"Our school has a long history in Comenius projects, so we thought it was necessary to resume the European dimension with an Erasmus plus project and to be able to expand our educational work outside the center. For this resason we set objectives both at the teaching level (developing new methodology and the use of new technologies applied to education) and for students (improving their linguistic, civic and civic competence).Therefore, based on the work carried out in our center and observing the current situation of the planet and the need to become aware of the environmental problems that our society has to face, we have developed our project in two fundamental phases. In the first phase we studied the past, students have learned by researching, reading and traveling how the human being has used natural resources throughout history. What they have bequeathed us and what we should keep, and along with the misuse of them that has led us to the current situation. This work has resulted in the creation in each center of some historic Big Books that will be part of the libraries of the centers. In these large books, students have reflected their learning about prehistory, the ancient age and the modern age, using different techniques or plastic arts. In this phase three training meetings have been held. In the first meeting the students made a movie maker presentation of their country and center, in this way they have known each other better and help to disseminate the proyect. At the same time, new technological resources were learned for the realization of the movie maker and for other activities, such as Kahoot (for the evaluation of reading comprehension), the Q reader app and Etwinning platform (for the dissemination). We also create a blog and a Facebook group. A second training meeting on cooperative groups and project work for this methodology to be implemented throughout the project. And in the third meeting we focus on conflict resolution in different variants (peer mediation, emotional education and assertive language), to prevent or solve problems arising from teamwork, accepting differences and valuing them.The second phase of the project has been the implementation of solutions for all those problems studied. We started with a part of awareness about the enviroment situation. We read books, watched videos and organized lectures to learn about the current problems of the planet, even songs were created at the Carnival time.And a practical phase in which students visited recycling centers or local waste facilities, cleaned green areas or made waste selection. In this phase the training meeting focused on the environment and how to improve it.All this work produce environmental decalogues in different formats and a green area in the schools. We make a final decalogue made in collaborative work all the students from the different countries, taking into account the contributions of all. At the same time in each center it has improved its surroundings with a school garden: planting trees , flowers or vegetables. We chose Earth day to celebrate our compromise with the planet, this date has been established in the centers, as the most appropriate celebration to show our commitment to the environment. We made a flash mob together, we chose Michael Jackon's song ""Heal the world"" and we dressed in blue, a reflection of the planet Earth."