Universal Design for Learning isn’t just a set of tools – it’s a culture of relationship and belonging. In this blog, Mirko introduces S.L.I.M., a human‑centred framework for designing inclusive classrooms. He urges educators to smile first so every learner feels welcomed; listen with positive intent to hear students’ hopes, needs and unspoken messages; be genuinely intrigued by learners’ interests, strengths and goals; and make friends by building a classroom community where everyone belongs. By centering empathy and curiosity, S.L.I.M. turns urban classrooms into thriving spaces where students co‑create their learning and barriers fall away.