"The project was aimed at children's interest in building the Earth and increasing awareness of the protection of the planet in accordance with the principle of sustainable development.The subject matter of stones is a neglected area in the field of environmental protection and science about it. Over the several decades, man disturbed the Earth's balance, which was 4.5 billion years old. The students learned how the environment was created and what its history was.They understood the ""speech"" of stones as geologists, archaeologists and sculptors do. The project made it possible to instil in students the habit of searching for knowledge, fulfilling leisure time with constructive activities that bring satisfaction and teaching teachers to develop effective educational strategies.Five primary schools from Poland, Bulgaria, France, Italy and Portugal participated in the project. Activities were divided into 6 stages.1 The students mastered the geological structure of our regions. They learned how to recognize the basic minerals and rocks and learned about the age of the Earth. They learned how to take samples of rocks and fossils and describe them properly. They collected specimens for collections in their schools, but also for their colleagues from partner schools to enrich their collections.2 Archeology, history and art history. Students discovered the use of rocks, eg: clay, coal, salt, marble, ores, precious stones and their role of stone in human life from the stone age to the present day. They found information about life in caves and mud huts. They met sculptors and their works. They learned what and how glass was created and participated in glass painting workshops. They extended this knowledge during the exchange in Sicily, participating in pottery workshops and decorating the earthenware. In schools, competitions were organized, the subject of which were rocks.The author of the book ""KamiennyKraków"", prof. Jacek Rajchel, guided students around Krakow, indicating which rocks were used in various periods to build the city. He showed that history and politics affect the type of building material used, eg in the interwar years, basalt cubes imported from Wolyn were used for street paving.3 Soil and its components, soil-forming processes and variability of soils and their functions in shaping the natural environment and landscapes.Participants learned about the importance of humus for soil fertility, made soil maps, analyzed soil properties, conducted experiments regarding their aeration and soaking in plant-growing aspects, and illustrated the dependence of occurrence of plant species on the type of soil. They set up rock gardens and constructed prototypes of sewage treatment plants using rocks for filtration purposes. During the exchange in Portugal, they established a European garden.4 Diversity of the landscape, with particular attention to the shape of the surface and tourist values of the regions.The students prepared lists of inanimate nature monuments and made mock-ups of important places in their regions. During the exchange, they discovered the history of Krakow during the field game and visit to the underground medieval city. In the Jagiellonian University they saw the instruments used by Copernicus and the first map on which America was marked. They got to know the history of Krakow Jews on the basis of matzevot sculptures (Remuh cemetery), and in the synagogues they read symbolism connected with Jewish culture and tradition. During the workshops, they made Krakow's cribs mapping architectural details of Krakow's buildings. In Salt Mine in Wieliczka they learned the genesis of halite and the importance of the mine for Poland throughout history. They observed karst phenomena in the Ojcow.Exchange participants prepared an international program and celebrated the National Education Day together. The choir sang in French, the functions of compere was conducted in Polish, French and English, Italian played on Tarantella fiscaletto and the whole meeting was crowned with a pantomime performance - “The legend of the Wawel Dragon"".5 The literary stage. Students searched for legends, fairy tales, where the theme was rock. They wrote scenarios of theater plays about the search for a philosopher's stone. They put on plays, for which they invited friends and family.6 Developing their own initiatives and creativity, the children held an international debate on ""Our ideas and actions for the future."" They made posters calling for wise management of the Earth's resources. They wrote letters to the authorities, informing them about their observations and appealing for help. These lists were read in Bulgaria in the presence of the city authorities and returned to the magistrates of the partner cities and other people responsible for the environment.We have developed a “Guide to Good Practices” with examples of activities in the form of lesson plans for general use by European theachers."