Coteaching with senior students – a way to refine teachers’ PCK for teaching chemical bonding in upper secondary school

During the last decade there has been on-going discussions about students’ declining interest and low achievement in science. One of the reasons suggested for this decline is that teachers and students have different frames of reference, whereby teachers sometimes communicate science in the classroom in a way that is not accessible to the students. There is a lack of research investigating the effects of coteaching with senior students in science in upper secondary schools. To improve teaching and to narrow the gap between teachers’ and students’ different frames of references, this study investigates how an experienced chemistry teacher gains and refines her pedagogical content knowledge (PCK) by cooperating with two grade 12 students (age 18) as coteachers. The teacher and the two coteachers coplanned, cotaught and coevaluated lessons in chemical bonding in a grade 10 upper secondary class. Findings indicate that the coteachers contributed with their own learning experiences to help the teacher understand how students perceive difficult concepts. In such way, the coteachers were mediating between the teacher and the students, thus bridging the gap between the teacher and the students’ frames of references. The teachers’ PCK was refined which in turn lead to improved teaching strategies.     

(Un)becoming dysfunctional: ADHD and how matter comes to matter

Various neuropsychiatric disorders are a common feature today, not least in educational contexts where Attention Deficit Hyperactivity Disorder (ADHD) is a common diagnosis. The dominant perspective regarding ADHD is biomedical. This perspective has been questioned and challenged in various ways. The aim of this article is to think ADHD through quantum physicist and philosopher Karen Barad’s [Barad, K. 2007. Meeting the Universe Halfway: Quantum Physics and the Entanglement of Matter and Meaning. Durham, NC: Duke University Press.] theory of agential realism. According to Barad, what we perceive as singular entities do not exist in advance. Barad pays attention to the world’s entanglements, and what we perceive as singular objects and subjects are effects of specific and various material-discursive practices acting as agential cuts. The theory of agential realism assigns performativity to matter, which highlights that ADHD is something that continuously comes into being together with human and non-human bodies. The material dimension has not previously been emphasised as a causal factor in studies on ADHD. In this article, the focus is on the agency of the book. As a conclusion, the importance of taking responsibility for every material-discursive practice with which we are always entangled is emphasised.     

The inadequacy of ADHD: a philosophical contribution

Attention Deficit Hyperactivity Disorder (ADHD) is a widely spread diagnosis. The dominant paradigm of ADHD is biomedical where ADHD is defined as a brain disorder. At the same time, the legitimacy of the diagnosis is being questioned since it is unclear whether or not ADHD can be deemed a medical disorder in itself. The aim of this article is to critically assess the merits of understanding the diagnosis of ADHD as a medical condition defined as a brain disorder. This is being done using the seventeenth century philosopher Benedict Spinoza’s (1632–1677) notions of adequate and inadequate knowledge and his counterintuitive theory of mental health. Doing so it becomes clear that ADHD, however adequate it may seem, is founded on inadequate knowledge and that the legitimacy of the individual diagnosis should therefore be questioned on the grounds that on a long term scale it is passivizing and stigmatizing rather that liberating.     

Arctic sea ice and the communication of climate change

Media play a major role in framing key political issues such as climate change, and the melting of the Arctic snow and ice has become a bellwether of global climate change through the mediations of the region and its wildlife. While Arctic change has scientific significance for understanding global warming, it also plays a key role in the popular communication of global climate change and its impacts. This article addresses questions such as how the Arctic and its sea ice have become become powerful images of climate change, and what roles scientific activities, technologies, and networks play in relation to media and mediation. Drawing upon earlier research on the role of the media and framing in relation to climate change in general and upon Arctic climate change in particular, we explore how media framings are linked with various dynamics such as scientific practice and the institutional structure of the media system.     

A new device for evaluating distance and directional performance of golf putters

The purpose of this study was to construct and evaluate the reliability of an apparatus for testing golf putters with respect to distance and direction deviation at different impact points on the clubface. An apparatus was constructed based on the pendulum principle that allowed putter golf clubs to swing at different speeds. The mean speed of the club head before ball impact, and of the ball after impact, was calculated from time measurements with photocells. A pin profile rig was used to determine the directional deviation of the golf ball. Three different putters were used in the study, two that are commercially available (toe-heel weighted and mallet types) and one specially made (wing-type) putter. The points of impact were the sweet spot (as indicated by the manufacturer's aim line), and 1, 2 and 3 cm to the left and right of the sweet spot. Calculation of club head speed before impact, and of ball speed after impact (proportional to distance), showed errors < or = 0.5% of interval duration. The variability in ball impacts was tested by measuring time and direction deviations during 50 impacts on the same ball. The mean duration (+/- s) after ball impact in the test interval (1.16 m long) was 206 (0.8) ms and the standard deviation in the perpendicular spreading of the balls in relation to the direction of the test interval was 0.005 m. A test-retest of one putter on two consecutive days after remounting of the putter on the test apparatus showed less than 1% difference in distance deviation. We conclude that the test apparatus enables a precise recording of distance and direction deviation in golf putters as well as comparisons between different putters. The apparatus and set-up can be used in the laboratory as well as outdoors on the putting green.     

Schooling of immigrant children in West-Germany — Sweden — England: The educationally disadvantaged

The focus of this article is on children of migrant workers and immigrants in the schools of West-Germany, Sweden and England. One central problem, that of language, is considered both as it is dealt with in policy, i.e., in curricula, and as it is actually implemented in some programmes, which are typical for the actions in these countries. The three countries that are compared have similar proportions of immigrant children but these children differ in nationality. The analysis is based on the concept that children of immigrants belong to the disadvantaged people in our societies, which include not only immigrants but people with whatever kind of deprivation. Some demographical data are given as background information and underline the urgency of action.

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Zusammenfassung Dieser Artikel behandelt die Kinder von Gastarbeitern und Einwanderern in den Schulen Westdeutschlands, Schwedens und Englands. Ein zentrales Problem, das der Sprache, wird einmal im politischen, d.h. Curriculums-Aspekt, betrachtet, zum anderen so, wie es in einigen Programmen verwirklicht wurde, die für die Aktionen in diesen Ländern typisch sind. Die drei verglichenen Länder haben ähnliche Anteile an Einwandererkindern; diese Kinder haben jedoch verschiedene Nationalitäten. Die Analyse beruht auf dem Konzept, dass Einwandererkinder zu den benachteiligten Gruppen unserer Gesellschaft gehören; diese schliessen nicht nur Einwanderer, sondern alle Arten von Benachteiligten ein. Demographische Angaben als Hintergrund unterstreichen die Notwendigkeit des sofortigen Handelns.

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Résumé Cet article se concentre sur les enfants des travailleurs migrants et des immigrants dans les écoles d'Allemagne occidentale, de Suède et d'Angleterre. Un problème essentiel, le problème linguistique, est considéré à la fois comme on l'aborde p.ex. dans la politique, dans les curricula, et aussi comme il est vétitablement appliqué dans certains programmes qui sont typiques pour les actions de ces pays. Les trois pays que l'on compare ici ont des proportions similaires d'enfants immigrants, mais ces enfants sont de nationalité différente. L'analyse se base sur le concept d'après lequel les enfants d'immigrants font partie des défavorisés de notre société, qui ne comprend pas seulement des immigrants, mais aussi les personnes affectées par toutes sortes de privations. Des données démographiques sont aussi mentionnées comme renseignements de base, et elles soulignent l'urgence d'une action à prendre.

     

Reading Skill and the Processing of Text Structure

Backman, J., Lundberg, I., Nilsson, L.‐G. & Ohlsson, K. 1984. Reading Skill and the Processing of Text Structure. Scandinavian Journal of Educational Research 29, 113‐128. Oral reading speed, free recall and summarization of narrative stories presented on videotex were studied as a function of reading skill, text structure and physical factors such as paragraphing and color cueing of clauses on various levels of importance. A total of 144 subjects (13‐14 years old) participated in the experiment, half of them being rated as poor readers and half as good readers. Good readers outperformed poor readers on all dependent variables. Important propositions were better recalled and were more often included in summaries than less important parts of the texts, especially if they were signalled by a different color. However, the impact of graphical cueing depended on reading skill, text type and task. The interactions were discussed in terms of differences in processing strategies and prior knowledge.     

Analyzing effective communication in mathematics group work: The role of visual mediators and technical terms

Analyzing and designing productive group work and effective communication constitute ongoing research interests in mathematics education. In this article we contribute to this research by using and developing a newly introduced analytical approach for examining effective communication within group work in mathematics education. By using data from 12 to 13-year old students playing a dice game as well as from a group of university students working with a proof by induction, the article shows how the link between visual mediators and technical terms is crucial in students’ attempts to communicate effectively. The critical evaluation of visual mediators and technical terms, and of links between them, is useful for researchers interested in analyzing effective communication and designing environments providing opportunities for students to learn mathematics.