The Learning, Teaching, and Training (LTT) activities, as part of this project, aim to strengthen teachers' professional competencies in STEAM education by introducing innovative teaching methodologies based on sustainability and digitalization. Two LTTs will take place during the project, as part of Work Package 3 (WP3). Teachers who will participate in these trainings will explore inquiry-based approaches, digital tools, and hands-on practices that promote active student engagement. The main purpose of the LTTs is to empower educators to adopt student-centered learning models that foster creativity, critical thinking, and problem-solving skills. Through these sessions, teachers will create learning scenarios, collaborate across borders, and build a strong foundation for applying new methods in their schools. The LTTs are also designed to encourage peer learning, the exchange of best practices, and the integration of digital technologies—such as micro:bit and Arduino—into science and technology curricula, thereby contributing to the broader goals of educational innovation and digital transformation