We want to give you an understanding of everyday life in the laboratory and of a scientist or professor. In the primary school course "Understanding climate change with science", which is aimed at pupils in grades 5 to 7/8, Hermit the hermit crab introduces pupils to the problems of global warming and ocean acidification, taking a closer look at both the role of plants and the role of humans. After an entertaining introduction to the topic with safety instructions and a small laboratory equipment quiz, the young researchers experiment very independently in groups of two or three. Hermit "guides" them through the experiments via tablets, asks questions and gives individual feedback. In this way, new research is directly secured and put into context. A final climate bingo raises pupils' awareness of how to recognise and respect climate-friendly behaviour in everyday life.