Artist Rouble Nagi saw children in slums growing up without schools or safe housing. To solve this, she turned grey walls into "living textbooks" with paint and built over 800 learning centres across India. She also repaired 1.5 lakh homes to give families dignity. This work won her the $1M Global Teacher Prize. The benefit is life-changing: thousands of kids now have free education and safe homes, giving them the self-worth and skills needed to escape poverty and dream of a better future.