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The purpose of this study was to explore the nature of requisite teacher knowledge for teaching lower-track science students.
Using video accounts, student focus groups, and teacher reflections researchers documented missteps, dead-ends, and unfruitful
trajectories informed by the teacher’s incoming knowledge and compared these instances to necessary modifications informed
by students’ voices and cultural artifacts. Our study revealed the shifting nature of sociocultural and pedagogical content
knowledge of the teacher immersed in a context unlike that he experienced as a student. Results showed that teachers of majority
backgrounds could learn to teach diverse students with at least moderate success from the perspective of their students. Implications
for research and teacher education in diverse settings are discussed. 相似文献
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This ethnographic study examined how rural, lower track, underrepresented students made sense of their place in school and what role school science played in their cultural reproduction. The objectives of the study were to identify key components of science classroom discourse, analyze means of negotiating these components, and explicate participants' beliefs and roles in defining microcultural identities specific to rural, underrepresented school contexts. Eight students and their teacher participated in this study, which drew heavily upon teacher and student revoicing of common events. Results showed that the quality of science instruction was subverted through a process of negotiation between students and teachers in the context of low expectations and the school culture. Implications for research and practice are discussed. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 574–598, 2001 相似文献
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The effects of two types of two well-established microcomputer-based teaching methods were examined for their effect teaching
high school students kinetics. The use of data acquisition probeware and digital video analysis were studied for their impact
on students’conceptions and ability to interpret graphical relationships to real world events. The abilities of high school
physics students to accurately graph kinetics using distance, velocity and acceleration in one dimensional motion varied between
and among the groups. Using a split category random assignment analysis students investigated these motions with both. In
a quasi experimental fashion students received similar instruction on each but in a different sequence. Students received
the similar teaching in reverse order and both strategies were found to be successful and complementary. There were indications
student achievement was higher for velocity–time and acceleration-time graphs using the digital video analysis method. Implications
for this study on teaching tools, methodologies, curriculum development, program implementation, and assessment are discussed. 相似文献
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Too Close for Comfort: Real-Time Science Teaching Reflections via Digital Video Editing 总被引：1，自引：0，他引：1
This study examined the use of digital video editing as the main venue for fostering reflection. The impact of digital video
editing technology on preservice teachers' beliefs included shifts in (a) reflections regarding children's thinking, (b) planning
and instruction informed by reflection, and (c) notions of teaching expertise and requisite knowledge. Results were based
on an instructional approach emphasizing the exploration of preservice teachers' own planning and teaching as they edited
their own video accounts. These findings contrast typical video usage in teacher preparation in which teachers reflect upon
the practice of others. Implications for teacher education programs and future research are discussed. 相似文献
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Randy K. Yerrick Elizabeth Doster Jeffrey S. Nugent Helen M. Parke Frank E. Crawley 《科学教学研究杂志》2003,40(5):443-463
Analogies have been argued to be central in the process of establishing conceptual growth, making overt connections and carryover into an intended cognitive domain, and providing a generative venue for developing conceptual understanding inherent in constructivist learning. However, students' specific uses of analogies for constructing arguments are not well understood. Specifically, the results of preservice teachers' knowledge gains are not widely studied. Although we would hope that engaging preservice science teachers in exemplary lessons would assist them in using and generating analogies more expertly, it is not clear whether or how such curricula would affect their learning or teaching. This study presents an existence proof of how preservice science teachers used analogies embedded in their course materials Physics by Inquiry. This fine‐grained analysis of small group discourse revealed three distinct roles of analogies including the development of: (a) cognitive process skills, (b) scientific conceptual understanding, and (c) social contexts for problem solving. Results suggest that preservice teachers tend to overgeneralize the analogies inserted by curriculum materials, map irrelevant features of analogies into collaborative problem solving, and generate personal analogies, which counter scientific concept development. Although the authors agree with the importance of collaborative problem solving and the insertion of analogies for preservice teachers' conceptual development, we believe much more needs to be understood before teachers can be expected to construct and sustain effective learning environments that rely on using analogies expertly. Implications for teacher preparation are also discussed. © 2003 Wiley Periodicals, Inc. J Res Sci Teach 40: 443–463, 2003 相似文献
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This study explores how activities developed by science experts in partnership with middle school teachers were employed and
interpreted. The goals of this partnership were to (a) help the science teacher meet earth science content standards in new
ways, (b) expose students to ‘real world’ experiences outside their school setting, and (c) positively impact teacher practice
by providing a program to be used as a catalyst for future learning. Over 300 sixth graders mostly underrepresented science
students attended activities at an aquarium serving an urban West Coast urban context. Science teachers, non-science teachers,
scientists, and volunteers were all engaged in pre-trip instruction, professional development opportunities, and follow-up
activities as this partnership effort explored ways to enhance local literacy initiatives across the curriculum. Results suggest
that teacher beliefs about informal education impacted their view and participation in the program and the level of submersion
of teachers in collaboration strongly affects the ability to serve underrepresented students on informal excursions. Implications
for teacher education and outreach are discussed. 相似文献
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There currently exists unparalleled discrepant growth between technological advancements and educators' understanding of appropriate classroom technology implemenation. The Tech Tools teacher enhancement program was designed to provide teachers with hardware and expertise with state-of-the-art science and math microcomputer technologies. This study was conducted as an examination of the implementation of current technologies in teacher education and school settings for the purpose of informing other science, mathematics, and technology reform efforts. For over two years researchers gathered data from surveys, interviews, and on site visits and observations explicating the 1) teacher knowledge and beliefs, 2) computer use for instruction, 3) hardward access, and 4) school support for technology use. Results revealed teachers given identical equipment and training implemented similar technologies in vastly different ways. Discrepancies in implementation of technology were best explained through the lenses of teachers' existing practice and beliefs about their school context. Recommendations are given regarding technology implementation, teacher education, and evaluation of technology initiatives. 相似文献
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Journal of Science Teacher Education - 相似文献