This paper describes a research project into heritage education. Taking an interdisciplinary perspective from within the field of Experimental and Social Science Education, it presents an analysis of teachers' and administrators' conceptions of heritage, its teaching and its dissemination in Spain. A statistical description is provided of the results of a questionnaire. A factor analysis (FA) was applied to explore possible conjectures accounting for the correlations between the variables with respect to both the conceptualisation of heritage and its teaching and dissemination. The results emphasise the relevance of academic background, initial training and professional context with regard to the conceptualisations of heritage held by the different groups.

Teachers’ development can be seen as a dialog between their reflective thinking and their actions, with an added gradient of complexity from their social interactions. All of these elements are conjugated within their classroom practice, with their Pedagogical Content Knowledge (PCK) as theoretical background. This paper analyzes the case of a secondary education science teacher’s development over different periods, with a focus on classroom atmosphere, social organization and problem-based interactions, the influence of the topic being taught, and the teacher’s participation in an Action-Research group. The sources of information included the teacher’s diaries, questionnaires, interviews, ethnographic records, and extracts from videotaped sessions of her lessons. The data analysis for the areas of reflection and of action was approached with methodological plurality. Although these two fields of study (reflection and action) share essential aspects, they presented subtle differences, with reflection being more fully developed than action in the classroom, and the contribution of the Action-Research group to the teacher’s development was important, but less so than her professional command of the content. Two underlying obstacles deeply rooted in the teacher’s thinking and actions impregnate her classroom interactions: classroom competitiveness, and the use of excessively rigid activities.

Se aborda un estudio de caso de una profesora de Enseñanza Secundaria de ciencias experimentales a lo largo del tiempo en diferentes periodos. El ámbito de estudio se centra en el aprendizaje escolar y los obstáculos en el proceso de enseñanza-aprendizaje. Se desarrolla en tres fases diferentes y parte de una visión compleja del conocimiento profesional, relacionada con la innovación escolar y el tipo de contenido que se implementa: disoluciones y formación del suelo. Los resultados muestran un desarrollo de la profesora asociado a la fortaleza de los conocimientos previos del tópico, pero limitada por la dificultad de asumir plenas posiciones constructivistas respecto al aprendizaje del alumnado y la forma de indagar colectivamente en el aula las dificultades de aprendizaje. Se establecen algunas implicaciones en relación con la formación inicial del profesorado.