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481.
The purpose of this investigation was to qualitatively investigate the effects of a microteaching course on preservice science teachers' perceptions of teaching, instructional decisions, and changes in beliefs which occur throughout the course. A total of 17 preservice teachers constituted the sample for this investigation. In addition to viewing and self-critiquing the videotapes of their lessons, students received both oral and written feedback from peers and instructors. Subjects were also required to complete a reaction questionnaire concerning their beliefs/perceptions prior to the first presentation as well as following each of the four required presentations. Systematic comparisons among students' self-critiques and reaction questionnaires yielded a total of 12 categories of concerns/beliefs about teaching. These categories pertained to either “Concerns for Self” or “Concerns for Students.” Although the subjects appeared to proceed through a developmental process beginning with concerns for self and moving toward concerns for students, analyses of subjects' comments about students revealed that such remarks were actually egocentric. Additionally, the data indicated that preservice teachers view planning as a complex, two-component process (i.e., the physical act of writing a plan and the subsequent mental rehearsal of that plan.). 相似文献
482.
Norman E. Walker 《Clearing house (Menasha, Wis.)》2013,86(8):490-492
483.
Two experiments examined the effects of nonreinforced flavor exposure on the strength of a conditioned taste aversion. Rats were conditioned by pairing maple flavor with LiC1. Prior to or subsequent to this pairing, some animals received nonreinforced exposure to either maple or saccharin. In separate subjects, preference for maple was tested 1 or 21 days after the last training episode. In the first experiment, the nonreinforced stimulus exposure occurred before conditioning (latent inhibition, or LI, procedure); in the second experiment, the nonreinforced exposure occurred after conditioning (extinction, or EXT, training). In both experiments, nonreinforced exposure to maple or saccharin reduced the magnitude of a conditioned maple aversion when testing occurred soon after conditioning. When testing was delayed, however, the attenuation due to nonreinforced saccharin exposure dissipated, both with the LI procedure and with EXT. In contrast, the nonreinforced exposure to maple was found to attenuate conditioned reactions at both short and long retention intervals. The release from generalized LI and spontaneous recovery following generalized EXT training are discussed in terms of retrieval processing. The possibility that the same mechanism may underlie LI and EXT is considered. 相似文献
484.
This study aimed to delineate the factors mediating the translation of preservice teachers' conceptions of the nature of science into instructional planning and classroom practice. Additionally, the study assessed the influence of temporally separating teaching preservice teachers about the nature of science and teaching them how to address it instructionally. This latter intervention was based on the results of a previous investigation. Prior to student teaching, the 13 participants responded to an open‐ended questionnaire designed to assess conceptions of the nature of science. Throughout student teaching, daily lesson plans, classroom videotapes, portfolios, and supervisors' weekly clinical observation notes were collected and searched for explicit instances of nature of science planning and/or instruction. Following student teaching, participants were interviewed to validate their responses to the open‐ended questionnaire, identify factors that mediate the translation of their conceptions of the nature of science into classroom teaching, and explicate their pedagogical preferences for teaching the nature of science. Participants possessed adequate understanding of several aspects of the nature of science and, contrary to the results of the earlier investigation, most did not conflate the nature of science with science processes. Furthermore, several participants explicitly addressed some aspects of the nature of science during classroom instruction. Participants, however, failed to include the nature of science among their instructional objectives and did not make a concerted effort to assess student understandings. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 563–581, 2000 相似文献
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The rise in globalisation studies in comparative education places neo-institutional theory at the centre of many debates among comparative education researchers. However, uncertainty about how to interpret neo-institutional theory still persists among educational comparativists. With this uncertainty comes misinterpretation of its principles, variations and explanatory power. Two problematic misconceptions prevail: (1) the belief that the ‘world culture’ strand is the only version of neo-institutional theory applicable to comparative education research; and (2) the assumption that the global homogenisation of society, culture and schooling is a goal of researchers applying neo-institutional theory to comparative education phenomena. This article addresses these misconceptions, elucidating neo-institutional theory and its applicability to comparative education research. Our findings suggest that neo-institutional frameworks for comparative education research are useful, but that complementary approaches and methods are also necessary. 相似文献