Natalia Jimenez-Tenorio

Natalia Jimenez-Tenorio
Universidad de Cádiz | UCA · Departamento de Didáctica

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46
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Publications

Publications (46)
Article
En este trabajo se caracteriza y evalúa una secuencia de enseñanza aprendizaje orientada al estudio de la Naturaleza de la Ciencia (NdC) en profesores de secundaria en formación, la cual se ha implementado en el Máster en Educación Secundaria de la Universidad de Cádiz en las especialidades de Física y Química y Biología y Geología. El diseño de la...
Article
Full-text available
In this study, we analyzed the descriptive knowledge and mental models of the phenomenon of tides manifested by 111 preservice primary teachers. The instrument employed is an open-ended questionnaire, analyzed by means of an approach that explores the descriptions, explanations, and predictions in respect of this phenomenon by our subjects. First,...
Article
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Enseñar ciencias desde una visión constructivista implica atender las concepciones previas de quien aprende. En este sentido, en el presente trabajo se analizan las concep-ciones que mantienen estudiantes de los Grados en Educación Primaria e Infantil sobre tres aspectos: la imagen de la ciencia, su aprendizaje y su enseñanza. Para explorarlas se u...
Article
Se presenta una secuencia didáctica diseñada para facilitar la comprensión del fenómeno de las mareas e involucrar a los participantes en procesos de modelización. Esto implica la construcción, revisión y reconstrucción de modelos, así como la reflexión en torno a su naturaleza y su papel en la enseñanza de la ciencia. El objetivo de este artículo...
Article
La argumentación en ciencias es una competencia que se debería trabajar de manera explícita y con mayor profundidad en los procesos de enseñanza-aprendizaje de las ciencias. El propósito de este trabajo es evaluar la calidad de los argumentos que presentan futuros maestros de primaria en una actividad de debate sociocientífico, en la fase inicial d...
Article
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Se presenta una investigación sobre las experiencias de aprendizaje de las ciencias de los maestros/as en formación inicial de dos universidades españolas. Se recogieron 263 relatos de vida entre estudiantes de Grado en Educación Infantil y Primaria -a partes iguales en que narraban sus vivencias en las etapas de Infantil, Primaria y Secundaria, y...
Article
En este artículo se analizan, en primer lugar, algunas de las principales bases teóricas sobre las que se sustentan los enfoques de enseñanza de las ciencias centrados en los modelos, desde tres planos distintos: el epistemológico, el cognitivo y el didáctico. A partir de dichas bases, se caracterizan, en segundo lugar, los enfoques de enseñanza me...
Article
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This paper presents, first a different characteristic elements based on the approach of educational modelling throughout a bibliography review. Secondly, a didactic proposal consisting of a total of 29 activities was analyzed. This proposal was proposed for the study of Sun and Earth but specially in the seasons phenomenon, with teachers in startin...
Article
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We present the results obtained in the evaluation of the students after the development of an interdisciplinary teaching innovation proposal at the University of Cádiz. This focused on the teaching-learning process of working with projects applied as content and strategy. The present study has involved 123 students. Two factors of the innovation pr...
Article
Full-text available
Este trabajo forma parte de un estudio más general destinado a elaborar, validar y emplear como instrumento de evaluación un cuestionario en torno a la comprensión de la naturaleza de los modelos en alumnado y profesorado. El cuestionario contempla cinco dimensiones: modelos como representaciones múltiples, modelos no cómo réplicas exactas, en qué...
Article
Full-text available
En el presente artículo se desarrolla y analiza una experiencia educativa en torno a una serie de talleres de ciencias realizados por los estudiantes del Grado de Maestro/a en Educación Infantil, con el objetivo de acercar y despertar el interés hacia la ciencia a niños y niñas de 3, 4 y 5 años de un centro escolar. Los talleres se conciben como el...
Article
In this paper the opinions of 169 students of the Degree of Primary Education, about the usefulness of various analogic models used in their training in the phenomenon of the seasons, has been investigated. With this purpose, a test was used in order to evaluate the perceptions of the participants just to finalize a curricular unit on that topic th...
Article
Full-text available
Se analiza la din?mica de reflexi?n propiciada en grupos de futuros profesores de Ciencias de la Naturaleza de educaci?n secundaria en un contexto de formaci?n inicial, durante el an?lisis de secuencias did?cticas representativas de distintas tendencias de ense?anza de las ciencias. Las secuencias fueron dise?adas por los formadores para ilustrar e...
Article
In this article the dynamics of reflection brought about in groups of future secondary education teachers of Natural Sciences in the context of initial training is analysed. These students discussed didactic sequences representing different trends in science education. The sequences were designed by the professor to illustrate strategies such as "d...
Article
The capture and storage of CO2 in sub-seabed geological formations has been proposed as one of the potential options to decrease atmospheric CO2 concentrations in order to mitigate the abrupt and irreversible consequences of climate change. However, it is possible that CO2 leakages could occur during the injection and sequestration procedure, with...
Article
Full-text available
Se fundamenta y describe una actividad orientada a la formaci?n inicial de profesores de secundaria de especialidades de ciencias experimentales. La actividad est? planteada como intento de aproximaci?n al estudio de distintas estrategias did?cticas, m?s o menos insertas dentro del marco socio-constructivista: ?aprendizaje por descubrimiento?, ?cam...
Article
An activity geared towards the initial training of secondary school teachers specializing in experimental sciences is described in this paper. The activity is conceived as an attempt to approach the study of different didactical strategies of a constructivist frame which included a number of case studies, four in all: "discovery learning", "concept...
Article
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This paper explores the role played by analogies as students’ knowledge of science matters progresses. First, it studies how they influence the evolution of students’ explanatory models as an instrument for helping them comprehend the world. Secondly, it analyses the varying complexity of analogies in accordance with the kind of comparisons in ques...
Article
The urgent need to minimise the potential harm deriving from global climate change and ocean acidification has led governmental decision-makers and scientists to explore and study new strategies for reducing the levels of anthropogenic CO2. One of the mitigation measures proposed for reducing the concentration of atmospheric CO2 is the capture and...
Conference Paper
Full-text available
Resumen: En esta comunicación presentamos una propuesta de trabajo conjunto en la docencia de las cuatro asignaturas de las didácticas específicas del tercer curso del Grado de Maestro de Educación Infantil en la Universidad de Cádiz. El diseño se fundamenta en el trabajo en equipo y, en consonancia, incorpora el aprendizaje cooperativo como estrat...
Conference Paper
Full-text available
RESUMEN En este trabajo se expone cómo se evaluó la competencia en el trabajo de equipo a través de un instrumento de coevaluación/autoevaluación elaborado por el profesorado implicado en una propuesta coordinada para el 3º curso del Grado de Maestro en Educación Infantil (curso académico 2012/13). Los principales resultados indican que la mayoría...
Article
El propósito del presente artículo es utilizar la fotografía como herramienta didáctica que propicie el análisis y reflexión hacia actitudes, destrezas y nociones medioambientales en la etapa de infantil. Para ello elaboramos una propuesta didáctica en base a la estrategia de resolución de problemas socioambientales; utilizamos la deforestación com...
Article
Full-text available
The biology, growth and reproduction of the axillary seabream, Pagellus acarne, was studied based on data obtained from the catches of the Andalusia commercial fleet operating off the coasts of southern Spain from October 2003 to September 2004. The axillary seabream had a very wide depth distribution, appearing from the surface down to 500 m depth...
Article
More and more, the coastal regions of the world suffer from the contamination of petroleum hydrocarbon [principally polycyclic aromatic hydrocarbons (PAHs)]. This contamination can be acute, as it happened in the Coast of Galicia (NW, Spain) by the oil spill from a tanker, or chronic by the existence of high maritime traffic and a lot of industries...
Article
The toxicity produced by fuel pollutants was evaluated through bioassays using the Senegalese sole Solea senegalensis. Juveniles were exposed for 21 days to different dilutions obtained by mixing fuel extracted from the Prestige oil tanker and sediment from a clean area of Cadiz Bay. After the exposure period, three biomarkers were analyzed (7-etho...
Article
The degree of contamination and toxicity in sediment from four Spanish ports (Cádiz, Huelva, Pasajes and Bilbao) was assessed in the present study. Two marine invertebrate species, the shore crab Carcinus maenas and the clam Ruditapes philippinarum, were exposed to the different sediments under laboratory conditions for 28 days. Relationships were...
Article
A chronic bioassay was carried out under laboratory conditions using juvenile Solea senegalensis to determine the toxicity of contaminants from an oil spill(Prestige). Also, the repair processes in fish affected by contaminants due to oil exposure were evaluated. Over 30 days individuals were exposed to clean sediment (control) and to sediment cont...
Article
The toxicity produced by fuel pollutants was evaluated through bioassays using the Senegalese sole Solea senegalensis. Juveniles were exposed for 21 days to different dilutions obtained by mixing fuel extracted from the Prestige oil tanker and sediment from a clean area of Cádiz Bay. After the exposure period, three biomarkers were analyzed (7-etho...
Article
The toxicity produced by fuel pollutants was evaluated through bioassays using the Senegalese sole Solea senegalensis. Juveniles were exposed for 21 days to different dilutions obtained by mixing fuel extracted from the Prestige oil tanker and sediment from a clean area of Cádiz Bay. After the exposure period, three biomarkers were analyzed (7-etho...
Article
Sediments in the National Park of the Atlantic Islands (Galicia, Spain) were affected by the spill of the tanker Prestige (November, 2002) and still present high levels of Polycyclic aromatic hydrocarbons. The adverse effects associated with the contaminants in sediments were tested using a chronic bioassay, exposing juveniles of the fish Sparus au...
Article
Sediment quality assessments for regulatory purposes (i.e. dredged material disposal) are characterized by linking chemical and acute ecotoxicological data. The design of chronic bioassays that incorporate more sensible endpoints than acute tests is discussed to address sediment quality for environmental quality assessment and regulatory proposes....
Article
Full-text available
In November 2002, the oil spill from the tanker Prestige in the Galician Coast caused an ecological catastrophe in Spain. The adverse effects associated with the contaminants bound to sediments were tested using juveniles of the fish Sparus aurata (seabream). The approach evaluates sediment quality by using an integrated assessment including chemic...
Chapter
The use of the histopathological alterations as a biomarker of effect in marine invertebrates has been widely included in the assessment of the quality of the marine environment. This biomarker may link the bioavailability of different compounds with the effect at target tissues and it has been successfully included in major national monitoring pro...
Article
The bioaccumulation of six metals (Fe, Mn, Zn, Cd, Pb and Cu) was studied as part of the monitoring of the Aznalcóllar mining spill (April 1998) on the Guadalquivir estuary and in other estuaries located in the Gulf of Cádiz. Fish, clams and oysters were collected during different seasonal periods along the years 2000 and 2001 in the Guadalquivir e...
Article
The relationship between bioaccumulation of heavy metals (Zn, Cd, Pb and Cu) and histological lesions in different tissues of organisms is assessed in three different areas located in the southwest of Spain in the Gulf of Cádiz (Ría of Huelva, Guadalquivir estuary and Bay of Cádiz) affected and non-affected by mining activities. Data included in th...
Chapter
 ML. Martín-Díaz, C. Morales-Caselles, N. Jiménez-Tenorio, I. Riba, TA. DelValls. Biomarkers and Bioaccumulation; Two Lines of Evidences to Assess Sediment Quality. Entry Code: WQ-3 The Wiley Water Encyclopedia. .
Article
Full-text available
In this paper we report the first complete mapping of the pituitary in a tuna species. The various different adenohypophysis cell types of the bluefin tuna, Thunnus thynnus L. have been identified and located using different antisera against mammalian and piscine hormones and various histochemical techniques: PAS, Alcian Blue pH 2.5 and lectins -Co...

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