Students collaboratively design a “smart sustainable city” using robotics (LEGO EV3, micro:bit, or Arduino), integrating technological and artistic solutions to promote sustainability, responsible citizenship, and address SDG-related challenges. The project involves developing functional robotic models (e.g., automatic bins, sensor-based lights, weather stations), creating interactive quizzes on SDGs using AppLab and a final performancethat combines theatre, music, and visual art. The action includes international collaboration through job shadowing (SYNAPSES) and sharing outcomes on platforms such as eTwinning.