Young people are taking the initiative and starting to engage in development cooperation. The project is well-received. After the first project, more follow. Around the world, young volunteers are now involved in building health stations, clinics, kindergartens, schools, and water pipelines. The Sling - Movement for Movement has now been active for over twenty years. Since 2015, there has also been a new course program that prepares young people for participation in projects in other countries and cultures. This book focuses on this InterAKTION course and a subsequent construction camp in Ecuador.