UNIS Hanoi, a non-profit organisation staffed by individuals of more than 60 different nationalities, has been a leading international school for over 30 years and is committed to the integration of Sustainable Development Goals (SDG) into its teaching and learning. The rooftop system will be a visual case study for mathematics and science based activities and discussions on the topic of ‘SDG 13 – Climate Action’, covering global climate change and the reduction of CO2 emissions.