[en] Five teachers from a Sámi lower secondary school participated in two workshops on culturally-responsive mathematics teaching. During the first workshop, the teachers chose to focus on developing a unit about lávvu, the Sámi tent, to be taught between workshops. Their experiences are analysed with respect to Self-Determination Theory, which claims that all humans have a basic need for autonomy, competence and relatedness to others. The analysis of teachers' written notes reveals that the need for autonomy appeared as a need for inspiration and for courage. The need for competence concerned relating mathematics teaching to the two community resilience factors i) Sámi language competence and ii) traditional ecological knowledge. The need for relatedness to others was linked to Indigenous peoples, other teachers at their school, and teachers at other Sámi schools.