This article is a review about the effectiveness of practicals in science education at the secondary and tertiary levels. Through more than one hundred references, the authors conclude solid arguments have not been provided to justify the great deal of material and human resources needed for the implementation of this educational tool. In spite of these disappointing findings, the authors do not deny the central role of practicals in science education, and they justify these negative results by invoking the great complexity of the subject, the ambiguity that surrounds the term «practicals», and an unsuitable methodology that researchers use to measure their effectiveness. Finally, some plausible solutions to the problem are suggested, such as the characterisation of the educational objectives of practicals, or the use of a qualitative evaluation methodology.
<span>El presente estudio reúne sintéticamente las principales consideraciones del trabajo realizado en torno a la infraestructura verde y su papel en el desarrollo regional. El objetivo de la investigación fue definir los conceptos básicos de partida e identificar las iniciativas sobre la infraestructura verde, como elemento clave en la definición de un modelo territorial sustentable a nivel regional, aplicándolo a la ciudad de Resistencia, ciudad capital y cabecera del AMGR. Se realiza una propuesta para los ejes verdes con funciones recreativas y culturales como elementos integrantes de la infraestructura verde del área en estudio.</span>
<p>Este artículo forma parte de los resultados parciales de la tesis doctoral “La ordenación de espacios metropolitanos. Transformaciones socio-territoriales del eje Gran Resistencia-Gran Corrientes, Argentina”. El mismo propone una reflexión sobre la situación actual de las ciudades intermedias de Resistencia y Corrientes y sus áreas de influencia, que permita avanzar en la caracterización del área, con miras a impulsar un mejor aprovechamiento de los recursos disponibles, generar oportunidades de desarrollo, sin perjudicar a las generaciones futuras y elevar la calidad de vida de las personas.</p>
The object of this article is to discuss the relevance of the use of microcomputers in science teaching. The authors consider that using microcomputers in order to let students get familiar with the methodological changes they have caused in contemporary scientific -technical activity, could produce radical transformations in science teaching.
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