Teaching Mathematics and Sustainability (A narration of a rough journey)

This note presents reflections drawn from my recent experiences in teaching a course on mathematics and sustainability, with a particular emphasis on raising awareness of the topic and its broader implications. The lectures were structured to bridge conceptual understanding with practical engagement–combining mathematical modeling, critical discussion, and case studies on real-world sustainability challenges. Much of the actual work was done through interactive problem-solving sessions, group discussions, and short projects where students explored how quantitative reasoning can inform sustainable decision-making. The aim was not only to convey technical tools, but also to cultivate a deeper appreciation of how mathematics can serve as a framework for interpreting and addressing complex societal issues.