Bandung, Indonesia — Science Education Study Program, Universitas Pendidikan Indonesia (UPI), in collaboration with Korea National University of Education (KNUE) through the UNITWIN Program, successfully held the 2025 KNUE-UPI Teacher Training: Integrating Sustainability Issues in the Lessons to Promote Sustainability Understanding, Awareness, and Action. The three-day training took place from Wednesday to Friday, 6–8 August 2025, at the Auditorium of FPMIPA Building A, UPI.

This training, free of charge, invited science teachers from across Indonesia to enhance their teaching practices by integrating sustainability issues into science lessons. Distinguished speakers from both Korea and Indonesia delivered lectures, tutorials, and hands-on workshops throughout the event.

Day 1 opened with Prof. Nam-hwa Kang (KNUE), who introduced “Creating and Applying Digital Twins in Science Classrooms.” Participants engaged in a hands-on tutorial to design a virtual laboratory using the Delightex platform. In the second session, Prof. Young-heung Kim (KNUE) presented an engineering education program based on sustainable energy to foster technological and engineering literacy. Teachers even designed mini cars and tested them in a small competition. The day concluded with Prof. Dr. phil. Ari Widodo, M.Ed (UPI), who highlighted the role of deep learning in science education and its implementation in science lessons.

On Day 2, Prof. Youngsun Kwak (KNUE) discussed deep learning and concept-based curriculum design in science education, guiding participants to formulate “big ideas” from science concepts. The second session featured Dr. Irma Rahma Suwarma (UPI), who explained the use of learning media to support deep learning. Teachers then practiced creating digital electricity circuits using TinkerCAD.

Day 3 was held online and focused on a project-based activity. Participants collaborated to design lesson plans (modul ajar) aligned with the theme of the training—integrating sustainability into science lessons.

The program also featured contributions from other UPI experts, including Dr. Rini Solihat, M.Si. and Tuszie Widhiyanti, Ph.D., who enriched the discussions with their insights on science education and sustainability. Through this training, participants not only gained new knowledge and skills but also strengthened their commitment to fostering sustainability awareness and action in classrooms.