Science Curriculum Components Favored by Taiwanese Biology Teachers

The new 1–9 curriculum framework in Taiwan provides a remarkable change from previous frameworks in terms of the coverage of content and the powers of teachers. This study employs a modified repertory grid technique to investigate biology teachers' preferences with regard to six curriculum components. One hundred and eighty-five in-service and pre-service biology teachers were asked to determine which science curriculum components they liked and disliked most of all to include in their biology classes. The data show that the rank order of these science curriculum components, from top to bottom, was as follows: application of science, manipulation skills, scientific concepts, social/ethical issues, problem-solving skills, and the history of science. They also showed that pre-service biology teachers, as compared with in-service biology teachers, favored problem-solving skills significantly more than manipulative skills, while in-service biology teachers, as compared with pre-service biology teachers, favored manipulative skills significantly more than problem-solving skills. Some recommendations for ensuring the successful implementation of the Taiwanese 1–9 curriculum framework are also proposed.     

Using videodisk instruction in an elementary science methods course: Remediating science knowledge deficiencies and facilitating science teaching attitudes

Inadequate science knowledge of preservice teachers enrolled in science methods courses not only limits their mastery of effective teaching practices, but also may foster negative attitudes toward science teaching. This study investigated the influence of science knowledge upon attitudes toward science teaching in a one-semester elementary science methods course by embedding a videodisk-based instructional component to remediate knowledge deficiencies. Preservice teachers in the experimental group first learned core concepts in physical and earth science through a series of 24 interactive videodisk lessons and then used the concepts as a foundation for preparing and presenting model science lessons. Results showed that the experimental group overcame their initial knowledge deficiencies by mastering the core concepts presented (mean proportion correct on mastery test = 0.91), with multivariate covariance analysis confirming that the experimentals gain in science knowledge was significantly greater than comparable controls in the parallel science methods sections. Additionally, as a result of mastering the core concepts underlying earth science, preservice teachers using the videodisk instruction also displayed significantly greater confidence in their understanding of science knowledge and more positive attitudes toward science teaching at the elementary levels. Implications for improving elementary science teaching through preservice and in-service training are discussed.     

The development of an alternative in-service programme for Korean science teachers with an emphasis on science-technology-society

This study looks at the effects of a science-technology-society (STS) in-service programme, designed to change teachers' awareness and practice of STS/constructivist approaches, while also focusing on students' understandings and changes of perceptions of the constructivist learning environments. The STS in-service programme was developed to achieve the following features: teacher-oriented, teaching in a social context, emphasis on a 'constructivist' approach, developing STS units and their use in classrooms. A total of 20 middle and high school science teachers participated in the in-service programme in 1998; and three of the middle school teachers were selected to gain information from their implementation of a Reactions of Acids and Bases unit in their respective classrooms. The Science Education Reform Inventory was administered to all the teachers at both the opening and the end of the programme. One hundred twenty-five students of the three teachers experienced about 16 class hours of lessons comprising the new STS unit. At the beginning and the end of the unit, they completed the Constructivist Learning Environment Survey. In order to assess student understanding, teachers administered the creativity test before and after the unit; and the concept acquisition test and the application test after the unit. Students obtained at average 48% of the 35 key concepts and 6.6 additional non-key concepts after the unit was finished. Students made more relevant and creative responses on unfamiliar situations on the post-test than on the pre-test. Through several tasks including a short essay, students showed their abilities to apply various concepts related to acids and bases to daily life situation. It was found that the STS programme improved the teachers' awareness and practices of the science education reforms characterized by STS and constructivism. The middle school science teachers could develop STS units which they implemented in their own classrooms. They could work together in developing units and reflecting on their teachings through video recordings of science classes. They were willing to assess various aspects of learning such as creativity, application and concept acquisition. Students perceived that the classroom environments improved in terms of personal relevance of contents, scientific uncertainty and student participation. The results showed that the STS in-service programme was effective and could be implemented successfully with Korean science teachers.     

Gender theory as a tool for analyzing science teaching

This study examines to what extent experienced teachers are aware of gender issues in the science classroom. It also explores how an introduction to gender theory might alter this awareness. Teachers wrote their reflections about a real classroom situation. They were then asked to analyse the same situation after having read texts that discussed gender theory concepts. The fourteen teachers' understanding about gender and society were challenged. Some teachers were able to analyse the case differently by applying gender theory, others discussed the case on a more general level, while one teacher showed signs of resistance regarding gender theory.     

Cross-age peer tutoring of science in the primary school: influence on scientific language and thinking

The development of deeper understanding and transferable skills in science requires continuous interactive discussion and feedback and extended practice in various contexts for generalisation. In primary schools, these desiderata are difficult to supply through direct teacher instruction, but might be feasible through interactive peer tutoring. This study aimed to evaluate cognitive and affective gains from cross-age peer tutoring for both tutees and tutors in science, using the “paired science” programme. For the first time this programme was used to focus on peer rather than parent tutoring and on junior school rather than early years pupils, and for the first time an objective measure of cognitive gain in science was used. Experimental peer tutees were a whole class (n=32) of seven- to eight-year-olds; tutors a whole class (n=33) of eight- to nine-year-olds in the same school. A parallel composite class of seven- to nine-year-olds (n=24) served as controls for tutees and tutors. A peer tutoring paired science intervention was implemented for two 30-minute sessions per week for eight weeks. Video and observational data indicated implementation integrity was satisfactory. Pre- and post-project assessments of understanding of scientific concepts and keywords of a random sample of tutees, tutors and their respective controls (4×n=10) were conducted. Additionally, the attitudes of all the tutees, tutors and their teachers towards their experiences were explored by post hoc questionnaire. On pre-post assessments of understanding of scientific concepts and keywords, the experimental group made significant gains while the control group made no gains, yielding effect sizes greater than one. Tutees made greater gains than tutors. The attitudes of the paired scientists and their teachers towards their experiences were generally very positive. It was concluded that cross-age peer tutoring of science using the paired science programme offers an effective pedagogical strategy, with both cognitive and affective benefits for both tutors and tutees. Recommendations for future research are made.     

A study of changes in middle school teachers' understanding of selected ideas in science as a function of an in-service program focusing on student preconceptions

This article examines the impact of a specially designed in-service model on teacher understanding of selected science concepts. The underlying idea of the model is to get teachers to restructure their own understanding of a selected science topic by having them study the structure and evolution of their students' ideas on the same topic. Concepts on topics from the life, earth, and physical sciences served as the content focus and middle school Grades 4–9 served as the context for this study. The in-service experience constituting the main treatment in the study occurred in three distinct phases. In the initial phase, participating teachers interviewed several of their own students to find out what kinds of preconceptions students had about a particular topic. The teachers used concept mapping strategies learned in the in-service to facilitate the interviews. Next the teachers teamed with other teachers with similar topic interests and a science expert to evaluate and explore the scientific merit of the student conceptual frameworks and to develop instructional units, including a summative assessment during a summer workshop. Finally, the student ideas were further evaluated and explored as the teachers taught the topics in their classrooms during the fall term. Concept maps were used to study changes in teacher understanding across the phases of the in-service in a repeated-measures design. Analysis of the maps showed significant growth in the number of valid propositions expressed by teachers between the initial and final mappings in all topic groups. But in half of the groups, this long-term growth was interrupted by a noticeable decline in the number of valid propositions expressed. In addition, analysis of individual teacher maps showed distinctive patterns of initial invalid conceptions being replaced by new invalid conceptions in later mappings. The combination of net growth of valid propositions and the patterns of evolving invalid conceptions is discussed in constructivist terms.     

Changing inquiry practices and beliefs: The impact of an inquiry-based professional development programme on beginning and experienced secondary science teachers

This study explores how an inquiry-based demonstration classroom in-service programme impacted the beliefs and practices of 14 secondary science teachers. Both structured and semistructured interviews captured in-service programme participants' beliefs, while in-class observations of participants documented their instructional practices. An analysis of the data revealed that the in-service programme had an impact on the participants, but the impact varied among the six induction and eight experienced teachers: the induction teachers changed their beliefs more than their practices, whereas the experienced teachers demonstrated more change in their practices than their beliefs. Ultimately, the changing belief systems of beginning teachers may have resulted in the limited use of student-centred practices, whereas the established belief systems of experienced participants may have been conducive to studentcentred practices. On the basis of the findings of this study, implications for professional development programmes are discussed.     

SCI-LINK: An innovative project linking research scientists and science teachers

Summary The major purpose of the SCI-LINK Projects was to explore ways of linking research scientists and school science teachers. Not only did the project provide these teachers with a better understanding of scientific environmental research and recent findings, but it allowed them to develop activities and other instructional materials they could use in their classrooms. Leadership skills also were developed as evidenced by the Master Teachers that evolved and the many professional activities in which they have been engaged since the first institutes. Many things were done during the course of the project in order to make the process more efficient. These include assistance to scientists in making their presentations and field trips more effective and helping teachers with their writing and library skills. Also explored were the nature and format for the activities the teachers developed and how they can best be evaluated and disseminated. Positive feedback from teachers and the continued interest of research scientists to participate has led to another project patterned after the model used in the SCI-LINK Project. This second generation project, GLOBE-NET, also supported by the National Science Foundation, involves scientists and teachers in the development of instructional materials on global change. At least some of the efforts to improve science education should include scientists and teachers as partners. The model used in the SCI-LINK Project provides one way of doing so.     

A Conceptual Analysis of Evolutionary Theory for Teacher Education

In this paper we present a schematic overview of the central concepts in evolutionary theory, setting them off against the background of widespread misconceptions about them. Our aim is to provide high school teachers with (1) an overview of those particular concepts that they can expect students to have difficulties with, (2) a comparison of students’ alternative conceptions with the corresponding accepted scientific concepts and (3) some recommendations for teaching these concepts. We aim to improve the learning and teaching of evolution by making the relevant conceptual debates within the fields of history and philosophy of science more accessible to science teachers. We intended this conceptual analysis to be of use as a teaching tool for in-service teachers, as well as biology teachers in training.     

Evolution in the Caribbean Classroom: A critical analysis of the role of biology teachers and science standards in shaping evolution instruction in Belize

A survey of the literature on evolution instruction provides evidence that teachers’ personal views and understandings can shape instructional approaches and content delivered in science classrooms regardless of established science standards. This study is the first to quantify evolutionary worldviews of in-service teachers in the Caribbean, specifically in Belize, an English-speaking nation with a high school system guided by a regional biology syllabus and strict standardized tests. Using the Measure of Acceptance of the Theory of Evolution (MATE) instrument and knowledge test, we investigated (1) the current level of acceptance and understanding of evolution as given by 97% of high school biology teachers in Belize; (2) the factors associated with acceptance and understanding of evolutionary theory. With an average MATE score of 64.4 and a mean knowledge score of 47.9%, Belizean teachers were classified as having both ‘Low Acceptance’ and ‘Low Understanding’ of evolutionary theory. A positive correlation was found between teacher acceptance and understanding of evolution. A review of the Caribbean Secondary Examination Certificate biology syllabus suggests that evolution plays a minimal role in the high school biology classroom. We believe that Belize presents a unique opening for future training on evolution instruction since 57% of the biology teachers self-proclaim to be unprepared to teach evolution. The results of this study have implications for policy, practice and research with teachers’ acceptance, understanding and confidence in teaching evolution serving as important predictors for instructional approaches used in the biology classroom.     

The Implications of the Cognitive Sciences for the Relation Between Religion and Science Education: The Case of Evolutionary Theory

This paper discusses the relationship between religion and science education in the light of the cognitive sciences. We challenge the popular view that science and religion are compatible, a view that suggests that learning and understanding evolutionary theory has no effect on students?? religious beliefs and vice versa. We develop a cognitive perspective on how students manage to reconcile evolutionary theory with their religious beliefs. We underwrite the claim developed by cognitive scientists and anthropologists that religion is natural because it taps into people??s intuitive understanding of the natural world which is constrained by essentialist, teleological and intentional biases. After contrasting the naturalness of religion with the unnaturalness of science, we discuss the difficulties cognitive and developmental scientists have identified in learning and accepting evolutionary theory. We indicate how religious beliefs impede students?? understanding and acceptance of evolutionary theory. We explore a number of options available to students for reconciling an informed understanding of evolutionary theory with their religious beliefs. To conclude, we discuss the implications of our account for science and biology teachers.     

A typology of school science models

Modelling is the essence of thinking and working scientifically. But how do secondary students view science models? Usually as toys or miniatures of real-life objects with few students actually understanding why scientists use multiple models to explain concepts. A conceptual typology of models is presented and explained to help teachers select models that are appropriate to the conceptual ability of their students. The article concludes by recommending that teachers model scientific modelling to their students, encourage the use of multiple models in science lessons, progressively introduce sophisticated models, systematically present in-class models using the Focus, Action and Reflection (FAR) guide and socially negotiate all model meanings.     

Teachers' understanding and the use of the learning cycle

This study examined the relationships that exist between high school science teachers' understanding of the Piagetian developmental model of intelligence, its inherent teaching procedure—the learning cycle—and classroom teaching practices. The teachers observed in this study had expressed dissatisfaction with the teaching methods they used, and, subsequently, attended a National Science Foundation sponsored in-service program designed to examine laboratory-centered science curricula and the educational and scientific theories upon which the curricula were based. The teachers who exhibited a sound understanding of the Piagetian model of intelligence and the learning cycle were more likely to effectively implement learning cycle curricula. They were able to successfully integrate their students' laboratory experiences with class discussions to construct science concepts. The teachers who exhibited misunderstandings of the Piagetian developmental model of intelligence and the learning cycle also engaged their students in laboratory activities, but these activities were weakly related to learning cycles. For example, the data gathered by their students were typically not used in class discussions to construct science concepts. Therefore, these teachers apparently did not discern the necessity of using the data and experiences from laboratory activities as the impetus for science concept attainment. Additional results comparing degrees of understanding, teaching behaviors and questioning strategies are discussed.     

A comparison of preservice and in-service earth and space science teachers' general mental abilities,content knowledge,and problem-solving skills

The purpose of this study was to compare in-service and preservice earth and space science teachers on their general mental abilities, their content knowledge or declarative knowledge of earth and space sciences, the Gagnean levels of their content knowledge or declarative knowledge, and the procedural knowledge used in solving earth and space science problems. This study used a contrast-group design to compare in-service (n = 30) and preservice (n = 30) earth and space science teachers. The in-service earth science teachers (a) bring more declarative knowledge to the problem-solving situation, (b) use fewer steps while problem solving, (c) generate more subroutines and alternate hypotheses, and (d) possess different structural knowledge than do preservice earth science teachers. Findings from this study support Norman's theory of learning that experts (in-service teachers) function at the tuning mode of learning, whereas novices (preservice teachers) function in an accreting or structuring mode. In-service earth science teachers exhibited smoothness, automaticity, and decreased mental effort not exhibited by preservice earth and space science teachers.     

Teacher design in teams as a professional development arrangement for developing technology integration knowledge and skills of science teachers in Tanzania

This study investigated the impact of teacher design teams as a professional development arrangement for developing technology integration knowledge and skills among in-service science teachers. The study was conducted at a secondary school in Tanzania, where 12 in-service science teachers participated in a workshop about technology integration in science teaching and worked in design teams to prepare technology-enhanced biology, chemistry and physics lessons. Through collaboration in design teams, teachers were able to make science animations using PowerPoint and record videos to use in their teaching. The designed lessons were taught in the classroom and reflected upon thereafter by all teachers. In order to determine the change in teachers’ technology integration knowledge and skills, data were collected before and after the professional development arrangement by using questionnaire, interview and observation data. Focus group discussion and reflection questionnaire data were used to assess teachers’ experience of working in design teams at the end of the professional development arrangement. Findings showed an increase in teachers’ technology integration knowledge and skills between pre- and post-measurements. Collaboration in design teams had the potential for teachers to share knowledge, skills, experience and challenges related to technology-enhanced teaching.     

Effects of a professional development program on science teacher knowledge and practice,and student understanding of interdisciplinary science concepts

Situated in the context of an in-service professional development (PD) program focused on Interdisciplinary Science Inquiry, this quantitative study tests the validity of and further explores the theoretical model adapted from Desimone's (2009), Educational Researcher, 38, 181–199 conceptual framework on effectiveness of PD. The participants include 204 teachers and 5,581 students within 12 local public schools from 2012 to 2016. The multilevel models indicate that PD participation, school-, and teacher-level factors influence teacher pedagogical content knowledge and inquiry instruction in different ways. Furthermore, the inquiry instruction significantly relates student understanding of interdisciplinary science concepts (ISCs) through a few mediators. Therefore, this study reinforces calls to provide teachers with high quality PD and contributes to current knowledge base of the mechanisms of how inquiry instruction influences students' understanding of ISCs.     

Student-centred and teacher-centred science classrooms as visualized by science teachers and their supervisors

The current study examined how in-service science teachers and their supervisors visualized student-centred and teacher-centred science classrooms. The grade levels covered in the study were grades 1–12. We used a modified Draw-A-Science-Teacher-Test Checklist (DASTT-C) tool. The findings revealed that both groups viewed science teaching in schools to be more teacher-centred. When asked to sketch a “student-centred classroom”, science supervisors were able to produce better drawings that reflected a student-centred teaching environment compared to science teachers. On the other hand, there was no significant difference in terms of science teachers’ gender, teaching experience and grade level.     

The evolution of an approach for using analogies in teaching and learning science

An important contribution to effective teaching and learning can be made by teachers' understanding of the central topics in each subject area and knowing how to transform their content knowledge into knowledge for teaching. One aspect of this knowledge is the use of analogies which can effectively communicate concepts to students of particular backgrounds and prerequisite knowledge. Indeed, analogies are considered to be an important component in the repertoire of effective teachers. However, research about teachers' use of analogies in science lessons provides little guidance about the optimum approaches that may be taken by preservice teachers, novice teachers, experienced teachers or reluctant analogy users. This paper describes the evolution of an approach for using analogies in science teaching that addresses both findings from the research literature and recognises the needs of practising teachers. Specializations: learning and teaching science concepts, technology education.     

Changes in Primary Teachers' Science Knowledge and Understanding During a Two Year In-service Programme

A test to assess teachers' science knowledge and understanding was developed to monitor change over two years of a primary science in-service programme in 31 schools. Two cohorts took a six-month core course on 'Developing and Assessing Investigations'. The 70 teachers' science understanding was measured by multi-choice and open-ended questions on electricity; melting, dissolving and evaporation; forces; and investigations. Three sub-scales were developed that provide good discrimination. Despite the moves to improve primary teachers' subject knowledge, many still have the typical misconceptions that have been identified in the past. Teachers also had a poor understanding of variables and their control. The analysis of the results has enabled a pattern of development to be identified. While the in-service programme enabled the majority of teachers to progress through these stages, this progress did not always take the teachers to the scientific stage. It was clear that teachers need a thorough understanding of interrelated concepts beyond the requirements of the children's National Curriculum, as without it they may develop misconceptions that might interfere with children's understanding. This indicates that in-service education needs to be sustained over a considerable length of time.