Showing papers in "Research in Science Education in 1995"

Measuring attitudes to science: Unidimensionality and internal consistency revisited

Abstract: Summated ratings attitude scales commonly consist of numerous items whose scores are summed to yield a total score. An assumption underlying this technique is that the items in the scale reflect a common construct. If this is not met, the procedure produces uninterpretable data. Although this psychometric principle has been known for a long time, numerous studies in the literature demonstrate a neglect of it. Some make no attempt to conceptualise the construct to be measured; others conceptualise the construct but then ignore the possibility that it may be multidimensional; still others contain evidence indicating that the construct is multidimensional and then proceed to ignore that evidence. A possible contributor to the confusion is the misunderstanding of the related yet distinct concepts of internal consistency and unidimensionality. This paper presents examples of poor and good instrument design, in the hope that clarification of the issues might make a difference in the future.

Children's choice of drawings to communicate their ideas about technology

Abstract: This study examines children's choice of drawing to communicate their understanding of the concept “technology”. The study explored whether the children's drawings accurately reflected the depth and range of their understanding of technology in a way that was interpretable by others. Data were collected from 314 primary school children in England and 745 children in Western Australia. Children were invited to demonstrate their knowledge and understanding about technology by responding to a writing/drawing activity and a representative subsample were then interviewed about their responses. About two-thirds of children's responses to the activity included drawings. Children held a wide range of ideas about technology and only rarely was a drawing difficult to interpret. Although overall the drawings reflected the range of children's ideas, sometimes they did not reveal the depth or breadth of an individual child's understanding. Consistent with the ideas represented in the drawings, the interviews found that younger children held simpler ideas about technology, while older children held more complex, and sometimes quite abstract concepts of technology. A notable difference between the two countries was the emphasis on “design and make” and a smaller proportion of no response in the English sample, reflecting the greater length of time technology education has been implemented in England compared to Western Australia.

Interpersonal behaviour in senior high school biology classes

Abstract: This article describes the first use of the Questionnaire on Teacher Interaction in senior biology classes and describes students' perceptions of their interpersonal relationships with their teachers in the classroom environment. The article also describes associations between students' perceptions of interpersonal relationships with their teachers and student outcomes. The study confirmed the reliability and validity of the QTI when used in senior secondary biology classes. Generally, the dimensions of the QTI were found to be significantly associated with student attitude scores. In particular, students' attitude scores were higher in classrooms in which students perceived greater leadership, helpful/friendly, and understanding behaviours in their teachers.

Science teaching self-efficacy in a primary school: A case study

Abstract: Bandura's theory of self-efficacy predicts that teachers with high, self-efficacy should persist longer, provide a greater academic focus in child-centred classrooms and exhibit different types of feedback than teachers who have lower self-efficacy. This paper reports on the science teaching self-efficacy in a group of teachers at a state primary school. The research was conducted in two stages using firstly the Science Teaching Efficacy Beliefs Instrument (STEBI-A) to identify cases, and secondly, a semistructured interview coupled with classroom observations. Thirty seven teaching staff were surveyed with the STEBI-A instrument. The five highest and five lowest scoring teachers on the personal science teaching self-efficacy subscale of the STEBI-A were interviewed. The analysis of interviews and observations indicated that teachers with high personal science teaching self-efficacy have had a long interest in science and a relatively strong background of formal science studies with opportunities for exploring out of school activities. Although they may have experienced negative science experiences in their own schooling other ameliorating factors existed which maintained their interest. Their instructional strategies in science lessons were more child-centred than those reported by teachers with lower personal science teaching self-efficacy. The implications of the results for the inservice training of teachers are discussed.

The POE in the Primary School: An Evaluation.

Abstract: The POE (Predict-Observe-Explain) is a technique for identifying students' knowledge and understanding of science concepts. It has mainly been used for physical science topics at secondary and tertiary levels. In the present study, 60 preservice teachers each implemented and evaluated POEs with groups of primary children. The children were studying a range of topics from the NSW Science and Technology K-6 Syllabus and represented a range of year levels. The evaluations were generally positive. The children responded to the technique enthusiastically and the teachers were able to identify both their understandings and their process skills development. The main problems were the difficulty of inventing suitable POEs in some topics, especially topics on communication, and problems caused by the use of oral rather than written responses. The study concluded that it is a suitable technique for primary science.

Practising What I Preach: Modelling Reflective Practice to Student Teachers.

Abstract: This study explores the relationship between a teacher educator's explicit modelling of reflection on practice and student-teachers' developing use of reflection on practice. In this case, the teacher educator attempted to offer his student-teachers opportunities to see, hear and understand the thinking that underpinned his pedagogy so that they might better understand and develop their reflective skills in their own teaching practice. Through a framework developed from the work of Dewey (1933) a theoretical perspective on reflection was designed and applied to the student-teachers' thoughts as displayed through their journal writing and interviews. This paper demonstrates that modelling is an important aspect to enhancing student-teachers' learning about teaching and learning.

A comparative analysis of analogies in secondary biology and chemistry textbooks used in Australian schools

Abstract: To aid the explanation of abstract science concepts, authors of textbooks employ learning tools such as analogies to help students learn. Analogies are believed to allow new material to be more easily assimilated with students' prior knowledge by linking it to their previous experiences. Continuing research on analogies in science textbooks and science teaching is providing a clearer picture of the types of analogies that are available (Duit, 1991), their ranges of presentation style (Curtis & Reigeluth, 1984; Thiele & Treagust, 1992), and their efficacy to effect students' conceptual understandings (Harrison & Treagust, 1993).

Interpretation of Students' Understanding of the Concept of Weightlessness.

Abstract: This study reports on an investigation of students' understanding of the concept of weightlessness among intermediate, high school and college students. It appears possible to interpret this knowledge as being highly influenced by the confusion between two basic physics concepts, weight and gravitational force, which are often equated in a standard physics curriculum. The proposed causal structure of students' knowledge presents a platform for interpreting a cluster of students' alternative ideas about weight and related physical concepts. This platform could guide physics educators in their considerations of appropriate strategies for presenting weight and gravity topics in the classroom.

Students' Perceptions of Teaching and Learning in First-Year University Physics

Abstract: The transition from school to university involves substantial change in the structure and organization of teaching, and in the nature and purpose of learning contexts. This paper, which reports some data from a broader study of learning and teaching in first year university physics, focuses on aspects of the school-university transition. In particular, we report perceptions of first year physics students about how they should learn physics, what it is intended they should learn, and what they believe to be the functions of the various teaching situations in which they are placed.

From "Wiggly Structures" to "Unshaky Towers": Problem Framing, Solution Finding, and Negotiation of Courses of Actions During a Civil Engineering Unit for Elementary Students.

Abstract: The present study was designed to investigate problem- and solution-related activity of elementary students in ill-defined and open-ended settings. One Grade 4/5 class of 28 students engaged in the activities of the “Engineering for Children: Structures” curriculum, designed as a vehicle for introducing science concepts, providing ill-defined problem solving contexts, and fostering positive attitudes towards science and technology. Data included video recordings, ethnographic field notes, student produced artefacts (projects and engineering logbooks), and interviews with teachers and observers. These data supported the notion of problems, solutions, and courses of actions as entities with flexible ontologies. In the course of their negotiations, students demonstrated an uncanny competence to frame and reframe problems and solutions and to decide courses of actions of different complexities in spite of the ambiguous nature of (arte)facts, plans, and language. A case study approach was chosen as the literary device to report these general findings. The discussion focuses on the inevitably ambiguous nature of (arte)facts, plans, and language and the associated notion of “interpretive flexibility.” Suggestions are provided for teachers on how to deal with interpretive flexibility without seeking recourse to the didactic approaches of direct teaching. But what happens when problems and solutions are negotiable, when there are no longer isolated problems which one tries to solve but problems which maintain complex linkages with ensembles of other problems and diverse constraints, or when problems and solutions are simultaneously invented? (Lestel, 1989, p. 692, my translation)

The transformation of individual and collective knowledge in elementary science classrooms that are organised as knowledge-building communities

Abstract: This study was designed to address two purposes. First, we wanted to test working hypotheses derived from previous studies about the transformation of individual and collective knowledge in elementary classrooms. Second, we attempted to understand the degree to which “ownership” was an appropriate concept to understand the process of learning in science classrooms. Over a four-month period, we collected extensive data in a Grade 6/7 classroom studying simple machines. As in our previous studies we found that (a) conceptual and material resources were readily shared among students, and (b) tool-related practices were appropriated as newcomers participated with more competent others (peers and teachers) in the pursuit of student-framed goals. We also found that for discursive change (“learning”) at the classroom level to occur, it appeared more important whether a new language game was closely related to students' previous language games than who actually proposed the new language game (teacher or student). Implications are drawn for the design of science curricula and classroom activities.

Perceptions of the relevance of mathematics and science: An Australian study

Abstract: This study examined students from schools mostly in Sydney and Wollongong (New South Wales, Australia). While the private girls' school used in this survey has had a very good record of girls staying on in physics, some of the public schools surveyed have had very low retention rates (and not only in the science and mathematics areas). This paper attempts to describe student differences in perceptions and attitudes and how these are related to gender and type of school. Additionally, students' perceived reasons for not performing well in mathematics and science were investigated.

Developing Preservice Teachers' Pedagogical Reasoning Ability.

Abstract: Teachers not only need to develop a knowledge base for teaching, but also should be able to make reasoned decisions regarding their classroom science teaching. Preservice teachers need opportunities to begin developing their pedagogical reasoning ability as part of their undergraduate education so that science teaching in primary schools is based on sound reasoning. This paper, using a case study methodology, reports on the initial pedagogical reasoning ability of second-year preservice primary teachers. By completing a problem-based science education topic, these preservice teachers had the opportunity to explore all stages in the pedagogical reasoning process. Preservice teachers initially demonstrated limited pedagogical reasoning ability, but as a result of the framework provided in the problem-based approach, they were able to refine their reasoning ability. Through a combination of group work and individual research, the preservice teachers were able to integrate their science knowledge, curriculum knowledge and knowledge of learners and apply this to a peerteaching situation and in the process develop their pedagogical reasoning skills.

Student Teachers' Conceptions of How to Recognise a "Good" Primary Science Teacher: Does Two Years in a Teacher Education Program Make a Difference?.

Abstract: Several studies have suggested that preservice teacher education has little impact on student teacher conceptions about various facets of teaching and learning. Most of these studies refer to generic teaching and learning, and very few have related to primary science in particular. To explore this area eight primary student teachers were interviewed on six occasions during the first two years of their Bachelor of Teaching degree. This paper reports the findings from part of these interviews. It describes the (sometimes changing) conceptions which these eight students held about how they would recognise a “good” teacher of science and the people and experiences they believed influenced the formation of these views. The differential impact of past and present teachers and the teacher education program revealed possible implications for practica and science curriculum units in particular, if teacher education is going to have an influence on preservice teachers' conceptions about teaching and learning.

Metaphors as Global Markers for Teachers' Beliefs about the Nature of Science.

Abstract: In this paper, we report an analysis of metaphors used by three science teachers in their classroom discourse and consider the implications of this research for the image of science that students are likely to construct. Teacher beliefs about the nature of science are implicit and entrenched and may be contrary to both contemporary philosophies of science and constructivist theory. We argue that the presence of metaphors such ateaching as a journey, knowledge as object andteacher as pathfinder in teachers' classroom discourse signify the implicit existence of a powerful objectivist epistemology that governs teachers' pedagogies. If students are to construct contemporary views of the nature of science and if constuctivist pedagogy is to develop in the science classroom then science teachers need to reflect on their use of these role-determining objectivist metaphors.

Student disclosures of fraudulent practice in school laboratories

Abstract: The debate about the inclusion of laboratory practicals in the school curriculum is continued in this paper which reports on fraudulent practice by students. One of the widely accepted goals of school laboratory practicals is to teach students about the nature of scientific inquiry. This paper reports how student disclosures of their actual practice in school laboratories is at odds with such a goal. We identify and define the student practice of “fudging” which involves faking, fabricating, or stealing data. Five types of fudging behaviour are described. The factors contributing to and the motivations for such behaviour are also identified.

Toward a critical approach to the study of learning environments in science classrooms

Abstract: Traditional learning environment research in science classrooms has been built on survey methods meant to measure students' and teachers' perceptions of variables used to define the learning environment. This research has led mainly to descriptions of learning environments. We argue that learning environment research should play a transformative role in science classrooms; that learning environment research should take into account contemporary post-positivist ways of thinking about learning and teaching to assist students and teachers to construct a more emancipatory learning environment. In particular, we argue that a critical perspective could lead to research playing a larger role in the transformation of science classroom learning environments. This argument is supplemented with an example from a middle school science classroom.

A Constructivist Approach to Change in Elementary Science Teaching and Learning.

Abstract: Constructivism is a set of beliefs that can be used by teachers to think about learning and teaching and to plan and enact a science curriculum. This paper is a fictional account of an elementary science teacher and her use of constructivism as a referent for her various roles as a science teacher. The paper also describes how the teacher came to teach in this manner, describing her involvement in staff development activities and an evolution in her thinking from an ojectivist to a constructivist system of semantics. Implications are presented for the reform of science education.

The Development, Trial and Evaluation of a Constructivist Teaching and Learning Approach in a Preservice Science Teacher Education Program.

Abstract: This paper reports on the use of a constructivist teaching/learning approach to improve first year pre-service primary teachers' confidence in, and attitude to, teaching science. The two-semester program was based on allowing the students to explore science concepts in detail during the first semester and then developing constructivist pedagogy in the second semester. There were many benefits reported by students including ownership of knowledge, the development of pedagogic skills and the use of group work to develop ideas. However, a number of concems were raised such as uncertainty of knowing what to do when exploring knowledge for themselves and the lack of note taking which occurred. A number of issues that need to be considered when re-implementing the program are discussed.

Associations Between School-Level Environment and Science Classroom Environment in Secondary Schools

Abstract: This article describes a study of links between school environment and science classroom environment. Instruments to assess seven dimensions of school environment (viz., Empowerment, Student Support, Affiliation, Professional Interest, Mission Consensus, Resource Adequacy and Work Pressure) and seven dimensions of classroom environment (viz., Student Affiliation, Interactions, Cooperation, Task Orientation, Order & Organisation, Individualisati n and Teacher Control) in secondary school science classrooms were developed and validated. The study involved a sample of 1,318 students in 64 year 9 and year 12 science classes and 128 teachers of science in Australian secondary schools. Using the class mean as the unit of analysis for student data, associations between school and classroom environment were investigated using simple, multiple and canonical correlational analyses. In general, results indicated weak relationships between school and classroom environments and they reinforced the view that characteristics of the school environment are not transmitted automatically into science classrooms.

Problem solving in science lessons: How students explore the problem space

Abstract: This report examines, from a constructivist framework, how students presented with discrepant event problems during science lessons begin the problem solving process by exploration of the problem space. Three discrepant events were presented to five classes of eleven to thirteen year-olds using three different teaching strategies identified from the literature. The teaching strategies used teacher demonstrations followed by students asking the teacher questions, teacher demonstrations followed by an explanation by the teacher, and small groups of students under the guidance of the teacher. Data were collected from field notes, video tapes of the lessons, and student interviews using a stimulated recall technique to elicit the students' thinking during the lessons. The extent to which students could explore the problem space was found to be determined by the teaching strategy used, as the first and last strategies encouraged students to find their own explanations. Different information sources were also available in each of the teaching strategies. That is, exploration of the problem space was inextricably linked to the social context, partially determined by the teaching strategy. Because of constraints imposed by each teaching strategy none of those used was considered entirely satisfactory. An alternative strategy is suggested from a combination of aspects of the strategies trialled.

Assessment and investigation of science laboratory skills among year 5 students

Abstract: In line with the current interest in alternative and authentic assessment, this study focused on the evaluation of students' performance on science laboratory process skills. A sample of 147 year 5 students from six schools responded to laboratory process skills tests which assess investigating, performing and reasoning in the content areas of biology, chemistry and physics. The data were analysed to provide information about students' overall practical performance and to identify specific preinstructional conceptions and erros. An investigation of predictors of laboratory performance revealed significant associations between performance and amount of homework done and students' perceptions of several aspects of the classroom environment (personalisation, investigation and organisation). The gender differences commonly found in science achievement were absent when laboratory performance was used as the criterion.

Teaching physics to prospective elementary teachers: Bridging gaps or widening chasms

Abstract: The education of prospective Elementary and Early Childhood (E&EC) teachers to teach science has been an on-going challenge for science teacher educators. Accordingly, a course in physical science was planned and implemented especially for prospective E&EC teachers. The purpose of this study was to understand the nature of the enacted curriculum and about the forces which constrained its evolution. Miller, the teacher of the course, had no prior experience in teaching prospective E&EC teachers and many of his experiences as a university level teacher were based on his teaching of physics majors. These experiences shaped his approach to teaching the course as did his years as a basketball coach. Miller was an expert in physics and constructed his role as teaching students significant scientific truths. Miller saw the purpose of the course as being to educate the students in science, not to prepare them to teach science. He was unwilling to address the goals of students that were oriented strongly toward becoming better teachers. The beliefs of the teacher constrained the enacted curriculum to an extent that gaps between the needs of students and the enacted curriculum were wider at the end of the course than they were at the beginning.

Conceptions of scientific literacy: Reactionaries in ascendency in the state of Victoria

Abstract: Schooling as much as any other social activity is determined by ideology. The introduction of the VictorianCurriculum & Standards Framework is a case in point. The alliance between the new Victorian State government and traditionalists has “reformed” the schooling of science. Evidence is presented that points to a return to a conception of scientific literacy in which the central mythology of value-free science is the guiding principle. Here is a vision for an “educated” Australia, which begs the question: Whose Australia?

STS and comparative assessment of scientific theory

Abstract: Comparative studies of science education can emphasise either student learning of school science in a competitive sense or the variety of science learnings that contemporary curricula for science expect. The Third International Maths and Science Study (TIMSS) is endeavouring to achieve a balance between these two different and psychometrically conflicting possibilities. The impact of STS on a number of countries' science curricula in the last few years is used to explore these tensions in the planning of TIMSS.

An in-depth study of two individual students' understanding of electric and magnetic fields

Abstract: This paper describes and compares individual students' understanding of a range of concepts associated with electric and magnetic fields. Data are drawn from written tests and detailed interviews of students from a first-year university physics class. The case study approach makes it possible to examine in depth the interaction between conceptions of various related topics in the students' minds. The theoretical framework of the SOLO (Structure of the Observed Learning Outcome) Taxonomy, as elaborated in a previous paper on this topic area by the author, is further advanced here. Using this framework, the paper provides insight into a more detailed view of students' understanding of fields, which in turn casts light on possible teaching strategies for fields and related topics.

Exploring the Boundaries: A Study of Multiple Classroom Learning Environments.

Abstract: The study of learning environments has developed into a productive field of research in science education. Initially, the design and application of classroom perceptual measures of particular dimensions of science classrooms attracted much attention. More recently, such instruments have been used alongside of qualitative techniques to provide a richer understanding of sub-environments. We continue this trend in the present interpretive study by exploring the nature of multiple environments within a middle school classroom from the different perspectives of teacher, student and participant observer. In particular, we examine the activity settings of lectures and group work, as well as the issues of learning and assessment. We conclude by arguing that teachers need to adopt procedures that enable them to identify and plan for multiple environments.

Children linking science and technology in the primary classroom

Abstract: This research project exemplifies how technology can facilitate scientific investigations. It also highlights how enthusiastic children can be when they are encouraged to pose their own questions and take responsibility for finding the answers. Year 5 children, working in groups, were involved in designing, making and appraising catchers and enclosures used to investigate small animals found within their school's grounds. A videotape of this project was made and should be a valuable resource for the professional development of both trainee and practising teachers. Included in the tape are children's spontaneous comments, their concern for animal welfare, and reflection on the various aspects of their investigations.

Making Sense of Students' Science: The Construction of a Model of Tinkering.

Abstract: The science which students bring to the classroom has received a lot of research attention in recent years. These studies have focused on the investigation of children's conceptualisation of scientific phenomena. The present study brought a wider perspective by also seeking to describe the intuitive methods which students learn from their everyday experiences. The focus was on one method by which some students acquire their prior experiences, namely tinkering. Specifically, the nature of tinkering was explored within the context of one area of physical science, electricity. The findings therefore add a new dimension to our understanding of the science that students bring to the classroom. The results offer this clarification by proposing a model of tinkering.

Science education research and cognitive science

Abstract: Cognitive science has the potential for offering explanatory models for many of the findings of empirical research in science education. In this paper, I use recent editions of international journals of science education to produce a categorisation of types of science education research, and what possible contributions each might make to cognitive science or the potential of results from cognitive science for enriching the science education research accounts. In a short, final section, the relationship of our own cognitive work to cognitive science is explored.