(Re)defining the concept of life in elementary education through astrobiology
DOI:
https://doi.org/10.15536/reducarmais.10.2026.4399Keywords:
Science education, Alternative conceptions, Biological criteria for life, Meaningful learningAbstract
This study aimed to analyze how 9th-grade students redefine the concept of life based on the analysis of a lesson from a didactic sequence grounded in astrobiology. The lesson was designed as a mediation strategy to promote the problematization of the concept of life and to stimulate processes of conceptual reconstruction. The research, of a qualitative nature and with a pre-experimental single-group design, was conducted in a public school in Rio Grande do Sul with 21 students. Data were collected through pre- and post-tests, collective mind maps, and the teacher-researcher’s field diary, and analyzed using Content Analysis. The central activity involved the classification and justification of borderline entities (virus, AI robot, fire, embryo) as living or non-living. Initially, intuitive and anthropocentric criteria prevailed, with difficulties in using scientific references. After the intervention, there was greater use of formal biological criteria, although epistemological obstacles such as the natural/artificial dichotomy persisted. The findings reinforce the potential of astrobiology as a context to challenge intuitive conceptions and foster the construction of scientific criteria in science education.
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