The coordinator of the project called “Developing 21st Century Skills with Inspiration From Nature” is Poland, partners are Spain, Greece, Italy and Turkey.The duration of the project is 24 months.Totally 120 students of 12-14 aged and 40 staff will participate in LTTAs.The natural world is more than a source of beauty and admiration; it provides ideal opportunities to teach the fascinating world of STEAM and 21st century skills.Nature motivates students to learn, keeps them careful, creates their imagination, and develops their Math, Science, Art, Engineering and Technlogy skills using the five sense organs.The nature-inspired STEAM will reveal a powerful curriculum that teaches secondary school students a wide range of STEAM subjects and skills with an approach inspired by nature.Students will gain expertise in science, technology, engineering, art and mathematics in cooperation with students from other European countries. Our objectives are; encouraging students to integrate knowledge among disciplines; creating opportunities for students to become 21st century innovative, creative, solution-generating, critical thinkers, interested in science and cooperating with others; to develop new content and encourage the integration of STEAM skills in the curriculum to enable teachers to teach STEAM subjects differently and more appealingly.The activities we planned to achieve are; project opening gala, forest activities, making nature people, insect hotels, solar cells, terrarium, bird feeders, 3D shapes, sundials; building towers and bridges; workshop about airplanes modeled after birds; object designing in the mud workshop; creating simple machines from natural objects and weather station; designing ecological and smart homes inspired by nature, solar ovens; making sun prints using sunscreen, nature collages using collected leaves and musical instruments from natural objects; restoration works; searching and recording the species data observed; discovering fractals in nature; designing mathematical structures using origami, Maker Competition, eTwinning seminar, STEAM Fair, entrepreneur pitch and speaker events and using Audubon Bird Guide and iNaturalist apps.Contact persons in partner schools, coordinator in the whole project are responsible for the project management. All schools meet once a month, fulfill the duties and responsibilities according to the 24-months work schedule and inform the coordinator from the result.The results are; Students gain STEAM skills inspired by nature, understand how mathematics, arts, sciences, technology and engineering work together, are interested in scientific professions, learn to think critically and produce solutions to problems. Students' awareness of STEAM issues and their ability to apply interdisciplinary integration, knowledge and skills are increased; Resources related to STEAM will increase, school staff and school quality will increase, integration of acquired knowledge and skills will be ensured in the curriculum, cooperation between partner schools and key stakeholders will be strengthened.Teachers will learn new practices to associate nature with STEAM; students will strive to benefit from nature, to be inspired and turn it into a product. Participating teachers will improve their professional competencies in European dimension.Students learn to relate STEAM disciplines, develop problem solving, critical thinking, questioning, creativity skills, and are interested in scientific issues.Teachers will learn different methods and techniques in European level, they can develop a more innovative curriculum by integrating good practices into their curriculum.Exchange of best practices in nature will be included in the curriculum of partner schools, so we will use the new knowledge and skills we have learned in our lessons and further develop them.Students will use their 21st century knowledge and skills in the next educational steps and be more successful.Key staff will share the project results and outputs with new staff who will come to school later, and will encourage them to take advantage of this experience.