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1.

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.  相似文献   

2.
This professional development program was designed to prepare science teachers to be more student-centered and to implement newer goals for science instruction. These goals are to improve science teaching in ways that promote broader and longer-lasting learning. Secondary school science teachers in Korea are expected to follow a rigid national curriculum with large classes - often with more than 50 students. This study focuses on feedback and follow-up interaction with teacher participants who were enrolled in a month-long workshop in the U.S. before returning to Korea to implement the new ideas. Assistance was offered to help teachers develop teaching modules which were more constructivist while also assisting with assessment efforts that provided further evidence of use of the new teaching practices and their effect on student learning. Student mastery of concepts and improvement in student creativity were two aspects of the summer workshop experiences and these were evaluated to illustrate workshop effects on teacher participants in their actual classrooms. An erratum to this article is available at .  相似文献   

3.
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.  相似文献   

4.
In many countries around the world, there has been an increasing emphasis on improving science education. Recent reform efforts in the USA call for teachers to integrate scientific and engineering practices into science teaching; for example, science teachers are asked to provide learning experiences for students that apply crosscutting concepts (e.g., patterns, scale) and increase understanding of disciplinary core ideas (e.g., physical science, earth science). Engineering practices and engineering design are essential elements of this new vision of science teaching and learning. This paper presents a research study that evaluates the effects of an engineering design-based science curriculum on student learning and attitudes. Three middle school life science teachers and 275 seventh grade students participated in the study. Content assessments and attitude surveys were administered before and after the implementation of the curriculum unit. Statewide mathematics test proficiency scores were included in the data analysis as well. Results provide evidence of the positive effects of implementing the engineering design-based science unit on student attitudes and learning.  相似文献   

5.
There are many factors that shape students’ attitudes toward science, technology, engineering and mathematics. This exploratory study of high school students examined the effect of enriching chemistry with math on chemistry students’ attitudes toward math and careers involving math. To measure student attitudes, a survey was administered before and after the 18-week chemistry class; results from the chemistry class were compared to survey results from students in an elective science class that did not emphasize mathematics. At the end of the 18-week period, only the chemistry students exhibited more positive views toward their abilities in mathematics and careers that involve mathematics, as compared to their views at the outset of the course. To ensure that chemistry mastery was not hindered by the additional emphasis on math, and that mastery on state end-of-course examinations reflected knowledge acquired during the math-intensive chemistry class, a chemistry progress test was administered at the start and end of the term. This exploratory study suggests that emphasizing mathematical approaches in chemistry may positively influence attitudes toward math in general, as well as foster mastery of chemistry content.  相似文献   

6.
The National Science Education Standards emphasize teaching unifying concepts and processes such as basic functions of living organisms, the living environment, and scale (NRC 2011). Scale includes understanding that different characteristics, properties, or relationships within a system might change as its dimensions are increased or decreased (NRC 2011). One such relationship involves surface area to volume which is a pervasive concept that can be found throughout different sciences. This concept is important for students to not only understand the association of the two, but to also be able to apply this relationship in science contexts. The purpose of this study is to investigate the factors that influence the understanding surface area to volume relationships. This study examined middle school students’, high school students’, and science teachers’ logical thinking skills (including proportional reasoning), visual-spatial skills, and understandings of surface area to volume relationships. Regression results indicated that participants’ reasoning abilities and components of visual-spatial skills could be possible predictors for one’s ability to understand surface area to volume relationships. Implications for teaching scale concepts such as surface area to volume relationships in the science classroom are discussed.  相似文献   

7.
Conclusion The present study provided insights regarding the interactions that take place in collaborative science laboratory and regarding the outcome of such interactions. Science laboratory experiences structured by teachers have been criticized for allowing very little, if any, meaningful learning. However, this study showed that even structured laboratory experiments can provide insightful experience for students when conducted in a group setting that demanded interactive participation from all its members. The findings of the present study underscored the synergistic and supportive nature of collaborative groups. Here, students patiently repeated explanations to support the meaning construction on the part of their slower peers and elaborated their own understanding in the process; groups negotiated the meaning of observations and the corresponding theoretical explanations; students developed and practiced a range of social skills necessary in today’s workplace; and off-task behavior was thwarted by the group members motivated to work toward understanding rather than simply generating answers for task completion. The current findings suggest an increased use of collaborative learning environments for the teaching of science to elementary education majors. Some teachers have already made use of such settings in their laboratory teaching. However, collaborative learning should not be limited to the laboratory only, but be extended to more traditionally structured classes. The effects of such a switch in activity structures, increased quality of peer interaction, mastery of subject matter content, and decreased anxiety levels could well lead to better attitudes toward science among preservice elementary school teachers and eventually among their own students.  相似文献   

8.
This research focuses on use of a triadic teaching approach in a science–technology–society (STS) course designed for future science teachers for middle schools in Turkey. Forty-three pre-service science teachers were enrolled in a semester-long course organized around issues students identified and used throughout the semester. The triadic teaching approach includes library-online searches that lead the students to design and conduct investigations, to carrying out mini-scientific symposia, and to preparing and conducting poster presentations open to the entire student body and faculty. The results of a 30-item Likert scale, administered to the students as a pretest and a posttest, indicated that there were significant increases in positive attitudes towards STS issues from the beginning to the end of the study. Individual interviews were also conducted with the students to determine the individual effects of each component of the triadic teaching approach on their attitudes towards STS issues. All aspects of the new approach provided significant contributions to the development of more positive attitudes among the students towards STS via interviews and on all sub-scales of a survey administered that include: (1) pupil interest in STS issues; (2) teacher interest in STS issues; (3) general perceptions regarding importance of STS issues.
Osman Nafiz KayaEmail:
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9.
This article presents the perspectives of science and mathematics teachers on their use of information and communication technology (ICT) in teaching and learning in Tanzania. The findings show that few teachers used computers for teaching and learning purposes while majority of them used computers for administrative purposes. Additionally, teachers were found to have limited confidence in using technology to facilitate specific concepts or skills, to support creativity, and to support students to learn complex concepts. Therefore, it is suggested that schools explore strategies ICT integration strategies that focus more on making a shift from teaching technology or using technology for administrative purpose to appropriate pedagogical uses that could enhance student learning.  相似文献   

10.
The semantic meaning assigned to concepts associated with science-technology-society (STS) education, the percentage of science course time allotted to STS instruction, the categories of STS issues infused into sciences courses, and the instructional procedures used to do so, were examined among a sample of 65 exemplary secondary-level science teachers. The teachers were volunteers from the 87 science teachers from a Midwestern state locally nominated for the Presidential Awards Program. Data were collected using the Science Teaching Issue Opinionnaire (STIO) and a questionnaire, both developed and validated by the investigator. The STIO used a semantic differential format; it was composed of 23 STS education affiliated concepts (e.g., science; technology; students' need to understand the interrelationships among science, technology, and society; my ability to teach …), each followed by 13 seven-point bipolar adjective scales (alpha reliability = 0.97). The instruments were distributed and returned by mail. The exemplary science teachers were found to hold positive opinions of (1) science, (2) technology, (3) their understanding of science, and (4) their ability to teach science. The teachers expressed slightly positive opinions of (1) students' understanding of STS, (2) students' need to understand STS, (3) their own understanding of STS interrelationships, and (4) their ability to teach STS. The teachers suggested that 15% of secondary science course instructional time be dedicated to STS, but did not appear to dedicate near that amount of time to STS. “Pollution” headed a brief and rather predictable list of STS issues infused into science courses. On average a teacher infused 2.5 STS issues into a science course. The discussion, lecture, and a combination of these dominated the list of 35 instructional procedures which are not unique to or necessarily appropriate for STS instruction.  相似文献   

11.
The use of STS vignettes with class discussions is a popular way for science teachers to integrate STS in science courses. Two studies were conducted to test the effects of infusing short STS vignettes with periodic class discussions into the genetics unit of high school biology, on students' awareness of current STS issues, the importance students assign to current STS issues, and their achievement in the genetics unit. The nonequivalent control-group quasiexperimental design was employed in each study, with the frequency with which the vignettes and discussions were used during a six-week period differing across them. In neither study were the control groups exposed to the STS vignettes and discussions. The data did not allow the three null hypotheses to be rejected in either experiment. Recommendations are made on the use of STS vignettes by science teachers, and for further research.  相似文献   

12.
The four standards for professional development of teachers of science from the National Science Education Standards (NRC, 1996) provided a frame for reflection upon ways in which prospective teachers engaged in research in my courses on methods of teaching science. Students learned both science content and science pedagogy by inquiry. An extended research project helped students to integrate knowledge of science, learning, pedagogy, and students, and to apply that to teaching science. Students built knowledge, skills, and attitudes for lifelong learning by participating in a research festival and presenting at conferences. I designed this science-teaching methods course in the context of a teacher education program that is attempting to implement reform approaches to instruction. © 1998 John Wiley & Sons, Inc. J Res Sci Teach 35: 791–809, 1998.  相似文献   

13.
This qualitative video study explores how two elementary school teachers taught for conceptual understanding throughout different phases of science inquiry. The teachers implemented teaching materials with a focus on learning science key concepts through the development of word knowledge. A framework for word knowledge was applied to examine the students’ level of word knowledge manifested in their talk. In this framework, highly developed knowledge of a word is conceptual knowledge. This includes understanding how the word is situated within a network of other words and ideas. The results suggest that students’ level of word knowledge develops toward conceptual knowledge when the students are required to apply the key concepts in their talk throughout all phases of inquiry. When the students become familiar with the key concepts through the initial inquiry activities, the students use the concepts as tools for furthering their conceptual understanding when they discuss their ideas and findings. However, conceptual understanding is not promoted when teachers do the talking for the students, rephrasing their responses into the correct answer or neglecting to address the students’ everyday perceptions of scientific phenomena.  相似文献   

14.
A learning unit in earth science was taught to high school students, using a jigsaw-group mastery learning approach. The sample consisted of 73 students in the experimental group and 47 students who learned the topic in an individualized mastery learning approach. The study lasted 5 weeks. Pretests and posttests on academic achievement and affective outcomes were administered. Data were treated with an analysis of covariance. The results show that students of the experimental group achieved significantly higher on academic outcomes, both normative and objective scores. On the creative essay test, the differences in number of ideas and total essay score were not significant between the groups, although the mean scores for number of words were higher for the individualized mastery learning group. On the affective domain, jigsaw-group mastery learning students scored significantly higher on self-esteem, number of friends, and involvement in the classroom. No differences were found in cohesiveness, cooperation, competition, and attitudes toward the subject learned. The results are discussed through the evaluation and comparison of the two methods of instruction used in this study. The cooperative learning movement began in junior high schools as part of the desegregation process, aiming at facilitating positive ethnic relations and increasing academic achievement and social skills among diverse students (Aronson, Stephan, Sikes, Blaney, & Snapp, 1978; Sharan & Hertz-Lazarowitz, 1980; Slavin, 1980). However, elementary teachers quickly recognized the potential of cooperative methods, and such methods were adopted freely in elementary schools before becoming widespread on the junior and senior high level. It has only been during the past few years that application of cooperative learning has been studied extensively with these older students. Cooperative learning methods generally involve heterogeneous groups working together on tasks that are deliberately structured to provide specific assignments and individual contributions from each group member. Cognitive as well as social benefits are expected, as students clarify their own understanding and share their insights and ideas with each other as they interact within the group (Deutsch, 1949). Experiments in the science laboratory have always required students to work in groups of two to four, due to the constraints of experimental processes and limited equipment and sup- plies. Thus, science courses are a natural curriculum area for examining cooperative learning practices. Now that cooperative methods are being refined to develop particular capabilities in the students, science teachers need to examine ways of structuring specific tasks to achieve the academic, affective, and socialization goals for their students. Although most of the studies of cooperative learning in the high school science classroom have centered around the cognitive outcomes of achievement testing and process skills, affective and social outcomes are also significant with students of this age. But few studies in science classes have attempted to assess such aspects of students' progress. As part of a previous revision, the science faculty at the high school where this study was conducted developed an exemplary individualized mastery learning (1ML) program for teaching science. This program seemed to alleviate the severe motivational problems and the extreme individual differences among the students in this rural/bhe-collar community. Students learned to work independently on their science studies. They had almost no lectures and few large group activities. As they worked through their assignments, however, they were free to interdct with other students. Looking in on a typical class, one would see several clusters of two or three students working together, sometimes tutoring each other, sometimes just talking through an assignment. Yet at least half of the class members would be working all alone. The importance of the overall social setting in the classroom as it relates to learning (Bruner, 1986, p. 86) and the central function of social interaction as learning occurs (Vygotsky, 1978, p. 106) seemed to have been ignored. Therefore, group mastery learning (GML), a cooperative learning tech- nique, was suggested as an antithesis to IML for teaching science over short periods. The cooperative mode of instruction considers learning as a cognitive as well as a social process, where students interact with each other as well as the teacher. To bring the social dimension back to science classrooms, the researchers chose to imple- ment GML in Grades 1 I and 12. The goal of the study was to investigate the GML's impact of the method on the individual student's academic achievement, creativity, self-esteem, and number of friends and on the overall learning environment of the classrooms. The researchers were also concerned with the students' attitudes toward earth science, the course being taught at the time of the experiment. Both cognitive and affective outcomes for students who participated in the cooperative GML approach were compared with outcomes for students who studied the same topic in an IML approach. The study addressed a number of questions related to academic and nonacademic outcomes of the two methods of study. First, it sought to determine whether academic achievement of the students taught in the cooperative GML mode would be different from the achievement of students who learned in an individualized method. Second, it sought to determine whether gains or losses would be seen in nonacademic outcomes, such as classroom learning environment, social relations, and students' self-esteem experienced by the students. The results of this study may support more use of cooperative learning in high school science.  相似文献   

15.
This article is a report of elementary school teachers' beliefs about and uses of text material in science. Survey results from 522 K-8 teachers from 299 schools in the United States, Puerto Rico and the Virgin Islands were analyzed along three dimensions: teacher attitudes toward teaching of reading in science; teacher beliefs and understanding about models of reading, factors influencing science reading and reading skills; and teacher use of various teaching strategies. Results suggest that teachers do not see reading science as different from any other narrative material. And though most agreed to the importance of having students do activities to support and enhance the use of text material, responses suggest that covering topics is still a concern for most elementary teachers.  相似文献   

16.
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17.
STS (Science, Technology, Society) approaches to science education challenge teachers’ conceptions of the discipline and of pedagogy. This paper deals with the change in teacher thinking necessary to cope with integrated science and STS education. It involves reflection on the moral basis of the subject matter and its teaching. Based on interviews with Canadian and German teachers the authors note that while teacher thinking is rooted in the discipline, and the discipline is the context for teacher reflection about STS approaches, it is also a source of constraint. This constraint raises concerns about the possibility of STS science. The authors consider how integration might enable teachers to overcome the elementarization of school knowledge and work towards helping students cope with the problems of real life.  相似文献   

18.
This study investigated the effects of students’ prior science knowledge and online learning approaches (social and individual) on their learning with regard to three topics: science concepts, inquiry, and argumentation. Two science teachers and 118 students from 4 eighth-grade science classes were invited to participate in this research. Students in each class were divided into three groups according to their level of prior science knowledge; they then took either our social- or individual-based online science learning program. The results show that students in the social online argumentation group performed better in argumentation and online argumentation learning. Qualitative analysis indicated that the students’ social interactions benefited the co-construction of sound arguments and the accurate understanding of science concepts. In constructing arguments, students in the individual online argumentation group were limited to knowledge recall and self-reflection. High prior-knowledge students significantly outperformed low prior-knowledge students in all three aspects of science learning. However, the difference in inquiry and argumentation performance between low and high prior-knowledge students decreased with the progression of online learning topics.  相似文献   

19.
Most middle and high school students struggle with reading and writing in science. This may be because science teachers are reluctant to teach literacy in science class. New standards now require a shift in the way science teachers develop students’ literacy in science. This survey study examined the extent to which science teachers report implementing science literacy practices from the Common Core Literacy in Science and Technical Subjects and the Next Generation Science Standards with their students. A survey detailing these practices was emailed to all secondary science teachers (N = 2519) in one northeastern state and 14% of them (n = 343) responded. Practices that aligned more closely with disciplinary literacy skills and strategies were implemented more often when compared to the practices aligned with intermediate literacy skills and strategies. Since the development and intermediate skills are important to support students’ literacy progression from foundational to disciplinary, secondary science teachers may not be providing enough support for their students to be competently literate in science, in a fundamental literacy sense. This, in turn, impacts students’ ability to use fundamental literacy skills toward knowledge-building in science, achieving a derived sense of science literacy.  相似文献   

20.
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.  相似文献   

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