Chemists’ knowledge object. Formulation, modification and abandonment of iconic model

This article presents an analysis of different perspectives in regards to chemistry scientific statute. The category of scientific model was considered to characterize the proposal and development of technological-iconic model. It was necessary to have a look at the time in which the introduction of analogical and symbolic models was indispensable to modify the initial model. It also established the way in which the technological-iconic model can be a didactic foundation to lead secondary students towards Chemistry as one of the natural sciences

Teach and learn about the nature of science through the analysis of history controversies: results and conclusions of a didactic research project

Este escrito presenta una reseña del libro escrito por los investigadores José Antonio Acevedo-Díaz, Antonio García-Carmona y María del Mar Aragón-Méndez, titulado Enseñar y aprender sobre naturaleza de la ciencia mediante el análisis de controversias de historia.This article presents a review of the book written by the researchers José Antonio Acevedo-Díaz, Antonio García-Carmona and María del Mar Aragón-Méndez, entitled Teach and learn about the nature of science through the analysis of history controversies

Control and autonomy of online audiences: Control y autonomía del público en línea

Based on technological advances and changes in the way people communicate, the task of controlling audiences has become difficult, as these prosumers consume and produce content autonomously, resulting in networking fans who through transmedia narratives disseminate content that brands take advantage of to create community; and from these communities, consumption becomes a networked practice. This brief discusses how, based on emotional marketing, and the use of content marketing the task of building these communities is more efficient

Epistolario de Leopoldo Balbás a Antonio Gallego Burín

Epistolario de Leopoldo Balbás a Antonio Gallego Burí

The problem of recontextualization in the didactic transposition

En este trabajo los autores hacen un análisis fundado en la historia social y en la historia de cada una de las ciencias de la naturaleza, de la transposición didáctica de los modelos científicos que los transforma en modelos didácticos y por tanto en ciencia escolar. Esa transposición didáctica se suele expresar en los contenidos de los textos de enseñanza que los respectivos autores organizan y que los profesores recomiendan a los estudiantes. Es en este proceso en el que emerge para los investigadores el problema de la recontextualización histórico-epistemológica, social y cultural al que en este artículo se trabaja.In this paper, the authors present an analysis of the didactic transposition of scientific models to didactic based on the social history of each one of the natural sciences. The didactic transposition is often expressed in the contents organized by different authors in the textbooks for teaching and in the suggestions that teachers make to their students. This article refers to the process in which the problem of historical epistemological social and cultural recontextualization arises.peerReviewe

Technological complexity: a tool for understanding the behaviour of consumers of high value-added foodstuffs

This article proposes and develops the concept of technological complexity (TC) as a useful and simple tool for grouping key attributes that give added value to a product. In addition, it reports an empirical application of this concept to two different food products (cured ham and cured sausage). The authors used a mixed-effects multi-nomial logistic regression model and show that in the cured pork product agribusiness, a low frequency of consumption favours the acceptance of high TC products. The results also confirm that marketing high TC products in stores with a large assortment decreases the chances of success for agribusiness companies that produce cured pork food products. These finding can be used by the managers for designing complementary attributes that improve their product portfolio. Besides, advertising expenditures associated with introducing new products could be reduced if companies strengthened their presence in specialty stores

Pre-service teachers’ perceptions of data protection in primary education

The protection of personal data and privacy are important issues closely related to use of social media, information and communication technologies, and the Internet in the area of education. The treatment of academic information and use of tools and programs for instruction, communication, and learning have revealed the handling of a significant volume of personal data from different sources. It is essential to protect this information from possible privacy violations. This descriptive study, which is of transversal nonexperimental design, focuses on how 384 pre-service teachers’ enrolled in educational technology courses in their education programs view the protection of personal data. The goals are to describe and analyze how these teachers perceive the risks associated with protection of data on the Internet and what they know about protection of data in primary education. We administered a questionnaire within the framework of an educational activity that focused on digital competence in data protection in education. The results show a high perception of risk in topics such as accepting cookies when surfing the Internet or transferring banking information. The knowledge the students claim to have shown a lack of information on the protection of minors’ data in issues related to the development and schooling of primary school students, as well as their health, background, and family environment. Curricular treatment of these areas that includes content, practices on regulations, and adopts a situated, critical, and responsible approach in pre-service teacher education is recommended.Spanish Ministry of Education & Vocational Training (Reference: FPU17/05164

The development of student self-efficacy through modeling strategies for writing skills

59 Páginas.El escaso desarrollo de la competencia escritural y la baja motivación hacia la misma han sido las dificultades más persistentes en los estudiantes de inglés como lengua extrajera tanto en la educación pública como privada. Este estudio pretende implementar estrategias de elaboración de modelos que fortalezcan las habilidades escriturales con el fin de disminuir el temor que enfrentan los estudiantes durante el proceso de escribir. Este proyecto de investigación basada en la acción colaborativa involucra a veinte estudiantes y a dos investigadores docentes activos en la actividad profesoral que pretenden disminuir las dificultades presentadas y mejorar las estrategias de escritura de los estudiantes. Los principios teóricos que sustentan el estudio incluyen los procesos de aprendizaje autónomo y cooperativo en un colegio público y uno privado y está enmarcado en un método cualitativo de investigación- acción colaborativa, en donde se siguen los pasos de planteamiento de una pregunta, planeación e implementación de la intervención, observación y reflexión en el proceso investigativo. Los resultados fueron obtenidos a través de la aplicación de diferentes instrumentos tales como: cuestionarios, entrevistas semi-estructuradas, observaciones recopiladas en diarios de campo y actividades de escritura