Physics Education in Science Training of Primary School Teachers

Our experience in physics training of primary school teachers is briefly presented together with a project we prepared for the teaching of science in primary school. We suggest for training teachers a practicum‐based strategy which requires that they initially carry out experimental activities designed for their pupils and express their ideas and needs. Usually they meet difficulties similar to those revealed by children and ask to explore in more detail the topics tackled in the laboratory activity. The aim of the proposed approach is to help teachers understand basic physics concepts and realise the importance of taking into account the pupils’ conceptions in the teaching process.     

A Three‐Dimensional Approach and Open Source Structure for the Design and Experimentation of Teaching‐Learning Sequences: The case of friction

We have developed a teaching‐learning sequence (TLS) on friction based on a preliminary study involving three dimensions: an analysis of didactic research on the topic, an overview of usual approaches, and a critical analysis of the subject, considered also in its historical development. We found that mostly the usual presentations do not take into account the complexity of friction as it emerges from scientific research, may reinforce some inaccurate students’ conceptions, and favour a limited vision of friction phenomena. The TLS we propose begins by considering a wide range of friction phenomena to favour an initial motivation and a broader view of the topic and then develops a path of interrelated observations, experiments, and theoretical aspects. It proposes the use of structural models, involving visual representations and stimulating intuition, aimed at helping students build mental models of friction mechanisms. To facilitate the reproducibility in school contexts, the sequence is designed as an open source structure, with a core of contents, conceptual correlations and methodological choices, and a cloud of elements that can be re‐designed by teachers. The sequence has been tested in teacher education and in upper secondary school, and has shown positive results in overcoming student difficulties and stimulating richer reasoning based on the structural models we suggested. The proposed path has modified the teachers’ view of the topic, producing a motivation to change their traditional presentations. The open structure of the sequence has facilitated its implementation by teachers in school in coherence with the rationale of the proposal.     

The effect of technological knowledge assets on performance: The innovative choice in Spanish firms

The aim of this article is to examine the relationship between Technological Knowledge Assets (TKAs) and performance, in the light of making the ‘innovative choice’ that involves short-term costs of acquiring or generating the assets but aims at longer term benefits through innovation. To that end, a study of 1267 industrial firms in Spain was carried out over a period of 5 years, 1998-2002. The results show that TKAs have a positive indirect effect on financial performance mediated through innovation. They also reveal that TKAs have a negative direct effect on performance, except licences. Thus, the combined effect of TKAs on performance urges the need for innovation to obtain a positive payoff.     

Social Implications of the Opportunities for Romanian Higher Education in the New World Order∗

An overview is given of the course of development and the social role of higher education in Romania since the revolution of December 1989. The pros and cons of private higher education institutions are presented with the added note that the existence of these institutions saves money for the Romanian state and subsidizes the salaries of professors teaching in the state institutions. Suggestions are made as to how to improve the teaching/learning environment both for students and for teachers, and a plea is made that higher education in Romania, both public and private, avoid becoming overly market‐oriented. Rather, higher education should contribute to the remaking of civil society.

     

Effectiveness of Reading-Strategy Interventions in Whole Classrooms: a Meta-Analysis

Research has demonstrated that in controlled experiments in which small groups are being tutored by researchers, reading-strategy instruction is highly effective in fostering reading comprehension (Palincsar & Brown, Cognition and Instruction, 1(2), 117–175, 1984). It is unclear, however, whether reading-strategy interventions are equally effective in whole-classroom situations in which the teacher is the sole instructor for the whole class. This meta-analysis focuses on the effects of reading-strategy interventions in whole-classroom settings. Results of studies on the effectiveness of reading-strategy interventions in whole-classroom settings were summarized (N_studies?=?52, K?=?125) to determine the overall effects on reading comprehension and strategic ability. In addition, moderator effects of intervention, study, and student characteristics were explored. The analysis demonstrated a very small effect on reading comprehension (Cohen’s d?=?.186) for standardized tests and a small effect (Cohen’s d?=?.431) on researcher-developed reading comprehension tests. A medium overall effect was found for strategic ability (Cohen’s d?=?.786). Intervention effects tended to be lower for studies that did not control for the hierarchical structure of the data (i.e. multilevel analyses).For interventions in which “setting reading goals” was part of the reading-strategy package, effects tended to be larger. In addition, effects were larger for interventions in which the trainer was the researcher as opposed to teachers and effect sizes tended to be larger for studies conducted in grades 6–8. Implications of these findings for future research and educational practice are discussed.     

Understanding floating: A study of children aged between six and eight years

Graphs of real-time experiments are useful tools in science education; their intrinsic features allow innovative didactic approaches. The use of such images is spreading and is likely to become common classroom practice. This paper describes a study in which secondary school students were called upon to read and interpret documents containing images of real-time kinematics graphs specially designed to address common learning problems and to minimize iconic difficulties. Both novice students and those with a little experience of real-time experiments were involved. The overall didactic intentions of the presented documents were fulfilled. Some reading difficulties related to specific features were detected and are discussed. Suggestions are made regarding the acquisition of some specific capabilities that are needed to avoid misinterpreting these images and are of transversal value across several contexts. Finally, some implications for teacher training and class activities are discussed.