Psicología y Didáctica de las Ciencias de la naturaleza ¿concepciones alternativas?

Resumen

El presente trabajo analiza las aportaciones recientes de la Psicología y Didáctica de las Ciencias de la Naturaleza a la investigación del aprendizaje y la enseñanza de las Ciencias. Los puntos de partida y los intereses iniciales de ambas aportaciones son, sin duda, diferentes. Mientras la Psicología ha estado más centrada en los procesos generales del pensamiento científico, la Didáctica ha estudiado sobre todo las «concepciones alternativas» mantenidas por los alumnos en áreas específicas. Pero esta diferente perspectiva no ha impedido la existencia de datos y preocupaciones crecientemente comunes. Estos objetivos comunes estarían relacionados no sólo con los rasgos característicos de la «ciencia intuitiva» de los alumnos, enraizados en la naturaleza del conocimiento cotidiano estudiado por la psicología cognitiva, sino también con la naturaleza y los mecanismos del cambio conceptual, que debe vincularse a los contextos de uso del conocimiento científico, tanto escolares como cotidianos.     

An Analysis of High School Students' Performance on Five Integrated Science Process Skills

This study determined Jamaican high school students' level of performance on five integrated science process skills and if there were statistically significant differences in their performance linked to their gender, grade level, school location, school type, student type and socio-economic background (SEB). The 305 subjects comprised 133 males, 172 females, 146 ninth graders, 159 10th graders, 150 traditional and 155 comprehensive high school students, 164 students from the Reform of Secondary Education (ROSE) project and 141 non-ROSE students, 166 urban and 139 rural students and 110 students from a high SEB and 195 from a low SEB. Data were collected with the authors' constructed integrated science process skills test the results indicated that the subjects' mean score was low and unsatisfactory; their performance in decreasing order was: interpreting data, recording data, generalising, formulating hypotheses and identifying variables; there were statistically significant differences in their performance based on their grade level, school type, student type, and SEB in favour of the 10th graders, traditional high school students, ROSE students and students from a high SEB. There was a positive, statistically significant and fairly strong relationship between their performance and school type, but weak relationships among their student type, grade level and SEB and performance.     

Theory‐led confirmation bias and experimental persona

Questionnaire and interview findings from a survey of three Year 8 (ages 12–13 years) science practical lessons (n = 52) demonstrate how pupils' data collection and inference making were sometimes biased by desires to confirm a personal theory. A variety of behaviours are described where learners knowingly rejected anomalies, manipulated apparatus, invented results or carried out other improper operations to either collect data which they believed were scientifically correct, or achieve social conformity. It is proposed that confirmation bias was a consequence of the degree to which individuals were laden by theory, and driven by this, experimenters assumed one of three different personas: becoming right answer confirmers; good scientists; or indifferent spectators. These personas have parallels with historical instances of scientific behaviour. Implications of a continued teacher‐tolerance of pupil confirmation bias include the promotion of unscientific experimenting, and the persistence of unchallenged science misconceptions. Solutions are offered in the way of practical strategies that might reduce experimenters' theory‐ladeness.     

Making learning last: teachers’ long-term retention of improved nature of science conceptions and instructional rationales

ABSTRACT

Despite successful attempts to improve learners’ nature of science (NOS) conceptions through explicit, reflective approaches, retention of improved conceptions is rarely addressed in research. The issue of context for NOS instruction has implications for this retention. Whether to contextualise has been the question occupying science educators’ attention. We think this question is misplaced. Instead, we build upon recent research addressing a context continuum – drawing on the strengths of both contextualised and noncontextualised NOS instruction – to improve retention. Although there are many different potential contexts for NOS instruction, this investigation focuses on science content as context. The present investigation focused on long-term retention of improved NOS conceptions and rationales for NOS instruction. Participants were all 25 teachers who completed a professional development programme (PDP) utilising a mixed contextualisation approach to NOS instruction. We classified teachers’ NOS conceptions into three levels of understanding using the Views of the Nature of Science Form-C responses and interviews three times over the year: pre-, post-, and 10-month delayed post-PDP. Results indicated that initially participants held many alternative NOS conceptions. Post-instruction, responses were substantially improved across all NOS concepts. Furthermore, nearly all of the participants’ conceptions were retained across the academic year following the PDP. Participants offered varied rationales for NOS instruction including its potential to improve students’ scientific literacy, perceptions of the relevance of science, improve positive risk-taking, and increase tolerance for differences. These results contrast favourably with previous reports of the retention of improvements in NOS conceptions over time.     

The effects of explanation-driven inquiry on students’ conceptual understanding of redox

ABSTRACT

The study that is the subject of this paper tested the effects of EDI (explanation-driven inquiry) on students’ redox conceptual understanding and their misconceptions. Two classes of 119 10th grade high school students were involved. Two groups of students in the same school were chosen. One class that was taught by EDI teaching was set as the treatment group and another class that received conventional teaching was set as the control group. Students’ conceptual understanding was measured by a standardised instrument, and the students’ misconceptions were compared. The analysis of covariance showed that EDI teaching had significant effects on students’ redox conceptual understanding, and the results of the chi-square test demonstrated that students’ conceptual understanding level was improved by using EDI teaching. Also, after comparing the two groups of students’ misconceptions of redox, the results indicated that the students’ misconceptions changed toward deeper conceptual understanding in the treatment group that used EDI. Finally, some suggestions were made on how to implement EDI in the classroom.     

School performance and gender differences in suicidal behaviour – a 30-year follow-up of a Stockholm cohort born in 1953

Astonishingly little is known about the relationship between high educational achievements and suicidal behaviour among women. This is remarkable given that a woman breaking into traditionally male-dominant spheres is a well established example of social-role marginality. The current study combines fatal and non-fatal suicidal behaviour and analyses, by means of logistic regression, the degree to which high school performance during pre-adolescence in the mid-1960s, in Sweden, had a detrimental effect on suicidal behaviour for women, as opposed to men, in adolescence and young adulthood. The Stockholm birth cohort study was used for this purpose. The results show that girls with both above and below average marks had an elevated risk of engaging in suicidal behaviour. However, this relation only held for girls who had grown up with supportive parental ambitions in terms of educational commitment. For boys, only low school performance was shown to be suicidogenic, irrespective of parental ambitions.     

Telling stories digitally: an experiment with preschool children

With the emergence of the new technologies, twenty-first-century learning involves the application of new media in educational environments. Digital storytelling (DST) is a method that blends traditional storytelling with new technologies. This study was designed to compare the conceptual understanding of preschool students in DST classrooms with children in traditional storytelling classrooms. A pre-test, post-test control group design was used. Data were collected from 149 preschool children using pre- and post-test surveys and students’ drawings. The findings indicate that DST improved the preschoolers’ conceptual understanding of the course content more than traditional storytelling.     

Towards a learning progression of energy

This article presents an empirical study on an initial learning progression of energy, a concept of central importance to the understanding of science. Learning progressions have been suggested as one vehicle to support the systematic and successful teaching of core science concepts. Ideally, a learning progression will provide teachers with a framework to assess students' level of understanding of a core concept and to guide students towards a more sophisticated level of understanding. Taking existing research as a point of departure, developing a learning progression involves recurring cycles of empirical validation and theoretical refinement. In this article, we report about our efforts in working towards a learning progression of energy. First, we derived an initial learning progression by utilizing existing curriculum, research on students' understanding, and development of students' understanding of energy. Second, we used these sources of guidance to develop a robust measurement instrument, the Energy Concept Assessment (ECA), based on multiple choice questions. Third, we utilized this instrument to assess the understanding of N = 1,856 students from three different grade levels, Grades 6, 8, and 10. Findings provided evidence that students from Grade 6 mostly obtain an understanding of energy forms and energy sources. Students of Grade 8 additionally demonstrate an understanding of energy transfer and transformation, whereas only students of Grade 10, and then only some of these students, achieve a deeper understanding of energy conservation. We discuss the implications of our findings against the background of existing research on students understanding of energy. Finally, further steps in working towards a learning progression of energy are identified. Zusammenfassung: Der vorliegende Artikel beschreibt den ersten Schritt in der Entwicklung und Validierung einer Learning Progression für das Energiekonzept; einem Konzept, das zentral für die Entwicklung eines tiefergehenden Versta¨?ndnisses der Naturwissenschaften ist. Learning Progressions sollen das das systematische und erfolgreiche Unterrichten zentraler naturwissenschaftlicher Konzepte unterstützen. Idealerweise sollen Learning Progressions Lehrkräften eine Rahmen bieten, den Entwicklungsstand ihrer Schülerinnen und Schüler hinsichtlich des Verständnisses zentraler naturwissenschaftlicher Konzepte einzuschätzen und Unterricht so zu gestalten, dass er die Entwicklung eines elaborierten Verständnisses befördert. Die Entwicklung einer Learning Progression beginnt mit der theoretischen Begründung einer vorläufigen Learning Progression, gefolgt von iterativen Zyklen empirischer Validierung und Überarbeitung. In diesem Artikel berichten wir über unsere Arbeiten zur Entwicklung einer Learning Progression für das Energiekonzept. Im Rahmen dieser Arbeiten wurde zunächst ausgehend von vorliegenden Befunden zum Verständnis und der Entwicklung des Verständnisses von Energie eine vorläufige Learning Progression begründet. Im zweiten Schritt wurde auf Grundlage der Learning Progression ein entsprechendes Instrument auf Basis von Multiple‐Choice‐Aufgaben entwickelt – das Energy Concept Assessment (ECA). Im dritten und letzten Schritt wurde das Instrument eingesetzt, um das Verständnis von Energie bei N = 1856 Schülerinnen und Schülern der Jahrgänge 6, 8 und 10 zu erfassen. Die Ergebnisse unserer Untersuchung legen nahe, dass Schülerinnen und Schüler aus Jahrgang 6 im Wesentlichen über ein Verständnis von Energieformen und –quellen verfügen. Schülerinnen und Schüler aus Jahrgang 8 zeigen darüber hinaus ein Verständnis von Energieumwandlung und –transport. Ein Verständnis von Energieerhaltung ist nur von Schülerinnen und Schüler aus Jahrgang 10 und dann auch nur von einem Teil dieser Schülerinnen und Schüler zu erwarten. Vor dem Hintergrund dieser Ergebnisse und der bisherigen Forschung zum Energieverständnis, diskutiert der Artikel weitere Schritte für die die Entwicklung einer Learning Progression für das Energiekonzept. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 50:162–188, 2013     

浅析网络流行体中的戏拟

网络流行体中的戏拟包括单语码戏拟和多语码戏拟两种类型。单语码戏拟的网络流行体主要由“古典诗词拼盘“古典诗词＋台词”古典诗词十新创语句”三种形式构成;多语码戏拟的网络流行体则主要由“古典诗词＋英语语句”的形式构成。从认知语言学．的角度来看。网络流行体中戏拟的形成机制与概念整合有关,作者通过概念整合创作出新文本。受众解读时,则经历了从最大关联到最佳关联的过程。     

Action research in Singapore education: constraints and sustainability

Action research has received increasing attention, especially by school leaders, as a result of the Singapore Ministry of Education’s push for greater autonomy, diversity and innovation at the school level. It is also perceived as a means for teacher professional development and professionalism. The Teachers Network, which has its own brand of action research called ‘Learning Circles’, is in support of such a view. Action research projects are not, however, without problems. In this paper, structures that pose constraints to successful action research endeavours will be the main focus for discussion.