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This study aims to contribute to research on systemic thinking in biology education, particularly how to best equip pre-service teachers to introduce health problems such as the COVID-19 pandemic using the “One Health” approach. We attempt to explore to what extent a group of pre-service teachers identify our lifestyle and relationships with nature as factors that contribute to the emergence of future pandemics. The research questions are as follows: (1) What dimensions of the One Health approach did the students identify as potential causes that can produce and prevent future pandemics such as the COVID-19 disease? (2) To what extent did the students show a systemic view aligned to the One Health approach? The participants were 43 pre-service elementary teachers working on a set of activities about the COVID-19 pandemic, in which they were asked about the potential causes of and ways to prevent future pandemics. Content analysis of individual written responses is applied for addressing the research questions, focusing on the dimensions of the One Health approach and the level of system thinking reflected. Most participants focused on the human dimension and a few mentioned environmental and animal dimensions, which points to the need to integrate the One Health notion into teacher training.

Resumen: En este trabajo se analiza la construcción del modelo de sistema inmunológico por parte de estudiantes y su transferencia a otros contextos, mediante diversas situaciones contextualizadas, que parten de una controversia sociocientífica sobre la vacunación. Se estudia cómo influye la ayuda del profesorado en la construcción de dicho modelo y el desarrollo de la competencia argumentativa en la toma de decisiones sobre aspectos de salud relacionados con el citado modelo. El estudio compara datos de las producciones escritas y las discusiones recogidas durante dos años en el Grado de Educación Primaria. Los resultados muestran mayor nivel del modelo construido y transferido el segundo año, que podría deberse a los cambios en las actividades y en la acción de las profesoras. La competencia argumentativa mejora en los dos cursos, hallando diferencias según sea la toma de decisión de ámbito personal o social.