Atomic and Radioactive: a learning situation on radioactivity, its applications, and controversies

Abstract

The LOMLOE has brought about a new curricular reform in compulsory education in Spain, emphasizing a fully competency-based approach and the imperative to engage in learning situations (SdA) as classroom work scenarios. The gradual construction of students' profiles at the end of each educational stage is a notable outcome. This research aims to significantly contribute, from the perspective of didactics in experimental sciences, to guide Physics and Chemistry teachers in designing these SdA. It also aims to underscore the most suitable methodologies for teaching and learning sciences. Employing a case study design, this work systematically integrates curricular elements into the development of a SdA. A step-by-step description of its application is provided, contextualized with an example focused on radioactivity, its applications, and controversies. Following its partial implementation in a real-world setting with 66 3rd ESO students during the 2022-23 academic year, the study concludes by highlighting its positive impact on the scientific literacy of the participating students. This research serves as a valuable resource for educators seeking effective strategies in adapting to the educational changes introduced by LOMLOE.