国外关于科学本质教学的研究

促进学生对科学本质的理解已成为科学教育的根本目标之一.科学本质阐明了科学所具有的基本特征,是人们对科学本质属性的正确认识.本文对国外关于科学本质的内涵、科学本质的教学内容与学习范畴、融入科学史的科学本质教学、科学探究及科学本质教学的研究等作了概述.     

科学本质教育的课堂教学方法初探

帮助学生发展较全面而准确的科学本质观是科学教育的根本目标之一,教师应该能够应用一些课堂教学方法,引导学生认识科学的本质。有关科学本质的课堂教学方法主要有科学探究法和科学史法。除此以外,教师还可以尝试应用以下方式:利用科学故事;利用科学史中的科学失误;利用科学史的问题。     

美国中学科学教科书中科学本质观的实证研究——以《科学入门》为例

科学本质教学是科学教育的重要目标。科学教科书作为科学教学的核心课程资源,对教师的课堂教学和学生科学本质观的形成发挥着重要作用。本文应用内容分析法对美国《科学入门》教科书中科学本质观的分析表明,该教科书呈现了较为完整的科学本质观;突出科学的实证性、暂定性与发展性;为科学划界,区分科学与非科学;显性呈现关于科学与技术的关系;注重体现社会文化对科学的影响;所呈现的科学观是实践优位的。该教科书呈现的科学本质观能够为我国理科教科书编写提供多方面的启示。     

Primary school students’ perspectives on questions that bridge science and religion: Findings from a survey study in England

This article describes the development of a questionnaire to discover primary school students’ perceptions of science, religion and the relationships between them on a range of topics that are known as Big Questions. The questionnaire was administered in 16 primary schools in England with over 750 students aged 10–11. The findings indicate that students in this age group have begun to consider how science and religion relate and that while there is a diversity of positions, a significant proportion perceived science and religion to conflict. Analysis of responses also indicated that primary school students’ epistemic insight was limited in relation to their understanding of the nature of science and, in particular, the idea that science has limitations. The basis and potential consequences of such views are considered and recommendations for teaching practice are presented, together with ideas for future research. It is anticipated that the study will inform teachers and curriculum planners developing approaches and guidance materials in science and religious education.     

The Effect of Guided-Inquiry Instruction on 6th Grade Turkish Students' Achievement,Science Process Skills,and Attitudes Toward Science

The purpose of this study is to investigate the effectiveness of guided-inquiry approach in science classes over existing science and technology curriculum in developing content-based science achievement, science process skills, and attitude toward science of grade level 6 students in Turkey. Non-equivalent control group quasi-experimental design was used to investigate the treatment effect. There were 162 students in the experimental group and 142 students in the control group. Both the experimental and control group students took the Achievement Test in Reproduction, Development, and Growth in Living Things (RDGLT), Science Process Skills Test, and Attitudes Toward Science Questionnaire, as pre-test and post-test. Repeated analysis of variance design was used in analyzing the data. Both the experimental and control group students were taught in RDGLT units for 22 class hours. The results indicated the positive effect of guided-inquiry approach on the Turkish students' cognitive as well as affective characteristics. The guided inquiry enhanced the experimental group students' understandings of the science concepts as well as the inquiry skills more than the control group students. Similarly, the experimental group students improved their attitudes toward science more than the control group students as a result of treatment. The guided inquiry seems a transition between traditional teaching method and student-centred activities in the Turkish schools.     

Effects of a Collaborative Science Intervention on High Achieving Students’ Learning Anxiety and Attitudes toward Science

This study investigated the effects of a collaborative science intervention on high achieving students’ learning anxiety and attitudes toward science. Thirty‐seven eighth‐grade high achieving students (16 boys and 21 girls) were selected as an experimental group who joined a 20‐week collaborative science intervention, which integrated and utilized an innovative teaching strategy. Fifty‐eight eighth‐grade high achieving students were selected as the comparison group. The Secondary School Student Questionnaire was conducted to measure all participants’ learning anxiety and attitudes toward science. In addition, 12 target students from the experimental group (i.e., six active and six passive students) were recruited for weekly classroom observations and follow‐up interviews during the intervention. Both quantitative and qualitative findings revealed that experimental group students experienced significant impact as seen through increased attitudes and decreased anxiety of learning science. Implications for practice and research are provided.     

科学的本质与学生科学本质观的培养

开展科学的本质教育是培养学生科学素养的核心内容。正确的科学本质观建立在科学知识、科学方法以及科学情感态度与价值观的形成基础之上。通过实施新的科学教育理念,改革科学课程的教学内容,转变教师教学策略,使学习科学成为学生主动探究的过程,必将进一步引导学生加深对科学本质的认识和理解,促进学生科学本质观的形成与发展。     

Should Science Teaching Involve the History of Science? An Assessment of Kuhn’s View

Thomas Kuhn draws the distinction between textbook history of science and history of science proper. The question addressed in the paper is whether Kuhn recommends the inclusion of distortive textbook history in science education. It is argued, pace Fuller, that Kuhn does not make normative suggestions. He does not urge the teaching of bad history and he does not aim to deceive the scientists. He highlights the significance of the retrospective history of the textbooks as a condition for the practice of science. If science is to be seen as a practice and not as a set of propositions, then textbook history is instrumental in establishing and expanding the new paradigm. The other kind of history, the history of science proper, can only be taught as part of the students’ general education and not as part of science education.     

Promoting preservice chemistry teachers' understanding about the nature of science through history

The purpose of this quasi‐experimental study was to document the benefits of teaching chemistry through history. The experimental group consisted of seniors enrolled in a teacher preparation program in which they learned how to teach chemistry through the history of science. Their understanding of the nature of science was compared with that of a control group, which consisted of juniors in the same department. The results of the analysis of covariance revealed that the experimental group outperformed the control group on an instrument documenting respondents' understanding of the nature of science. Additional frequency analysis and interview data indicated that the experimental group students had a better understanding of the nature of creativity, the theory‐based nature of scientific observations, and the functions of theories. In the pretreatment interviews, students in the experimental group based their explanations concerning the nature of science primarily on their intuition. In the posttreatment interview, however, they were able to explain their beliefs by using scientists' arguments or hypotheses as examples. This result indicates that the experimental group's understanding about the nature of science was enhanced by learning to teach through the history of science. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 773–792, 2002     

History of Science as an Instructional Context: Student Learning in Genetics and Nature of Science

This study (1) explores the effectiveness of the contextualized history of science on student learning of nature of science (NOS) and genetics content knowledge (GCK), especially interrelationships among various genetics concepts, in high school biology classrooms; (2) provides an exemplar for teachers on how to utilize history of science in genetics instruction; and (3) suggests a modified concept mapping assessment tool for both NOS and GCK. A quasi-experimental control group research design was utilized with pretests, posttests, and delayed posttests, combining qualitative data and quantitative data. The experimental group was taught with historical curricular lessons, while the control group was taught with non-historical curricular lessons. The results indicated that students in the experimental group developed better understanding in targeted aspects of NOS immediately after the intervention and retained their learning 2 months after the intervention. Both groups developed similar genetics knowledge in the posttest, and revealed a slight decay in their understanding in the delayed posttest.     

理科教师的科学本质观对科学教育的影响

人们对科学本质的认识经历了由科学的“真理观”向科学的“建构观”的转变。不同的科学本质观将直接影响着教师对科学教育目标的不同理解,对科学知识的不同选择,对教学主题的不同设计、教学话语的不同使用,对学生学习的不同评价。教师不同的科学本质观及其教学行为影响着学生的科学本质观的形成,影响着学生对科学内容的理解以及看待问题的思维方式。     

Evaluating the Effectiveness of Physlet-Based Materials in Supporting Conceptual Learning About Electricity

To provide a good understanding of many abstract concepts in the field of electricity above that of their students is often a major challenge for secondary school teachers. Many educational researchers promote conceptual learning as a teaching approach that can help teachers to achieve this goal. In this paper, we present Physlet-based materials for supporting conceptual learning about electricity. To conduct research into the effectiveness of these materials, we designed two different physics courses: one group of students, the experimental group, was taught using Physlet-based materials and the second group of students, the control group, was taught using expository instruction without using Physlets. After completion of the teaching, we assessed students’ thinking skills and analysed the materials with an independent t test, multiple regression analyses and one-way analysis of covariance. The test scores were significantly higher in the experimental group than in the control group (p < 0.05). The results of this study confirmed the effectiveness of conceptual learning about electricity with the help of Physlet-based materials.     

Learning What It Takes to Teach Science: High School Students as Science Teachers for Middle School Students

This study examines the influence of St. John's University Summer Science Experience and Teacher Mentoring Program on African American and Hispanic high school students' interest in science and science teaching as career goals. In the first phase of the program, high school students from six school districts in Suffolk County, Long Island (a suburb of metropolitan New York City) engaged in investigative science experiences that emphasized environmental science, chemistry, and technology and learned about effective science pedagogy. The second phase of the program functioned as a teaching practicum for the high school students, where they planned for instruction and taught middle school students investigations similar to those that they had engaged in during the summer program. Various surveys were developed to assess high school students' attitudes about science and science teaching, knowledge of effective teaching approaches, knowledge of ways to motivate younger students, and the overall impact of the program on the high students' interest in science and/or science teaching as career goals. Program evaluations reveal that over 75% of the students expressed an interest in considering science or science teaching as career possibilities. Implications for minority teacher recruitment are discussed.     

Good intentions are not enough: A case study uncovering perpetuation of internalized and interpersonal oppression in middle school STEM classrooms

Science teachers and educators seek to promote equity and inclusion within their classrooms. Yet, many do not examine how their roles could reproduce oppression that continues to exclude certain groups of students. Centering on how oppression interacts with science teaching and learning, this naturalistic study observed Ms. William and her implementation of two STEM units that integrate science and engineering, to understand power, race, and privilege dynamics in her middle school STEM classrooms. Specifically, we focused on understanding oppression at the interpersonal and internalized level in Ms. William's class. We collected and analyzed video recorded lessons from two different classrooms, two STEM curricula Ms. William had co-developed, and conducted semi-structured interviews after she taught her two STEM units. We identified themes of oppression perpetuated in the classroom by employing thematic analysis, which when guided by our theoretical framework enabled us to illuminate the complex relationship between science teaching and maintaining whiteness as the dominant discourse in science learning. Our findings suggest that an active and critical role from science teachers and educators are required; we must reflect deeply on our science curriculum and teaching strategies and identify practices that remains to be oppressive if promoting equity and inclusion is at the forefront of our science teaching.     

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.     

历史教学中美育渗透的原则和方法

历史教育中的美育有着丰富的内容,它涵盖自然美、社会美、艺术美和科学美,形成一种具有综合特征的历史美。教师要充分挖掘和利用历史教材中的美育因素,在美育渗透中掌握几种行之有效的原则和方法,不仅能激发学生学习的兴趣,增强学生的美感体验,而且能培养学生欣赏美的能力,促进学生的全面发展和健康成长。     

Cases of Science Professors’ Use of Nature of Science

Study provides qualitative analysis of data that answers the following research question: how college science faculty teach science and NOS and incorporate aspects of NOS and the history of science into their undergraduate courses? Study concentrates on four cases and more specifically on three introductory science classes and on four instructors who taught those courses. These instructors were chosen as case studies to explore in greater detail what occurs inside introductory science courses in one particular higher institution in the Northeastern United States. Participants’ teaching styles are presented through a combined and detailed presentation of interview data and classroom observations supported with examples from their classroom activities. Constant comparative approach was used in the process of organizing and analyzing data. Findings revealed that participants preferred to use the traditional teacher-centered lecturing as their teaching style and whose main concern was to cover more content, develop the problem solving skills of their students, and who wanted to teach the fundamental principles of their subjects without paying special importance to the NOS aspects. The study also revealed that other variables of teaching science, such as large class size, lack of management and organizational skills, teaching experience, and instructors’ concerns for students’ abilities and motivation are more important for these scientists then teaching for understanding of NOS.     

Science achievement, gender differences, and experimental work in classes in Slovenia as evident in TIMSS studies

Since 1999, Slovenia has been in the process of introducing nine years of compulsory education to replace the previous eight-year system of compulsory education. Under the new system, the school entry age is six years rather than the former seven years. This reform of the system necessitated a number of other changes, such as those relating to the curriculum and teaching approaches. The purpose of this study was to compare the “new” Slovenian science curriculum with the “old” to ascertain if different relationships exist between the two in terms of achievement and gender, attitudes toward science, and the amount of experimental work undertaken by students in school. Data from the IEA TIMSS 2003 study were used to analyze these relationships. The analyses employed basic statistics and log-linear modeling of the effects of gender, school system, amount of experimental work in school, and students’ science achievement. Compared to students taught under the old curriculum, students taught under the new curriculum performed slightly better on the overall science test. A large decrease in gender differences in achievement was also apparent. The relationship between experimental work and achievement strengthened. Conducting experiments at every lesson related to lower student achievement, while conducting experiments during half of the science lessons related to higher achievement. These findings have a clear message for teachers and policymakers. A moderate amount of time devoted to student experimental work seems to raise science achievement of students as well as promote more positive attitudes toward learning science.     

Design and Application of Interactive Simulations in Problem-Solving in University-Level Physics Education

In recent years, interactive computer simulations have been progressively integrated in the teaching of the sciences and have contributed significant improvements in the teaching–learning process. Practicing problem-solving is a key factor in science and engineering education. The aim of this study was to design simulation-based problem-solving teaching materials and assess their effectiveness in improving students’ ability to solve problems in university-level physics. Firstly, we analyze the effect of using simulation-based materials in the development of students’ skills in employing procedures that are typically used in the scientific method of problem-solving. We found that a significant percentage of the experimental students used expert-type scientific procedures such as qualitative analysis of the problem, making hypotheses, and analysis of results. At the end of the course, only a minority of the students persisted with habits based solely on mathematical equations. Secondly, we compare the effectiveness in terms of problem-solving of the experimental group students with the students who are taught conventionally. We found that the implementation of the problem-solving strategy improved experimental students’ results regarding obtaining a correct solution from the academic point of view, in standard textbook problems. Thirdly, we explore students’ satisfaction with simulation-based problem-solving teaching materials and we found that the majority appear to be satisfied with the methodology proposed and took on a favorable attitude to learning problem-solving. The research was carried out among first-year Engineering Degree students.