The impact of science curricula on student views about the nature of science

This review of the literature focused on three decades of research related to precollege student understandings about the nature of science. Various interpretations of what aspects characterize the nature of science were examined, revealing an agreement among scientists, science educators, and those involved in policy-making arenas that the nature of science is multifaceted and an important component of scientific literacy. A summary of the research regarding the adequacies of student conceptions about the nature of science revealed inconsistent results. Although the majority of studies show that student understandings are less than desirable, there is research that indicates that student conceptions are acceptable. Research on the impact of instructional materials and techniques on student understandings was also reviewed. The effects of language in science instruction, the content emphasis of instructional materials, integrated science curricula, and instruction in general were curricular variables found to have a negative impact on student understandings about the nature of science. Empirical evidence about the success of innovative instructional materials and techniques designed to facilitate more adequate understandings of the nature of science is needed.     

Understanding the nature of science: A comparison of scientists and science teachers

Interpreting science in the culture is coming to be the responsibility of a science teacher. The author finds that some neophytes are prepareil.     

Examining student conceptions of the nature of science

The purpose of this research was to examine pre-college students' understandings of the nature of science and track those beliefs over the course of an academic year. Students' conceptions of the nature of science were examined using a model of the nature of science developed for use in this study. The model has eight tenets which address both the nature of the scientific enterprise and the nature of scientific knowledge. Findings indicate participants held fully formed conceptions of the nature of science consistent with approximately one-half of the premises set out in the model. Students held more complete understandings of the nature of scientific knowledge than the nature of the scientific enterprise. Their conceptions remained mostly unchanged over the year despite their participation in the project-based, hands-on science course. Implications for teaching the nature of science are discussed.     

Primary student teachers' conceptions of the nature of science

An understanding of current views of the nature of science continues to be regarded as an important outcome of school science. Studies of the conceptions of the nature of science held by primary school teacher education students is therefore important. This article reports the conceptions held by 73 preservice primary teachers. There were elements in the conceptions of the nature of science articulated by this group which clearly were not in accord with modern views. For example, one in five, in many instances, chose responses which would be unacceptable to many modern philosophies of science. Further, many chose 'don't know' as a response to a variety of specific propositions about science, ranging from a low of 1.5% to 3.15% of respondents. The responses of school leavers and mature age students did not differ in any substantial way. In addition, the use of newspaper science reports is described as a novel means to probe conceptions of the nature of science.     

The interaction of student characteristics and science teaching on student perception of the learning environment

Conclusion The interactive perspective adopted in this study suggested an alternative approach to the study of the effects of student characteristics upon their perceptions of the classroom. This perspective emphasised the necessity to examine the nature of the interaction between the student (or more exactly the student variable) and his learning environment before testing for the presence of these effects. Six relationships were consequently proposed, and both the analyses and qualitative data supported the presence of five of these in the ongoing activities of the classroom. This paper forms part of a larger study done by the author while a member of the Education Research Unit, Research School of Social Sciences, Australian National University.     

Preparing student teachers for alternative assessment in science

This material is based upon work supported in part by a grant from the National Science Foundation California State University Student Teaching Development Project (DOE-9250027) and the W. M. Keck Foundation. Any opinions, findings, and conclusions or recommendations expressed in this article are those of the authors and do not necessarily reflect the views of the funding ordanizations.     

Reflective Dialogue in Teams: a vehicle to support belief change in student teachers

This paper presents an approach to belief change in teacher education programmes. Although belief change may constitute a more relevant goal for initial teacher education than knowledge transmission and competence attainment per se, relatively few models or methods have been put forward that can help student teachers to become aware of, knowledgeable about, and actively involved in changing and (re) constructing their own teaching beliefs. The model of study teams is presented as a relevant approach to teaching in teacher education, together with some preliminary evaluations regarding its implementation. It shows that utilising study teams can have a strong impact on teacher education programmes as well as on student teachers’ thinking.     

Estimating the impact of relative expected grade on student evaluations of teachers

Grade inflation over the past few decades has been a concern for many universities. Course evaluation scores are known to be positively correlated with students’ expected grades, and this paper tests whether or not there is an incentive for the instructor to “buy” higher evaluation scores by inflating grades. To test this hypothesis, I use unique data from the University of Washington's Office of Educational Assessment that includes a measure of each student's relative expected grade in the course. I find that there is an incentive for instructors to grade leniently after accounting for the potential endogeneity of the relative expected grade variable due to unobserved teacher productivity and unobserved heterogeneity of instructors and departments. Instructor fixed effects account for a significant part of the measured effect of relative expected grade on evaluations, and by not including them, the estimated impact of relative expected grade on evaluations is biased upwards.     

Expectations of higher education students: a comparison between the perception of student and teachers

Higher education institutions are ever more interested in the development of tools that enable them to evaluate and manage the expectations of their students with the purpose of attracting and keeping them satisfied. This research compares what the faculty believes the students expect from a higher education institution with the expectations of students entering higher education. A quantitative study was performed with students from a higher education institution through the application of a questionnaire covering 32 different expectations. The perceptions of the faculty were also collected through the same questionnaire, suitably adapted. The results of the investigation demonstrated differences in thinking between students and professors, with 19 variables representing student expectations that showed statistically significant mean differences. In 13 variables the students had greater expectations than the faculty believed, while for six variables the faculty indicated higher expectations than the students declared. Identifying the existence of this gap in knowledge will allow the higher education institution to adjust its services to the expectations of students, leading them to greater satisfaction.     

五年制大专幼师自然科学课程的改革建议

面对幼师生的科学素质与社会对幼师的科学素养的要求落差越来越大的现象,本文从课程设置、课程内容、课程目标、课程的评价四个方面提出幼师自然科学课程的改革。对初中起点的五年制大专和幼师职业教育的自然科学课程的教学有一定的参考意义。     

The impact of student characteristics and teacher efficacy on teachers’ predictions of student success

This study examined how the interaction between student and teacher characteristics affects teachers’ predictions of students’ academic and social success. Three hundred and eighty-four general education teachers responded to (a) one of 32 possible case studies describing a student, in which gender, reading achievement, social behavior, and attentiveness were manipulated experimentally and (b) to a 16-item teacher-efficacy scale. Results showed that (1) teachers with high efficacy make less negative predictions about students, and seem to adjust their predictions when student characteristics change, while low efficacy teachers seem to be paying attention to a single characteristic when making their predictions. (2) All teachers respond similarly to students who exhibit a combination of aggressive and inattentive behaviors, that is, if students are friendly, inattentiveness is tolerated more than if they are aggressive. (3) All teachers make higher predictions of academic success for students reading on grade level even when they are aggressive, than for students reading below grade level even when they are friendly. The authors discuss the importance of attending to the complexity of characteristics each student brings in to the classroom.     

Preordained science and student autonomy: the nature of laboratory tasks in physics classrooms

The central question facing humankind is 'What kind of society are we to have?' We argue that in order to begin to answer this question, citizens need to recognize that one of the driving forces determining our society is that science is a human social activity like any other. This flies in the face of much of the rhetoric and ideology about science - the stories and myths of formal and informal education. We wish to encourage both a socially responsible science and a public mindful of its strengths and weaknesses. We explore two case studies to illustrate our concerns. These are the construction of knowledge about Acquired Immune Deficiency Syndrome (AIDS), and the social construction of safety standards for exposure to low-level ionizing radiation. These two health-related controversial scientific issues illustrate the problematic nature of much of science and the implications for the public at large.     

New Learning Design in Distance Education: The impact on student perception and motivation

Many forms of e‐learning (such as online courses with authentic tasks and computer‐supported collaborative learning) have become important in distance education. Very often, such e‐learning courses or tasks are set up following constructivist design principles. Often, this leads to learning environments with authentic problems in ill‐structured tasks that are supposed to motivate students. However, constructivist design principles are difficult to implement because developers must be able to predict how students perceive the tasks and whether the tasks motivate the students. The research in this article queries some of the assumed effects. It presents a study that provides increased insight into the actual perception of electronic authentic learning tasks. The main questions are how students learn in such e‐learning environments with “virtual” reality and authentic problems and how they perceive them. To answer these questions, in two e‐learning programs developed at the Open University of the Netherlands (OUNL) designers’ expectations were contrasted with student perceptions. The results show a gap between the two, for students experience much less authenticity than developers assume.     

Questions asked by primary student teachers about observations of a science demonstration

Teacher questioning has a central role in guiding pupils to learn to make scientific observations and inferences. We asked 110 primary student teachers to write down what kind of questions they would ask their pupils about a demonstration. Almost half of the student teachers posed questions that were either inappropriate or presupposed that the pupils would know the answer. For example, they directly asked for an explanation of the phenomenon instead of asking what inferences the pupils could make on the basis of their observations. There was a lack of questions that would draw the pupils’ attention to the variables that may cause the phenomenon to happen. Only about 15% of the student teachers formed questions such as ‘What is happening?’ or ‘How is it happening?’. All in all, primary student teachers seem to need extra practice in forming questions based on scientific observation.     

Influencing student understanding of the nature of science: Data from a case of curriculum development

The purpose of this study was to investigate the effects of the first-year field test BSCS middle school science program on student understanding of the creative, developmental, testable, and unified nature of science. The experimental group, which was exposed to the BSCS program, and the control group, which was taught using a more traditional middle school science curriculum, were administered a pretest and posttest using the Modified Nature of Scientific Knowledge Scale (MNSKS). Analyses of the results showed that the understanding of students who experienced the BSCS science program decreased significantly in regard to the developmental and testable nature of science. The understanding of students who experienced the control-group science program decreased significantly in regard to the creative nature of science. Analyses of covariance indicated that students in the control group possessed a significantly better understanding of the testable nature of science than did students who used the BSCS science program. Implications of these results are related to the constructivist view of learning, the development of curricula designed to facilitate scientific literacy, and future research endeavors.     

Examining learning approaches of science student teachers according to the class level and gender

There are many factors influence the level of students＇ achievement in education. Studies show that one of these factors is ＂learning approach of a student＂. Research findings generally have identified two approaches of learning： deep and surface. When a student uses the deep approach, he/she has an intrinsic interest in subject matter and is interested in ideas and conclusions to understand the subject matter. When a student employs the surface approach, he/she merely memorizes knowledge to pass any exam in school. The aim of this study is to determine learning approaches of science student teachers and to examine the relationships among the variables, such as level of students＇ class and gender. The sample of this study consists of 108 student teachers from the Science Education Program at Department of Primary Science Education in Karadeniz Technical University. Approaches to learning of science student teachers are assessed using the Revised Two-factor Study Process Questionnaire （R-SPQ-2F）, a scale developed by Biggs, et al （2001） consisting of 20 items on a 5 point Likert Scale. According to findings, science student teachers generally have deep learning approaches. Moreover, learning approaches of science student teachers have not changed related to gender.