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1.
Active‐learning labs for two topics in high school biology were developed through the collaboration of high school teachers and university faculty and staff and were administered to 408 high school students in six classrooms. The content of instruction and testing was guided by State of Texas science objectives. Detailed teacher records describing daily classroom activities were used to operationalize two types of instruction: active learning, which used the labs; and traditional, which used the teaching resources ordinarily available to the teacher. Teacher records indicated that they used less independent work and fewer worksheets, and more collaborative and lab‐based activities, with active‐learning labs compared to traditional instruction. In‐class test data show that students gained significantly more content knowledge and knowledge of process skills using the labs compared to traditional instruction. Questionnaire data revealed that students perceived greater learning gains after completing the labs compared to covering the same content through traditional methods. An independent questionnaire administered to a larger sample of teachers who used the lab‐based curriculum indicated that they perceived changing their behaviors as intended by the student‐centered principles of the labs. The major implication of this study is that active‐learning–based laboratory units designed and developed collaboratively by high school teachers and university faculty, and then used by high school teachers in their classrooms, can lead to increased use of student‐centered instructional practices as well as enhanced content knowledge and process learning for students. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 960–979, 2007 相似文献
2.
This study supported two hypotheses. First, adjunct questions interacted with a science chart so powerfully that content established as difficult to learn in the pilot and in this study's control groups became easier to learn when charted. Second, students familiar with the chart test before instruction (test exposure) were better prepared to take this test after instruction. This adjunct-question study examined the generalizability of selective-attention and academic-studying hypotheses to a modified science chart medium. About 300 high school students were randomly assigned to four conditions each including a vitamin chart (chart only, test exposure, importance of questions emphasized to students by teachers, and combinational conditions—test exposure and question importance) across 16 biology classrooms. Then these same students were again randomly assigned within each classroom to a control and to four question treatments no questions, questions focusing on easy-to-learn charted content, questions focusing on difficult-to-learn charted content, and a combinational treatment. 相似文献
3.
This study supported two hypotheses. First, adjunct questions interacted with a science chart so powerfully that content established as difficult to learn in the pilot and in this study's control groups became easier to learn when charted. Second, students familiar with the chart test before instruction (test exposure) were better prepared to take this test after instruction. This adjunct-question study examined the generalizability of selective-attention and academic-studying hypotheses to a modified science chart medium. About 300 high school students were randomly assigned to four conditions each including a vitamin chart (chart only, test exposure, importance of questions emphasized to students by teachers, and combinational conditions–-test exposure and question importance) across 16 biology classrooms. Then these same students were again randomly assigned within each classroom to a control and to four question treatments (no questions, questions focusing on easy-to-learn charted content, questions focusing on difficult-to-learn charted content, and a combinational treatment). 相似文献
4.
Jamie N. Mikeska Tamara Shattuck Steven Holtzman Daniel F. McCaffrey Nancy Duchesneau Yi Qi 《International Journal of Science Education》2013,35(18):2594-2623
ABSTRACTIn order to create conditions for students’ meaningful and rigorous intellectual engagement in science classrooms, it is critically important to help science teachers learn which strategies and approaches can be used best to develop students’ scientific literacy. Better understanding how science teachers’ instructional practices relate to student achievement can provide teachers with beneficial information about how to best engage their students in meaningful science learning. To address this need, this study examined the instructional practices that 99 secondary biology teachers used in their classrooms and employed regression to determine which instructional practices are predictive of students’ science achievement. Results revealed that the secondary science teachers who had well-managed classroom environments and who provided opportunities for their students to engage in student-directed investigation-related experiences were more likely to have increased student outcomes, as determined by teachers’ value-added measures. These findings suggest that attending to both generic and subject-specific aspects of science teachers’ instructional practice is important for understanding the underlying mechanisms that result in more effective science instruction in secondary classrooms. Implications about the use of these observational measures within teacher evaluation systems are discussed. 相似文献
5.
This study explored teacher perspectives on the use of socioscientific issues (SSI) and on dealing with ethics in the context of science instruction. Twenty‐two middle and high school science teachers from three US states participated in semi‐structured interviews, and researchers employed inductive analyses to explore emergent patterns relative to the following two questions. (1) How do science teachers conceptualize the place of ethics in science and science education? (2) How do science teachers handle topics with ethical implications and expression of their own values in their classrooms? Profiles were developed to capture the views and reported practices, relative to the place of ethics in science and science classrooms, of participants. Profile A comprising teachers who embraced the notion of infusing science curricula with SSI and cited examples of using controversial topics in their classes. Profile B participants supported SSI curricula in theory but reported significant constraints which prohibited them from actualizing these goals. Profile C described teachers who were non‐committal with respect to focusing instruction on SSI and ethics. Profile D was based on the position that science and science education should be value‐free. Profile E transcended the question of ethics in science education; these teachers felt very strongly that all education should contribute to their students' ethical development. Participants also expressed a wide range of perspectives regarding the expression of their own values in the classroom. Implications of this research for science education are discussed. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 43: 353–376, 2006 相似文献
6.
Susan Bobbitt Nolen 《科学教学研究杂志》2003,40(4):347-368
In a study of the relationship between high school students' perceptions of their science learning environments and their motivation, learning strategies, and achievement, 377 students in 22 introductory science classrooms completed surveys in the fall and spring of their ninth‐grade year. Hierarchical linear regression was used to model the effects of variables at both the classroom and individual level simultaneously. High intraclass agreement (indicated by high parameter reliability) on all classroom environment measures indicated that students shared perceptions of the classroom learning environment. Controlling for other factors, shared perceptions that only the most able could succeed in science classrooms and that instruction was fast‐paced and focused on correct answers negatively predicted science achievement, as measured on a districtwide curriculum‐linked test. Shared perceptions that classrooms focused on understanding and independent thinking positively predicted students' self‐reported satisfaction with learning. Implications of these results for both teaching and research into classroom environments are discussed. © 2003 Wiley Periodicals, Inc. J Res Sci Teach 40: 347–368, 2003 相似文献
7.
The classroom environment influences students’ academic outcomes, but it is often students’ perceptions that shape their classroom experiences. Our study examined the extent to which observed classroom environment features shaped perceptions of the classroom, and explained levels of, and changes in, girls’ motivation in junior secondary school science classes across two school terms. Girls have been found to feel less capable than boys and to under-participate in science classrooms, even though their achievement levels are similar. Four teachers and five of their classrooms of students (N = 52) reported their perceptions of the classroom environment, and trained observers rated the ‘actual’ classroom environment. Students also completed questions regarding their motivations for science at both time points. Hierarchical linear modelling showed that students’ perceptions of classroom structure were very important and exerted significant influence on science motivations. All of the six observed classroom dimensions affected students’ extrinsic utility value, via perceptions of structure. Other classroom dimensions showed particular patterns of relationship with motivations. Teachers’ perceptions of the classroom environment were often more positive than those of the students, which is congruent with previous research. The findings have implications for retaining girls in science and, thereby, addressing the gender gap in science-related vocations. 相似文献
8.
Jan L. Plass Catherine Milne Bruce D. Homer Ruth N. Schwartz Elizabeth O. Hayward Trace Jordan Jay Verkuilen Florrie Ng Yan Wang Juan Barrientos 《科学教学研究杂志》2012,49(3):394-419
Are well‐designed computer simulations an effective tool to support student understanding of complex concepts in chemistry when integrated into high school science classrooms? We investigated scaling up the use of a sequence of simulations of kinetic molecular theory and associated topics of diffusion, gas laws, and phase change, which we designed and experimentally tested. In the two effectiveness studies reported, one in a rural and the other in an urban context, chemistry teachers implemented two alternate versions of a curricular unit—an experimental version, incorporating simulations, and a control version, using text‐based materials covering the same content. Participants were 718 high school students (357 rural and 361 urban), in a total of 25 classrooms. The implementation of the simulations was explored using criteria associated with fidelity of implementation (FOI). Each context provided insights into the role of FOI in affecting the effectiveness of the interventions when working with groups of teachers. Results supported the effectiveness of this sequence of simulations as a teaching tool in a classroom context, and confirmed the importance of FOI factors such as adherence and exposure in determining the specific environments in which these materials were most effective. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 394–419, 2012 相似文献
9.
This article reports the development and application of two instruments for assessing science teachers’ pedagogical knowledge in the context of teaching higher‐order thinking: a Likert‐type research instrument, and an instrument that analyzes classroom observations. The rationale for developing these instruments and their main categories is described. One hundred and fifty Israeli science teachers replied to the Likert‐type questionnaire. Results show that biology teachers gained a significantly higher score than either physics or chemistry teachers, that junior high school teachers scored significantly higher than high school teachers, and that a significant negative correlation was found between final scores and teaching experience. Participants in the classroom observation study were 14 teachers who attended a one‐year professional development course for teaching higher‐order thinking. The instrument was sensitive in detecting progress in teachers’ pedagogical knowledge in several categories, such as: Frequency of tasks that required higher‐order thinking; The variety of thinking strategies that teachers addressed during their lessons; Engagement of students in metacognitive thinking; and Using the “language of thinking” in class. The implications of the findings for research and practice are described. 相似文献
10.
This study examined how instructional challenges presented by gifted students shaped teachers’ instructional strategies. This
study is a qualitative research grounded in a social constructivist framework. The participants were three high school science
teachers who were teaching identified gifted students in both heterogeneously- and homogeneously-grouped classrooms. Major
data sources are classroom observations and interviews. Data analysis indicated that these science teachers developed content-specific
teaching strategies based on their understanding of gifted students, including: (a) instructional differentiation, e.g., thematic
units, (b) variety in instructional mode and/or students’ products, (c) student grouping strategies and peer tutoring, (d)
individualized support, (e) strategies to manage challenging questions, (f) strategies to deal with the perfectionism, and
(g) psychologically safe classroom environments. 相似文献
11.
In this study, an anthropological perspective informed by sociolinguistic discourse analysis was used to examine how teachers, students, and scientists constructed ways of investigating and knowing in science. Events in a combined fourth‐ and fifth‐grade elementary class were studied to document how the participating teacher provided opportunities for students to diverge from the intended curriculum to pursue their questions concerning the behavior of sea animals in a marine science observation tank. Analysis of the classroom discourse identified ways that particular teaching strategies provided opportunities for student engagement in scientific practices. Implications of this study for the teaching of science in elementary classrooms include the value of student‐initiated science explorations under the conditions of uncertainty and for topics in which the teacher lacked relevant disciplinary knowledge. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 237–258, 2000. 相似文献
12.
13.
杨广军 《安徽教育学院学报》2006,24(5):125-128
基础教育改革中自然科学课程的设立呼唤高素质的科学教师,高师培养中学理科分科教师的一贯模式必须要打破,自然科学专业的设立或理、化、生分科院系互选课程是高师培养科学教师的两条可行路径。 相似文献
14.
Denise H. Daniels Deborah L. Kalkman Barbara L. McCombs 《Early education and development》2001,12(2):253-273
Primary studentsa' perceptions of teacher practices and learning were investigated in two different classroom contexts: learner-centered (LC) and non-learner-centered (NLC). Sixty-six children in kindergarten, first, and second grades evaluated and explained teacher practices, reported self-perceptions, and expressed views on good teachers and learning in school. Results indicate that primary students value similar characteristics in teachers regardless of differences in classroom contexts or grade levels. In general, students reported that good teachers are caring, helpful (responsive), and stimulating. Furthermore, results showed that young children's interest in schoolwork and learning was lower in NLC classrooms than in LC classrooms, particularly for students who perceived their teachers as not being supportive and stimulating. Children's views of how learning occurs tended to be consistent with the practices in their classrooms (i.e. self-directed and process-oriented versus teacher-directed and basic skills-oriented). However, children who held contemporary views of learning that were inconsistent with practices in their NLC classrooms showed signs of becoming alienated from school. These results are interpreted in terms of self-determination theory, learner-centered psychological principles, and developmentally-appropriate practice. The importance of considering young children's perspectives for continuing motivation to learn is highlighted. 相似文献
15.
Learning from and responding to students' questions: The authoritative and dialogic tension 总被引：1，自引：1，他引：0
In this study we present an analysis of classroom interactions initiated by students' wonderment questions. Our interest in such events arises from their potential to stimulate active intellectual engagement in classrooms, which can impact upon the subsequent development of the classroom discourse. In investigating this issue we shall address the following research question: How do student questions impact upon the teaching explanatory structure and modify the form of the ongoing classroom discourse, in selected science lessons? From data collected in a Brazilian secondary school we have selected three classroom episodes, with large differences in both the context in which the student's question emerges and in the communicative approach developed in response to it. The analysis, based on the framework proposed by Mortimer and Scott [Mortimer and Scott (2003). Meaning making in secondary science classrooms. Maidenhead: Open University Press], shows that questions made by students are important in providing feedback from students to the teacher, enabling adjustments to the teaching explanatory structure. These adjustments sometimes occur smoothly, at other times with major changes to the features of the classroom discourse, and elsewhere with misunderstanding and disagreement. The data also suggest the need to consider students' intentions and their active participation in the negotiation of both the content and structure of classroom discourse. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:174–193, 2010 相似文献
16.
This investigation examined 10th‐grade biology students' decisions to enroll in elective science courses, and explored certain attitudinal perceptions of students that may be related to such decisions. The student science perceptions were focused on student and classroom attitudes in the context of differing learning cycle classrooms (high paradigmatic/high inquiry, and low paradigmatic/low inquiry). The study also examined possible differences in enrollment decisions/intentions and attitudinal perceptions among males and females in these course contexts. The specific purposes were to: (a) explore possible differences in students' decisions, and in male and female students' decisions to enroll in elective science courses in high versus low paradigmatic learning cycle classrooms; (b) describe patterns and examine possible differences in male and female students' attitudinal perceptions of science in the two course contexts; (c) investigate possible differences in students' science perceptions according to their decisions to enroll in elective science courses, participation in high versus low paradigmatic learning cycle classrooms, and the interaction between these two variables; and (d) examine students' explanations of their decisions to enroll or not enroll in elective science courses. Questionnaire and observation data were collected from 119 students in the classrooms of six learning cycle biology teachers. Results indicated that in classrooms where teachers most closely adhered to the ideal learning cycle, students had more positive attitudes than those in classrooms where teachers deviated from the ideal model. Significantly more females in high paradigmatic learning cycle classrooms planned to continue taking science course work compared with females in low paradigmatic learning cycle classrooms. Male students in low paradigmatic learning cycle classrooms had more negative perceptions of science compared with males in high paradigmatic classrooms, and in some cases, with all female students. It appears that using the model as it was originally designed may lead to more positive attitudes and persistence in science among students. Implications include the need for science educators to help teachers gain more thorough understanding of the learning cycle and its theoretical underpinnings so they may better implement this procedure in classroom teaching. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 1029–1062, 2001 相似文献
17.
Elizabeth I. Stringer Jasmine D. Hendrix Kirk A. Swortzel J. Byron Williams M. Wes Schilling 《Journal of Food Science Education》2019,18(1):21-28
Historically, high school chemistry has been the predominate venue for the introduction of food science curriculum to students. With the current decline in chemistry as a required course for graduation, the possibility of exposure to food science in high school could equally decline. The purpose of this research was to determine if high school students in a biology class without a chemistry background could comprehend eight basic food science principles equally as well as students in a chemistry class that were taught the same principles. This study assessed baseline knowledge of high school students, determined the effect of food science‐based lessons on baseline knowledge and level of understanding, and determined the effect of food science‐based lessons on students’ awareness of and interest in food science. Baseline knowledge and awareness of food science was low. Food science‐based instruction resulted in higher posttest scores. Results indicated no differences in students’ knowledge base and level of understanding between biology and chemistry classes and supported the idea of further incorporating a food science curriculum into high school biology. 相似文献
18.
This article reports the findings from a study that examined how high school biology teachers describe their instructional use of reading and textbooks. In the study, both quantitative and qualitative data were collected—by self-report mail questionnaire and personal interview, respectively. Eighty percent of 184 sampled teachers responded to the questionnaire, and, of these, a subsample of 16 teachers—selected to be broadly representative of the questionnaire sample—were interviewed subsequently with their instructional materials present to increase recall. We found that biology teachers modified their use of textbooks according to the academic level of the biology class that they taught. In lower academic level classes, teachers provided students with many reading activities but expected them to learn biology content in class. In higher academic level classes, teachers expected students to learn from both independent reading and classroom instruction. Biology teachers viewed both reading and inquiry activities as important to learning biology, but they appeared unsure of how to incorporate reading comprehension strategies into their science instruction. 相似文献
19.
Victoria B. Costa 《International Journal of Science Education》2013,35(9):1005-1023
This study focuses on the relationships between meanings of science constructed in classrooms and sociocultural precepts of the wider society. Research presented is part of a larger study of the negotiation of knowledge and roles in high school science classrooms. The data presented document that what goes on in classrooms reflects and recreates societal attitudes towards work, in general, and teachers’ work, in particular. The teacher in this study reduces his demands for academic work in return for students’ cooperation and as a means of coping with negative aspects of teaching. Students, in turn, are not concerned about the specific subject matter of chemistry. What matters to them are the academic credentials that lead to success in the college and employment arenas. As a result, teacher and students construct school chemistry to be what you‐get‐through‐as‐you‐get‐along. The interdependence of the roles and actions of teachers and students suggests changes in policy and practice. 相似文献
20.
This study examined teachers’ and students’ initial conceptions of computer-based models—Flash and NetLogo models—and documented how teachers and students reconciled notions of multiple representations featuring macroscopic, submicroscopic and symbolic representations prior to actual intervention in eight high school chemistry classrooms. Individual in-depth interviews were conducted with 32 students and 6 teachers. Findings revealed an interplay of complex factors that functioned as opportunities and obstacles in the implementation of technologies in science classrooms. Students revealed preferences for the Flash models as opposed to the open-ended NetLogo models. Altogether, due to lack of content and modeling background knowledge, students experienced difficulties articulating coherent and blended understandings of multiple representations. Concurrently, while the aesthetic and interactive features of the models were of great value, they did not sustain students’ initial curiosity and opportunities to improve understandings about chemistry phenomena. Most teachers recognized direct alignment of the Flash model with their existing curriculum; however, the benefits were relegated to existing procedural and passive classroom practices. The findings have implications for pedagogical approaches that address the implementation of computer-based models, function of models, models as multiple representations and the role of background knowledge and cognitive load, and the role of teacher vision and classroom practices. 相似文献