students and teachers ' linguistic competences, the new teaching methods or innovating tools and the organization of teaching and learning.Our aim is to achieve the following outcomes after the mobilities:-Their immersion in the cultural dailylife to improve the understanding and use of English as a lingua franca for an effective communication.-The awareness of a better and sustainable world with the cooperative work in teams will let us show our students a complete vision of new resources - The participation in collaborative learning intercultural projects will help us to adopt new methodologies based on projects research to encourage our students to compare our own culture and lifestyle with the other European countries and the European culture in general.- The participants will have the option of sharing materials, which will be part of a bank of resources for the other partners at school, very useful for the preparation of didactic sequences.- The relationship with the European teachers who participate in the project and the link of our students and European students will help us share examples of good practices and will proportionate an European dimension to the Secondary stage in our institution.Finally, we intend some key learning outcomes, within the strategic frame of the school about quality and internationalization to improve our teaching practice."