The Relationship between Understanding of the Nature of Science and Practice: The influence of teachers’ beliefs about education,teaching and learning

This paper reports the relationship between four English primary teachers’ understanding of the nature of science and their practice. Action research was included as a major part of the research design in order to explore the dialectical interplay between various factors at work in the teachers’ practice. The influences of both tacit and espoused understandings of the nature of science were considered alongside the teachers’ beliefs about education, teaching, and learning. These beliefs were found to be the determining factor in the teachers’ decisions about classroom strategies. In arguing for a dialectical perspective on teachers’ practice, the research suggests that teachers’ espoused understanding of the nature of science may also be at least partially formed by the influence of these beliefs, raising the possibility that influence may run from teaching to theoretical understanding and not the other way round.     

Perspectives on learning to teach science: insights and dilemmas from a collaborative practicum project

In this article we discuss the theoretical and practical rationale for establishing a collaborative science practicum project and report on the findings of the first two years. The project was designed to strengthen the communication links among the school‐based educators, the pre‐service teachers, and the university‐based educators, in order to address the seemingly intractable problems associated with initiating new science teachers into the varied social practices of the teaching profession. Our findings are organized and discussed in the form of three dilemmas (Cuban 1992). These dilemmas are associated with the difficulties the pre‐service teachers had in connecting the propositional knowledge presented in the university setting with the procedural knowledge required in the school setting, and the lack of familiarity by the university and school‐based educators of each other's practice setting. We describe results that resonate with similar issues reported in other collaborative projects, and propose an alternative approach for preparing science teachers. This approach is based on conceptualizing learning to teach as a cognitive apprenticeship (Hennessy 1993) which prepares pre‐service teachers to enter the ‘community of practice’ called teaching. We argue that the success of such an approach requires the development of a collaborative community in which all participants engage in meaningful and supportive discourse concerning what, when and how science is taught in the classroom.     

The stepping stones of learning and evaluation

Based on the teachers’ lectures and evaluations we elaborate on a model of the aspects of learning. Inside the framework of this model three ways for solving a given problem relating to the previous teaching are presented.

We describe and analyse a method which is useful in selecting an evaluation task adapted to intended objectives, helps in the interpretation of the students’ performances and acts as a guide to the possible inferences about what the students acquire.     

The Effects of Incorporating Web‐assisted Learning with Team Teaching in Seventh‐grade Science Classes

Due to the implementation of a 9‐year integrated curriculum scheme in Taiwan, research on team teaching and web‐based technology appears to be urgent. The purpose of this study was incorporated web‐assisted learning with team teaching in seventh‐grade science classes. The specific research question concerned student performance and attitudes about the teaching method. Two certified science teachers and four classes of the seventh graders participated in this study. It used a mixed methods design, incorporating both quantitative and qualitative techniques. The main data included students’ scores, questionnaires, teachers’ self‐reflections, and the researcher’s interviews with teachers. The results showed that the average final examination scores of students experiencing the experimental teaching method were higher than that of those receiving traditional teaching. The two teaching methods showed significant difference in respect of students’ achievement. The research had limitations because of students’ abilities of data collection, computer use, and discussion, but more than one‐half of the students preferred the experimental method to traditional teaching. However, team teachers would encounter the problems of technology ability, time constraints, and entrance examination pressure.     

Using Data Comparison and Interpretation to Develop Procedural Understandings in the Primary Classroom: Case study evidence from action research

The development of a science education that includes a focus upon the nature of science suggests the need for “pedagogic tools” that can be used to engage children with the procedural understandings that are central to the scientific approach to enquiry. This paper reports on a collaborative action research project that focused on the use of secondary data as just such a “tool” for stimulating engagement with procedural understandings among primary school children. It argues that the comparative analysis of secondary and investigative data can provide a basis for such engagement. However, such comparative analysis will only mirror the collaborative nature of the scientific enterprise where children have guided opportunities to discuss their understanding of the issues revealed by the comparisons. The research suggests that children work best with this data if the scientific approach to enquiry is contextualized through connection with the knowledge claims made in science.     

Evaluating Secondary Students’ Scientific Reasoning in Genetics Using a Two‐Tier Diagnostic Instrument

While genetics has remained as one key topic in school science, it continues to be conceptually and linguistically difficult for students with the concomitant debates as to what should be taught in the age of biotechnology. This article documents the development and implementation of a two‐tier multiple‐choice instrument for diagnosing grades 10 and 12 students’ understanding of genetics in terms of reasoning. The pretest and posttest forms of the diagnostic instrument were used alongside other methods in evaluating students’ understanding of genetics in a case‐based qualitative study on teaching and learning with multiple representations in three Western Australian secondary schools. Previous studies have shown that a two‐tier diagnostic instrument is useful in probing students’ understanding or misunderstanding of scientific concepts and ideas. The diagnostic instrument in this study was designed and then progressively refined, improved, and implemented to evaluate student understanding of genetics in three case schools. The final version of the instrument had Cronbach’s alpha reliability of 0.75 and 0.64, respectively, for its pretest and the posttest forms when it was administered to a group of grade 12 students (n = 17). This two‐tier diagnostic instrument complemented other qualitative data collection methods in this research in generating a more holistic picture of student conceptual learning of genetics in terms of scientific reasoning. Implications of the findings of this study using the diagnostic instrument are discussed.     

‘Does it answer the question or is it French fries?’: an exploration of language supports for scientific argumentation

ABSTRACT

Reform initiatives around the world are reconceptualising science education by stressing student engagement in science practices. Yet, science practices are language-intensive, requiring students to have strong receptive and productive language proficiencies. It is critical to address these rigorous language demands to ensure equitable learning opportunities for all students, including English language learners (ELLs). Little research has examined how to specifically support ELL students’ engagement in science practices, such as argumentation. Using case-study methodology, we examined one middle school science teacher's instructional strategies as she taught an argumentation-focused curriculum in a self-contained ELL classroom. Findings revealed that three trends characterized the teacher’s language supports for the structural and dialogic components of argumentation: (1) more language supports focused on argument structure, (2) dialogic interactions were most often facilitated by productive language supports, and (3) some language supports offered a rationale for argumentation. Findings suggest a need to identify and develop supports for the dialogic aspects of argumentation. Furthermore, engaging students in argumentation through productive language functions could be leveraged to support dialogic interactions. Lastly, our work points to the need for language supports that make the rationale for argumentation explicit since such transparency could further increase access for all students.     

Exploring Secondary Science Teachers' Perceptions on the Goals of Earth Science Education in Taiwan

The educational reform movement since the 1990s has led the secondary earth science curriculum in Taiwan into a stage of reshaping. The present study investigated secondary earth science teachers' perceptions on the Goals of Earth Science Education (GESE). The GESE should express the statements of philosophy and purpose toward which educators direct their attention, and provide the visions or broad aims that earth science education is designed to achieve. Based on this rationale, the purpose of this study was to explore teachers' perceptions on the GESE at secondary school level (Grades 7–12) in Taiwan. A national survey of 1,000 earth science teachers was conducted in May 2004, with a response rate of 70.2%. The results revealed that ‘Students acquire basic earth science concepts’ is the most important GESE both in teachers' preferred goal and their actual teaching practice in the secondary earth science education; that there is a major gap between teachers' preferred and actual GESE in terms of ‘Preparing students for the entrance examinations’; and that the differences between teachers' preferred and actual GESE are contingent on the teachers' age, the school size, and the teacher education background of teachers.     

Education through Fiction: Acquiring opinion‐forming skills in the context of genomics

The present study examined the outcomes of a newly designed four‐lesson science module on opinion‐forming in the context of genomics in upper secondary education. The lesson plan aims to foster 16‐year‐old students’ opinion‐forming skills in the context of genomics and to test the effect of the use of fiction in the module. The basic hypothesis tested in this study is whether fiction stimulates students to develop opinions with regard to socio‐scientific issues. A quasi‐experimental pre‐test and post‐test design was used, involving two treatment groups and one control group. One of the experimental groups received a science module incorporating movie clips (i.e., the movie group). The other experimental group received the same science module, but only news report clips were used (i.e., the news report group). Prior to and after the module, 266 secondary school students completed a questionnaire to test their opinion‐forming skills. The results demonstrate that the science module had a significant positive effect on students’ opinion‐forming skills and that the movie group improved their skills more compared with the news report group. It may be concluded that the use of fiction—to be more specific, movie clips about genomics extracted from feature films—to introduce a socio‐scientific issue in the classroom stimulates students to develop their opinion‐forming skills.     

Girls' Groups and Boys' Groups at a Municipal Technology Centre

This article describes the Swedish initiative of municipal technology centres from a gender point of view. These centres provide after‐school technology education for children aged 6–16. By means of an ethnographic study, the effects of the use of single‐sex groups in increasing the interest of girls and boys in technical activities have been studied at one of the centres. The importance of the gender of the teacher relative to the gender of the pupils is also considered. The results show that single‐sex groups meant different things to boys and girls, and that the teachers’ way of “doing” femininity and masculinity, respectively, in the different groups was of some importance. The results indicate that single‐sex groups alone do not break down gender barriers. However, there are lessons to be learnt from a leisure‐time activity that provides a different setting from that of single‐sex science education in ordinary schooling