Turning the Art of Karanga Beer Brewing Into a Science: An Example of Humanising Biology Teaching and Learning

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South African National Senior Certificate examination reports consistently reflect poor performance in STEM (science, technology, engineering, and mathematics) subjects when compared to other subjects. This has resulted in a decline in the uptake of STEM subjects because many students perceive them as being difficult to learn. This phenomenon is not unique to South Africa, as many other African and developed countries are facing similar difficulties in terms of student participation in STEM subjects. Reasons for the low uptake of STEM subjects include perceived difficulty, perceived lack of ability, classroom experience of STEM subjects, and lack of enjoyment. Thus, STEM educators across the globe are confronted with the challenge of making the subjects attractive, accessible to, and relevant for students. Humanising the teaching of STEM subjects by building on Indigenous knowledges has been suggested as a way that secondary education could deal with these challenges, and turn them into STEM capabilities. The incorporation of Indigenous and other local knowledges into STEM subjects could promote authentic learning experiences, relevance, and inclusivity if teachers were prepared for this, and appropriate resources made available. In Africa, many children enrol in school while they are concurrently engaged in subsistence economic activities rooted in Indigenous practices. Leveraging the insights gained from these activities could humanise and enhance the relevance of school STEM curricula. Karanga beer brewing is one such activity that we participated in as children and, in this paper, we report our exploration of the science related to Karanga beer brewing and how it can be a way of humanising and promoting the relevance of school science and other STEM subjects.