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1.
Abstract This study assessed the level of scientific and natural resource knowledge that fourth-, eighth-, and eleventh-grade students in Maine possess concerning acidic deposition. A representative sample of public school students (N = 175) was interviewed on twelve concept principles considered critical to a full understanding of the acidic deposition problem. These included geological, meteorological, ecological, political, and economic concepts. Student knowledge was rated for each concept principle on a scale of complete, high partial, low partial, or no understanding. Common misconceptions were also noted. Generalized correct concept statements of current student knowledge are reported, as well as generalized missing concepts. Our conclusions have implications for teaching about acidic deposition and the design of environmental education curriculum materials based upon student knowledge. This information can help teachers better instruct students about current environmental problems and thus help learners gain an appreciation for the complex and multidisciplinary nature of science and the environment. 相似文献
2.
Schellinger Jennifer Mendenhall Anne Alemanne Nicole Southerland Sherry A. Sampson Victor Marty Paul 《Journal of Science Education and Technology》2019,28(4):341-352
The Next Generation Science Standards support understanding of the nature of science as it is practiced and experienced in the real world through interconnected concepts to be imbedded within scientific practices and crosscutting concepts. This study explored how fourth and fifth grade elementary students’ views of nature of science change when they engage in a technology-enhanced, scientific inquiry-oriented curriculum that takes place across formal and informal settings. Results suggest that student engagement in technology-enhanced inquiry activities that occur in informal and formal settings when supported through explicit instruction focused on metacognitive and social knowledge construction can improve elementary students’ understanding of nature of science.
相似文献3.
Berit S. Haug 《Journal of Science Teacher Education》2014,25(1):79-96
This study examines how an inquiry-based approach to teaching and learning creates teachable moments that can foster conceptual understanding in students, and how teachers capitalize upon these moments. Six elementary school teachers were videotaped as they implemented an integrated inquiry-based science and literacy curriculum in their classrooms. In this curriculum, science inquiry implies that students search for evidence in order to make and revise explanations based on the evidence found and through critical and logical thinking. Furthermore, the curriculum material is designed to address science key concepts multiple times through multiple modalities (do it, say it, read it, write it). Two types of teachable moments were identified: planned and spontaneous. Results suggest that the consolidation phases of inquiry, when students reinforce new knowledge and connect their empirical findings to theory, can be considered as planned teachable moments. These are phases of inquiry during which the teacher should expect, and be prepared for, student utterances that create opportunities to further student learning. Spontaneous teachable moments are instances when the teacher must choose to either follow the pace of the curriculum or adapt to the students’ need. One implication of the study is that more teacher support is required in terms of how to plan for and effectively utilize the consolidation phases of inquiry. 相似文献
4.
This study investigated how professional development featuring evidence‐based customization of technology‐enhanced curriculum projects can improve inquiry science teaching and student knowledge integration in earth science. Participants included three middle school sixth‐grade teachers and their classes of students (N = 787) for three consecutive years. Teachers used evidence from their student work to revise the curriculum projects and rethink their teaching strategies. Data were collected through teacher interviews, written reflections, classroom observations, curriculum artifacts, and student assessments. Results suggest that the detailed information about the learning activities of students provided by the assessments embedded in the online curriculum motivated curricular and pedagogical customizations that resulted in both teacher and student learning. Customizations initiated by teachers included revisions of embedded questions, additions of hands‐on investigations, and modifications of teaching strategies. Student performance improved across the three cohorts of students with each year of instructional customization. Coupling evidence from student work with revisions of curriculum and instruction has promise for strengthening professional development and improving science learning. © 2010 Wiley Periodicals, Inc. J Res Sci Teach 47: 1037–1063, 2010 相似文献
5.
In this study, we investigated the pedagogical content knowledge (PCK) that physics graduate teaching assistants (TAs) developed in the context of teaching a new introductory physics curriculum, Matter and Interactions (M&I). M&I is an innovative introductory physics course that emphasizes a unified framework for understanding the world and presents physics through a few fundamental principles rather than exposing students to concepts through a series of derived equations. Through a qualitative, multiple case study research design, data were collected from multiple sources: non-participant observations, digitally recorded video, semi-structured interviews, TAs?? written reflections, and researchers?? field notes. The TAs?? PCK included three components: (a) knowledge of M&I curriculum goals, (b) knowledge of instructional strategies appropriate to the M&I course, and (c) knowledge of students?? learning. This study shows the complexity of adopting curriculum reforms and the necessity to support the faculty??s and TAs?? knowledge development when a novel science curriculum is adopted. 相似文献
6.
《Africa Education Review》2013,10(1):38-54
Abstract The research reported on in this article was conducted to determine if student teachers enrolled in a Bachelor of Education programme at a South African University are able to integrate science and technology in their teaching. The participants were a cohort of students registered for a course aimed at preparing them to teach grades 4 to 6 in the primary school. The theoretical framework applied in the study is Rogan's Zone of feasible Innovation (ZFI) which uses the analogy that curriculum strategies are good when they proceed just ahead of current practice. Students' understanding of integration of two learning areas was compared to their knowledge base. The findings suggest that students who have very little knowledge of science and/or technology have difficulty in understanding what the scientific and technological processes mean and without this understanding are unable to integrate science and technology effectively in their teaching. It is recommended that the B.Ed programme at this university focuses more on providing opportunities for students to acquire sound knowledge of the two disciplines before attempting any form of integration. 相似文献
7.
ABSTRACTResearch suggests that it is challenging for elementary students to develop conceptual understanding of trait variation, inheritance of traits, and life cycles. In this study, we report on an effort to promote elementary students’ learning of hereditary-related concepts through scientific modelling, which affords opportunities for elementary students to generate visual representations of structure and function associated with heredity. This study is part of a four-year design-based research project aimed at supporting students’ learning about life science concepts using corn as a model organism. Study data were collected during the implementation of a project-developed, multi-week, model-based curriculum module in eight third-grade classrooms located in the Midwestern United States. Through mixed methods research, we analysed video recorded observations of curriculum implementation, student artefacts, and student interviews. Results illustrate epistemic dimensions of model-based explanations (MBEs) for heredity that students prioritised, as well as significant variation in students’ MBEs in 2 of the 8 classrooms. While findings show neither students’ content knowledge nor model-based instruction associated with their MBEs, qualitative differences in teachers’ curriculum enactment, and more general approaches to science instruction, may help explain observed differences. Implications are discussed for curriculum and instruction in support of students’ MBE for heredity-related concepts. 相似文献
8.
9.
Dr Paul L Gardner 《Research in Science Education》1990,20(1):124-133
Technology encompasses the goods and services which people make and provide to meet human needs, and the processes and systems
used for their development and delivery. Although technology and science are related, a distinction can be made between their
purposes and outcomes. This paper considers four possible approaches to teaching students about the relationship between technology
and science. Atechnology-as-illustration approach treats technology as if it were applied science; artefacts are presented to illustrate scientific principles. Acognitive-motivational approach also treats technology as applied science, but presents technology early in the instructional sequence in order
to promote student interest and understanding. In anartefact approach, learners study artefacts as systems in order to understand the scientific principles which explain their workings.
Finally, atechnology-as-process approach emphasises the role of technological capability; in this approach, scientific concepts do not have privileged status
as a basis for selecting curriculum content.
Specializations: science and technology education, educational evaluation, measurement of attitudes and interests. 相似文献
10.
Abstract Examining how teachers structure the activities in a unit and how they facilitate classroom discussion is important to understand how innovative technology-rich curricula work in the context of classroom instruction. This study compared 2 enactments of an inquiry curriculum, then examined students' learning outcomes in classes taught by 2 teachers. The quantitative data show that there were significant differences in the learning outcomes of students in classes of the 2 teachers. This study then examined classroom enactments by the 2 teachers to understand the differences in the learning outcomes. This research specifically focused on how teacher-led discussions (a) helped connect the activities within a curriculum unit and (b) enabled deeper conceptual understanding by helping students make connections between science concepts and principles. This study examined the role that teacher facilitation played in helping students focus on the relations between the various activities in the unit and the concepts that they were learning. The results point to important differences in the 2 enactments, helping to understand better what strategies might enable a deeper conceptual understanding of the science content. 相似文献
11.
Dave Van Breukelen Adrianus Van Meel Marc De Vries 《Research in Science & Technological Education》2017,35(3):368-390
Background: This study is the second study of a design-based research, organised around four studies, that aims to improve student learning, teaching skills and teacher training concerning the design-based learning approach called Learning by Design (LBD).
Purpose: LBD uses the context of design challenges to learn, among other things, science. Previous research shows that this approach to subject integration is quite successful but provides little profit on (scientific) concept learning. For this, a lack of (knowledge of) proper teaching strategies is suggested as an important reason. This study explores these strategies and more specific the interaction with concept learning.
Sample: Six Dutch first-year bachelor’s degree science student teachers, between the ages of 16 and 18, and two science teacher trainers (principal investigators included) were involved.
Design and methods: A mixed methods study was used to study LBD’s teaching practice in depth. Based on a theoretical framework of (concept) learning-related teaching strategies video recordings of a guided LBD challenge were analysed to unravel teacher handling in detail. Complemented by questionnaire and interview data and students’ learning outcomes (pre- and post-exam) the effectiveness of teaching strategies was established and shortcomings were distracted.
Results: Students reached medium overall learning gains where the highest gains were strongly task-related. Teacher handling was dominated by providing feedback and stimulating collaboration and only 13% of all teacher interventions concerned direct explication of underlying science. And especially these explicit teaching strategies were highly appreciated by students to learn about science.
Conclusions: In accordance with insights about knowledge transfer, LBD needs to be enriched with explicit teaching strategies, interludes according to poor-related science content important for cohesive understanding and de- and recontextualisation of concepts for deeper understanding. 相似文献
12.
H. E. Chrispeels M. L. Klosterman J. B. Martin S. R. Lundy J. M. Watkins C. L. Gibson G. K. Muday 《CBE life sciences education》2014,13(4):641-652
This study tests the hypothesis that undergraduates who peer teach genetics will have greater understanding of genetic and molecular biology concepts as a result of their teaching experiences. Undergraduates enrolled in a non–majors biology course participated in a service-learning program in which they led middle school (MS) or high school (HS) students through a case study curriculum to discover the cause of a green tomato variant. The curriculum explored plant reproduction and genetic principles, highlighting variation in heirloom tomato fruits to reinforce the concept of the genetic basis of phenotypic variation. HS students were taught additional activities related to molecular biology techniques not included in the MS curriculum. We measured undergraduates’ learning outcomes using pre/postteaching content assessments and the course final exam. Undergraduates showed significant gains in understanding of topics related to the curriculum they taught, compared with other course content, on both types of assessments. Undergraduates who taught HS students scored higher on questions specific to the HS curriculum compared with undergraduates who taught MS students, despite identical lecture content, on both types of assessments. These results indicate the positive effect of service-learning peer-teaching experiences on undergraduates’ content knowledge, even for non–science major students. 相似文献
13.
Changes in science teachers' conceptions and connections of STEM concepts and earthquake engineering
ABSTRACTThe authors find justification for integrating science, technology, engineering, and mathematics (STEM) in the complex problems that today's students will face as tomorrow's STEM professionals. Teachers with individual subject-area specialties in the STEM content areas have limited experience in integrating STEM. In this study, the authors investigated the conceptual changes of secondary school teachers teaching domain-specific STEM courses after a week-long professional development experience integrating earthquake engineering and domain-specific concepts. They documented and then triangulated outcomes of the experience using participating teachers' concept maps and teacher-generated written materials, respectively. Statistical comparisons of participants' concept maps revealed significant increases in their overall understanding of earthquake engineering and more accurate linkages with and among science domain-specific concepts. Content analyses of teachers' learning products confirmed the concept map analysis and also provided evidence of transfer of workshop learning experiences into teacher-designed curriculum products accurately linking earthquake engineering and domain-specific STEM content knowledge. 相似文献
14.
Few studies have examined the student learning effects of integrating science with mathematics and technology. We compared a school that integrated mathematics, science and technology in grade 9 to a school in the same district that taught the three courses separately. The distinguishing feature of the integrating school was the reorganization of instruction in the three subjects to prepare students for seven group projects (involving a total of 25 h) that required the application of knowledge and skill that were shared by the three subjects, as well as learning outcomes that were unique to each. The study detected benefits for students in the integrated setting in terms of their ability to apply shared learning outcomes, student motivation, ability to work together and attitudes to appraisal of group work. Female students in the integrated school had a better understanding of selected science learning outcomes. Attitudes toward mid‐term exams were higher in the control school. 相似文献
15.
教师的教学观念与教学行为研究——以综合科学课教师为例 总被引：1，自引：0，他引：1
观念是行动的灵魂,教育观念对教学起着指导和统率的作用。一切教学改革的困难都来自旧的教育观念的束缚。综合科学课程的设置与实施是一项复杂的课程改革,要求教师的观念与行为方式发生转变,即教师的知识观、课程观、教学观、学习观等必须转变。但是传统的观念与行为方式是长期形成的,要改变需要时间,是一个自觉的有意识的改变过程。因此,使教师明确应当具有的教育教学观念与教学行为表现,有助于教师转变旧的观念,进而促进综合科学课程的有效实施。 相似文献
16.
Jana A. Hovland Virginia G. Carraway‐Stage Artenida Cela Caitlin Collins Sebastián R. Díaz Angelo Collins Melani W. Duffrin 《Journal of Food Science Education》2013,12(4):81-86
Health professionals and policymakers are asking educators to place more emphasis on food and nutrition education. Integrating these topics into science curricula using hand‐on, food‐based activities may strengthen students’ understanding of science concepts. The Food, Math, and Science Teaching Enhancement Resource (FoodMASTER) Initiative is a compilation of programs aimed at using food as a tool to teach mathematics and science. Previous studies have shown that students experiencing the FoodMASTER curriculum were very excited about the activities, became increasingly interested in the subject matter of food, and were able to conduct scientific observations. The purpose of this study was to: (1) assess 4th graders food‐related multidisciplinary science knowledge, and (2) compare gains in food‐related science knowledge after implementation of an integrated, food‐based curriculum. During the 2009–2010 school year, FoodMASTER researchers implemented a hands‐on, food‐based intermediate curriculum in eighteen 4th grade classrooms in Ohio (n = 9) and North Carolina (n = 9). Sixteen classrooms in Ohio (n = 8) and North Carolina (n = 8), following their standard science curricula, served as comparison classrooms. Students completed a researcher‐developed science knowledge exam, consisting of 13 multiple‐choice questions administered pre‐ and post‐test. Only subjects with pre‐ and post‐test scores were entered into the sample (Intervention n = 343; Control n = 237). No significant differences were observed between groups at pre‐test. At post‐test, the intervention group scored (9.95 ± 2.00) significantly higher (p = 0.000) than the control group (8.84 ± 2.37) on a 13‐point scale. These findings suggest the FoodMASTER intermediate curriculum is more effective than a standard science curriculum in increasing students’ multidisciplinary science knowledge related to food. 相似文献
17.
John Keen 《Curriculum Journal》2013,24(3):255-280
This article discusses revisions to personal narrative writing made by Year 7 students (aged 11–12) in a UK secondary school. The concept of strategic revision was used as a basis for analysing drafts and revised texts in order to investigate strategies and techniques deployed by students in the process of revision and how these related to expectations student writers had of their readers. These analyses suggest that, given a reasonably supportive instructional environment, some Year 7 students can revise their own written texts strategically, and that in doing so they may recruit, and perhaps acquire, a range of writing skills and associated procedural knowledge. They also suggest that in the process of revising their texts, some student writers may have altered their expectations of their readers' understanding, ability to interpret and willingness to empathise. Implications for researching writing processes and for the writing curriculum are suggested, including the use of students' revisions to tap into the complex sets of procedural knowledge which seem to underlie aspects of writing and writing development. 相似文献
18.
Grady Venville Léonie Rennie John Wallace 《International Journal of Science and Mathematics Education》2005,1(4):449-475
The integration of science with other disciplines is a popular curriculum reform strategy. However, there is an absence of empirical research into how students understand and apply science concepts in integrated curricula settings. This case study focuses on three pairs of Year 9 students and their understanding and application of the concepts of electrical circuit and current in the construction of a solar-powered boat. Our results revealed some limited evidence of students applying formal science knowledge to complete their projects and bridge the discipline boundaries. However, students did not always hold and use the accepted scientific view of electrical current as they undertook their projects. We conclude that integrated approaches to teaching science may be appropriate to engage students in using scientific knowledge as a tool to solve real-world problems, but raise some questions as to whether they improve conceptual understanding. 相似文献
19.
Pey-Yan Liou 《Research in Science & Technological Education》2013,31(2):162-181
Background: In Bangladesh, a common science curriculum caters for all students at the junior secondary level. Since this curriculum is for all students, its aims are both to build a strong foundation in science while still providing students with the opportunities to use science in everyday life – an aim consistent with the notion of scientific literacy.Purpose: This paper reports Bangladeshi science teachers’ perspectives and practices in regard to the promotion of scientific literacy.Sample: Six science teachers representing a range of geographical locations, school types with different class sizes, lengths of teaching experience and educational qualifications.Design and method: This study employed a case study approach. The six teachers and their associated science classes (including students) were considered as six cases. Data were gathered through observing the teachers’ science lessons, interviewing them twice – once before and once after the lesson observation, and interviewing their students in focus groups.Results: This study reveals that participating teachers held a range of perspectives on scientific literacy, including some naïve perspectives. In addition, their perspectives were often not seen to be realised in the classroom as for teachers the emphasis of learning science was more traditional in nature. Many of their teaching practices promoted a culture of academic science that resulted in students’ difficulty in finding connections between the science they study in school and their everyday lives. This research also identified the tension which teachers encountered between their religious values and science values while they were teaching science in a culture with a religious tradition.Conclusions: The professional development practice for science teachers in Bangladesh with its emphasis on developing science content knowledge may limit the scope for promoting the concepts of scientific literacy. Opportunities for developing pedagogic knowledge is also limited and consequently impacts on teachers’ ability to develop the concepts of scientific literacy and learn how to teach for its promotion. 相似文献