RT Journal Article T1 What knowledge do science teachers need to teach the ecosystem concept using a river? Didactic implications to promote good practices in secondary school A1 Illescas Navarro, Mireia A1 González-Castanedo, Yolanda A1 Heras Pérez, María Ángeles de las A1 Climent Rodríguez, Nuria A1 González Castanedo, Yolanda A1 Heras Pérez, María Ángeles de las A1 Climent Rodríguez, Nuria K1 knowledge, teacher education, ecosystem, secondary education AB Teacher knowledge is vital to provide meaningful learning opportunities. In this case study, a secondary education teacher’s knowledge about how to teach the concept of ecosystems from a river is explored. A category system drawn from the literature about science teacher knowledge was used for the analysis. Science teaching requires teachers to have content and pedagogical content knowledge. The identification of these knowledge elements and their relationships has allowed to draw didactic implications so as to improve science teacher training. SN 2301-251X (Online) YR 2025 FD 2025-01 LK https://hdl.handle.net/10272/27650 UL https://hdl.handle.net/10272/27650 LA eng NO Illescas-Navarro, M., González-Castanedo, Y., de las Heras Pérez, MA., & Climent Rodríguez, N. (2025). What knowledge do science teachers need to teach the ecosystem concept using a river? Didactic implications to promote good practices in secondary school. European Journal of Science and Mathematics Education, 13(1), 27-40. https://doi.org/10.30935/scimath/15873 NO This study is part of the project “Conocimiento especializado en la formación del profesorado de matemáticas, ciencias experimentales y ciencias sociales [Specialized knowledge in the training of teachers of mathematics, experimental sciences and social sciences] (MTSK-STSK-SCTSK)” (ProyExcel_00297) of the Junta de Andalucía’s call for R&D+i grant applications by universities and public research organizations 2021 and is carried out under the auspices of the research group DESYM (HUM 168), the research center COIDESO and Ibero-American Network of the MTSK Model, under the auspices of Ibero-American University Association of Postgraduate Studies (AUIP) DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026