How novice physics students deal with explanations

An extensive study was conducted of students’ explanations written in response to ‘what if...?’ questions in elementary mechanics. The study showed that the structure of students’ explanations yields roughly the same ranking of students as do problem‐solving tests, but in addition provides a wealth of insights into (1) context dependence and categorization in students’ use of concepts, (2) the effect of misconceptions on context dependence, and (3) the types of explanations that students tend to produce. A follow‐up study, in which students were presented with pairs of pre‐written explanations to ‘what if...?’ questions and asked to indicate a preference, showed that students do not necessarily prefer the types of explanations they write, and have greater difficulty assessing the correctness of explanations that are counter to preference type. Evidence is presented that, for many students, the links between physics thinking and real‐world thinking are all too tenuous.     

Storylines in the physics teaching content of an upper secondary school classroom

ABSTRACT

Background: Physics is often seen as a discipline with difficult content, and one that is difficult to identify with. Socialisation processes at the upper secondary school level are of particular interest as these may be linked to the subsequent low and uneven participation in university physics. Focusing on how norms are construed in physics classrooms in upper secondary school is therefore relevant.

Purpose: The purpose of this paper is to identify discursive patterns in teacher–student interactions in physics classrooms.

Design and methods: Three different physics lessons with one class of students taught by three different teachers in upper secondary school were video-recorded. Positioning theory was used to analyse classroom interaction with a specific focus on how physics was positioned.

Results: We identified seven different storylines. Four of them (‘reaching a solution to textbook problems’, ‘discussing physics concepts in order to gain better understanding’, ‘doing empirical enquiry’ and ‘preparing for the upcoming exam’) represent what teaching physics in an upper secondary school classroom can be. The last three storylines (‘mastering physics’, ‘appreciating physics’ and ‘having a feeling for physics’) all concern how students are supposed to relate to physics and, thus, become ‘insiders’ in the discipline.

Conclusions: The identification and analysis of storylines raises awareness of the choices teachers make in physics education and their potential consequences for students. For example, in the storyline of mastering physics a good physics student is associated with ‘smartness’, which might make the classroom a less secure place in general. Variation and diversity in the storylines construed in teaching can potentially contribute to a more inclusive physics education.     

Views of physics teachers on how to address the declining enrolment in physics at the university level

Teachers’ views are worth hearing in order to get ideas on how to address the trend of declining enrolment in physics at the university level, which is regarded as a global problem. This study explores physics teachers’ views on how to encourage more students to study physics at the university level. A sample of 166 physics teachers in Singapore schools was surveyed through an open‐ended question survey. Their responses were analyzed qualitatively. Findings indicate that 11 categories emerged from the data. In particular, the categories on review of the physics curriculum and publicizing of the diversity of career opportunities available for physics graduates ranked highly. Some insights into possible ways to address the declining enrolment in physics at the university level are presented.     

Learning in physics by doing laboratory work: towards a new conceptual framework

Drawing on a study that explores university students’ experiences of doing laboratory work in physics, this article outlines a proposed conceptual framework for extending the exploration of the gendered experience of learning. In this framework situated cognition and post‐structural gender theory are merged together. By drawing on data that aim at exploring the gendered experience of learning in physics in the laboratory setting, a case is made for the proposed conceptual framework to facilitate an analysis of gender as an active process that relates the dynamics of this process to the emerging physicist identities of the students. In other words, this framework allows for an analysis of the gendered learning experiences in a context such as physics education that goes well beyond the usual ‘women‐friendly’ teaching approaches.     

Using contrasting cases to improve self-assessment in physics learning

Self-assessment is essential to scientific literacy as stated by the National Research Council Committee on Conceptual Framework for the New K-12 Science Education Standards and has since been incorporated into the Next Generation Science Standards. However, little empirical evidence documents which instructional tools are beneficial in improving students’ self-assessment in science learning. As such, we conducted a classroom-based quasi-experiment to test whether contrasting case-based instructional supports improved 390 introductory high school physics students’ accuracy in self-assessment and academic performance when solving physics problems. We compared the effects of providing students with content knowledge and contrasting cases (contrasting good and poor solution) on students’ physics problem solving and their ability to self-assess, with the effects of either presenting them with content knowledge and good solutions or teaching only content knowledge. We found contrasting examples improved the accuracy of students’ self-assessments, promoted content learning, and enhanced the development of self-assessment strategies.     

Teaching physics in junior high school: crossing the borders of fear

Israeli junior high‐school science teachers usually have a background in biology, and their knowledge of physics is limited. We show that by improving teachers' qualitative understanding it is possible to increase their confidence and willingness to teach physics. We conducted three‐day workshops for teachers (n = 92), which were followed by ongoing activities and support. The teacher workshops were based on a new qualitative approach that we developed for studying mechanics, which has been shown to be effective with students. A study of teachers who had not participated in the workshop shows that they had the same conceptual difficulties as their students. A comparison of pre‐ and post‐workshop questionnaires indicates that the participating teachers gained self‐confidence in their ability to explain everyday phenomena, changed their views about the relevance and interest of physics to the students and were willing to implement the method in their classes.     

Students' experiences of learning in a research environment

Research into the research–teaching ‘nexus’ has undergone significant changes in focus and methodology. From an initial quantitative concern with correlating measurements of research productivity and teaching effectiveness, the empirical emphasis has shifted in favour of exploring the experiences of participants (academics and students). This paper reports the findings of interviews carried out in a New Zealand university with 34 students studying across a range of levels in physics, geography and English. In particular, it focuses on students’ understandings of the purpose of a university education and on students’ experiences of research—how ‘visible’ it is for them, where it is located and who engages in it. Analysis reveals that students’ relationship with research varies across the disciplines in both a spatial and temporal dimension according to the ways in which knowledge is conceived of and explored. Accordingly, some students have an early sense of proximity to and/or participation in a research community, while for others, research remains, through their undergraduate years, a remote phenomenon.     

The impact of physics teachers’ pedagogical content knowledge and motivation on students’ achievement and interest

This paper examines students’ achievement and interest and the extent to which they are predicted by teacher knowledge and motivation. Student achievement and interest are both considered desirable outcomes of school instruction. Teacher pedagogical content knowledge has been identified a major predictor of student achievement in previous research, whereas teacher motivation is considered a decisive factor influencing students’ interest. So far, however, most research either focused on knowledge or motivation (both on the students’ as well as the teachers’ side), rarely investigating them together or examining the instructional mechanisms through which the supposed effects of teacher knowledge and motivation are facilitated. In the present study, N = 77 physics teachers and their classes in Germany and Switzerland are investigated utilizing a multi‐method approach in combining data obtained from test‐instruments (teacher pedagogical content knowledge, student achievement) and questionnaires (teacher motivation, student interest, student perceived enthusiastic teaching) as well as videotaped instruction (cognitive activation rated by observers). Multi‐level structural equation modeling was used to support the assumptions that teacher pedagogical content knowledge positively predicted students’ achievement; the effect was mediated by cognitive activation. Teachers’ motivation predicted students’ interest which was mediated by enthusiastic teaching as perceived by students. Neither did teacher pedagogical content knowledge predict students’ interest, nor teacher motivation students’ achievement. This implies that in order to improve students’ cognitive as well as affective outcomes, both teachers’ knowledge but also their motivation need to be considered. © 2016 The Authors. Journal of Research in Science Teaching Published by Wiley Periodicals, Inc. J Res Sci Teach 54:586–614, 2017     

Prioritizing the education of marginalized young people in Brazil: a collaborative approach

This paper explores constructions of the ‘new’ university student in the context of UK government policy to widen participation in higher education. New Labour discourse stresses the benefits of widening participation for both individuals and society, although increasing the levels of participation of students from groups who have not traditionally entered university has been accompanied by a discourse of ‘dumbing down’ and lowering standards. The paper draws on an ongoing longitudinal study of undergraduate students in a post–1992 inner‐city university in the UK to examine students' constructions of their experiences and identities in the context of public discourses of the ‘new’ higher education student. Many of the participants in this study would be regarded as ‘non‐traditional’ students, i.e. those students who are the focus of widening participation policy initiatives. As Reay et al. (2002) discovered, for many ‘non‐traditional’ students studying in higher education is characterized by ‘struggle’, something that also emerged as an important theme in this research. The paper examines the ways in which these new student identities both echo the New Labour dream of widening participation and yet continue to reflect and re‐construct classed and other identities and inequalities.     

Effective teaching in the context of a grade 12 high‐stakes external examination in New South Wales,Australia

This study identified effective teachers of high‐achieving Grade 12 students in New South Wales, Australia. Nineteen teachers, across a variety of curriculum areas, were observed teaching and then interviewed. A further six teachers were interviewed only. Despite the high‐stakes end‐of‐schooling examination, generating interest in and understanding of the subject was their paramount concern. A key common factor was an emphasis on having students apply knowledge, rather than being ‘spoon‐fed’ information. Although many aspects of the lessons were channelled through the teachers, frequent opportunities existed for independent learning. Classrooms were relaxed environments, but highly focused. Teachers attributed their success to four major factors: their relationships with students, their classroom practices, the students themselves and faculty cooperation. No evidence was found that the high‐stakes examination inhibited best‐practice teaching.     

Rethinking silence in the classroom: Chinese students’ experiences of sharing indigenous knowledge

Recent research has documented silence/reticence among East‐Asian international students, including Chinese students, in Western/English classrooms. Students’ communication competence and cultural differences from the mainstream Euro‐American society have been identified as two primary barriers to participation. Placing emphasis on individual characteristics of Chinese students, however, without considering aspects of the educational context with which those characteristics interact, may over‐simplify and distort the mechanism underlying their silence in the classroom. Based on a qualitative study of Chinese students’ experience of sharing indigenous knowledge in classroom settings of Canadian academic institutions, it is argued that the pursuit of diversity in the classroom may be compromised by classroom interactions, through which, for instance, the dynamics and quality of the knowledge exchange of students from different socio‐cultural backgrounds may be adversely affected. Within this conceptual framework, the concepts ‘silence’, ‘culture difference’ and ‘indigenous knowledge’ are re‐examined; the concepts ‘reciprocal cultural familiarity’ and ‘inclusive knowledge sharing’ are advocated.

… [W]hen I did participate, mostly because I was required to. … Students took turns to present something and that is your topic. You have to say something but even then I didn’t feel that good because it seems … they didn’t feel that interested, … like they couldn’t follow my ideas, follow my perspective. And so it seems difficult to communicate. I think that is not just because of the language, it seems we see the same thing in different ways.

(Chinese student in this study)     

The underachievement of girls in physics: Towards explanations

The recently initiated debate on the relationship between science and health education is discussed. The notions of ‘everyday’, ‘scientific’ and ‘applied’ knowledge are explored through interview material gathered from a sample of 15‐year old pupils. The topic of the interviews was the common cold. The pupils’ levels of biological knowledge, their mode of applying it, and the frameworks of their thinking about infection and related issues were investigated. It is argued that no simple ‘translation’ of scientific to health knowledge is possible. Some of the complexities of the relationship are explored. In particular, the implications of non‐scientific ('lay’ or ‘traditional') knowledge are taken up and it is suggested that scientific knowledge may face considerable obstacles in displacing these.

     

Some features of causal reasoning: common sense and physics teaching

The idea of causality is central in science and has long given rise to debate among philosophers and scientists. While the tendency to avoid causality seems to have become dominant in science and philosophy, research in science education has shown the strong presence in common reasoning of causal explanations, often conceived as a ‘mechanism’ capable of accounting for physical transformations. Some researchers have proposed using this common causal reasoning as a basis for teaching–learning sequences, especially in electricity and mechanics. This paper analyses some features of causal reasoning used in physics by students, using questionnaires and interviews involving students and teachers. This study has shown three aspects which are related to one another: a confusion between efficient and contingent causes, between the conditions of occurrence of a phenomenon and the cause actually producing it; a tendency to ‘displace’ causes, skipping intermediate objects; and a difficulty in connecting local causes and global effects. The paper highlights the differences between common reasoning and scientific usage, and their effect on learning. In fact, these trends of reasoning must be taken into account in teaching: they should be considered not only as creating an obstacle to learning physics, but also as resources at the learner’s disposal.     

The use of self,peer and teacher assessment as a feedback system in a learning environment aimed at fostering skills of cooperation in an entrepreneurial context

Education is criticized for producing inert knowledge and for paying too little attention to skills such as cooperating and problem solving. Powerful learning environments have the potential to overcome these educational shortcomings. The goal of this research was to find out ways in which a ‘learning enterprise’ can best be supported (coached) in order to constitute a powerful learning environment aimed at teaching certain cooperative skills in a business context. This ‘learning enterprise’ constitutes an entrepreneurial context in which students in secondary or higher education are working together to conceptualize and eventually commercialize a product. In this research, the impact of different ways of supporting a learning enterprise will be compared. These ways are based on existing guiding principles for the design of powerful learning environments and on a further elaboration of these principles in what is conceptualized as an ‘equilibrium model’. In this model, the balances that are needed between motivating students, activating them towards self‐regulated learning, coaching, structuring and steering the learning processes have been elaborated. Based on this model a differentiation between a ‘student‐controlled’, a ‘teacher‐controlled and a ‘coached approach’, as an equilibrated way between the various approaches to coaching a learning enterprise, has been worked out. We hypothesize that the coached approach will give the best learning results in relation to cooperative skills. A combination of self, peer and teacher assessment of these skills, and an adequate feedback‐strategy based on these assessments, should be an important part of approaches used. These approaches were put into practice in a design experiment, and the impact was compared by means of a pre‐test/post‐test design. Results confirmed the postulated hypotheses that there will need to be a balance between, on the one hand giving students enough freedom for self‐discovery and self‐regulation, and on the other hand steering the students in such a way that certain problems can be avoided and that every student can get optimal learning chances. An adequate assessment‐strategy is needed to search for this balance. Further, a systematic action research of the design experiences resulted in more information on how best to coach a learning enterprise. This information has been summarized in the form of general guidelines.     

Conflict within dyadic interactions as a stimulant for conceptual change in physics

Research suggests that conventional teaching techniques have proved largely ineffective for dealing with the problem of science students’ misconceptions or alternative frameworks. This paper reports an investigation whereby inter‐personal conflict within dyadic interactions is used as a strategy for promoting development towards correct scientific conceptions in specific areas of electrical circuits and mechanics amongst first‐year tertiary physics students. The data indicate that a large number of physics students at the tertiary level hold non‐scientific conceptions of these physical phenomena. The dyadic interaction strategy proved effective as a means of encouraging students to actively and closely consider their own thinking about basic physical concepts. Further, results highlight the importance of inter‐personal conflict in the process of conceptual change.     

The symbiotic roles of empirical experimentation and thought experimentation in the learning of physics

This study was an attempt to identify the epistemological roots of knowledge when students carry out hands‐on experiments in physics. We found that, within the context of designing a solution to a stated problem, subjects constructed and ran thought experiments intertwined within the processes of conducting physical experiments. We show that the process of alternating between these two modes — empirically experimenting and experimenting in thought — leads towards a convergence on scientifically acceptable concepts. We call this process mutual projection. In the process of mutual projection, external representations were generated. Objects in the physical environment were represented in an imaginary world and these representations were associated with processes in the physical world. It is through this coupling that constituents of both the imaginary world and the physical world gain meaning. We further show that the external representations are rooted in sensory interaction and constitute a semi‐symbolic pictorial communication system, a sort of primitive ‘language’, which is developed as the practical work continues. The constituents of this pictorial communication system are used in the thought experiments taking place in association with the empirical experimentation. The results of this study provide a model of physics learning during hands‐on experimentation.     

Characterising Learning Interactions: A Study of University Students Solving Physics Problems in Groups

The purpose of this article is to explore how a group of four university physics students addressed mechanics problems, in terms of student direction of attention, problem solving strategies and their establishment of and ways of interacting. Adapted from positioning theory, the concepts ‘positioning’ and ‘storyline’ are used to describe and to analyse student interaction. Focused on how the students position the physics problems, themselves, and each other, the analyses produced five different storylines. The dominant storyline deals with how the students handled the problem solving, whilst two other storylines characterise alternative ways of handling the physics problems, whereas the two remaining storylines are concerned with how students positioned themselves and others—as either funny and/or knowledgeable physics students—and constitute different aspects of the physics community. Finally, the storylines are discussed in relation to the pedagogical situation, with recommendations made for teaching practice and future research.     

Models in physics: perceptions held by final‐year prospective physical science teachers studying at South African universities

Abstract

The nature of physics as a scientific discipline is largely determined by the models of reality it utilizes. It is therefore appropriate that teachers of physics have a sound knowledge of the origin and nature of these models, their functions and the role they play in the development of the discipline. The results of a study with regard to the perceptions of models held by prospective physical science (a combination of physics and chemistry) teachers studying at South African universities are reported in this paper. The overall conclusion drawn from the study is that these students are far from prepared to incorporate models properly in their teaching. General misconceptions about models have also been identified. These misconceptions can have far‐reaching effects on the structuring of the physics knowledge of pupils exposed to them.