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41.
42.
In two experiments, the influence of exposure to a CS? on the acquisition and retention of a conditioned odor aversion was examined. Preweanling rats were given exposure to the CS? either prior to (CS?/CS+) or following (CS + /CS?) the pairing of a second odor (the CS+) with footshock. The results of Experiment 1 indicated that subjects in both of the treatment conditions acquired aversions of comparable strength to the odor paired with footshock and that retention of the odor aversion was not affected by order of stimulus presentation during conditioning. Experiment 2 indicated, however, that the effectiveness of pretest exposure to various elements of the conditioning episode in reactivation of the memory for conditioningwas dependent on the order of stimulus presentation during conditioning. This differential effectiveness of the various reactivation treatments is discussed in terms of their relationship to the associative “status” of the stimuli present during conditioning and in terms of the information provided to the animal by the reactivation treatment. 相似文献
43.
Norman Phillips 《Science & Education》2004,13(7-8):653-661
Foucault’s pendulum exhibition in 1851 occurred in an era now known by development of the theorems of Coriolis and the formulation of dynamical meteorology by Ferrel. Yet today the behavior of the pendulum is often misunderstood. The existence of a horizontal component of Newtonian gravitation is essential for understanding the behavior with respect to the stars. Two simple mechanical principles describe why the path of oscillation is fixed only at the poles; the principle of centripetal acceleration and the principle of conservation of angular momentum. A sky map is used to describe the elegant path among the stars produced by these principles. 相似文献
44.
In the context of globalization, indigenous educational systems of endangered cultures are faced with extinction. Biologists recognize that biodiversity is dependent upon sustaining and promoting knowledge and values of indigenous cultures. Education researchers have a similar responsibility — to promulgate educational diversity before several thousand years of valuable educational knowledge is extirpated. This paper presents the Keiyo of Kenya who have a rich educational system. Its focus is on an indigenous game, Kechui (using calculations to sharpen your mind), based on cattle raiding, and the Keiyos' use of the game for learning mixed strategy-based probabilistic problem solving. Kechui may also have international potential for teaching probabilistic problem solving in contemporary mathematics and science, especially genetics. 相似文献
45.
This study investigated the influence of two different explicit instructional approaches in promoting more informed understandings of nature of science (NOS) among students. Participants, a total of 42 students, comprised two groups in two intact sections of ninth grade. Participants in the two groups were taught environmental science by their regular classroom teacher, with the difference being the context in which NOS was explicitly taught. For the “integrated” group, NOS instruction was related to the science content about global warming. For the “nonintegrated” group, NOS was taught through a set of activities that specifically addressed NOS issues and were dispersed across the content about global warming. The treatment for both groups spanned 6 weeks and addressed a unit about global warming and NOS. An open‐ended questionnaire, in conjunction with semistructured interviews, was used to assess students' views before and after instruction. Results showed improvements in participants' views of NOS regardless of whether NOS was integrated within the regular content about global warming. Comparison of differences between the two groups showed “slightly” greater improvement in the informed views of the integrated group participants. On the other hand, there was greater improvement in the transitional views of the nonintegrated group participants. Therefore, the overall results did not provide any conclusive evidence in favor of one approach over the other. Implications on the teaching and learning of NOS are discussed. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 43: 395–418, 2006 相似文献
46.
In response to increased student assessment and accountability concerns, colleges and universities have been called on to increase their efforts to improve the retention rates of an increasingly diverse student body. This article outlines a synergistic strategy for promoting minority student persistence through faculty renewal efforts that encourage faculty to question their cultural beliefs and academic values concerning the teaching and learning enterprise.Dr. Kay F. Norman is currently with Delaware State University where she is Director of the Center for Excellence in Teaching. She also teaches graduate courses in Educational Assessment and Special Education Administration and Supervision. She holds an Ed.D. in Higher Education Administration with emphasis in Student Services from Texas Southern University. Her research interests are in student retention, assessment, and effective teaching. James Norman, Ph.D., is an Associate Professor of Education at Delaware State University's School of Education. He is a graduate of Ohio State University. Dr. Norman's research interest include special education monitoring and compliance issues, and behavioral management systems. 相似文献
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48.
Temperament and the Reactions to Unfamiliarity 总被引:10,自引:1,他引:10
Jerome Kagan 《Child development》1997,68(1):139-143
The begavioral reaction to unfamiliar events are basic pheomena in all vertebrates, Four month-old injants who show a low threshold to become distressed and motorically aroused to unfamiliar stimuli are likely than others to become fearful and subdued during early childhood, whereas infants who show a high arousal threshold are more likely to become bold and sociable. After presenting some developmental correlates and thrajectories of these 2 temperamental biases, I consider their implication for psychopathology and the relation between propositions containing psychological and biological concepts. 相似文献
49.
Dr. Norman Somers 《Innovative Higher Education》1979,4(1):32-40
Although undergraduates often earn academic credit for prior learning acquired through experience, graduate students are rarely afforded that opportunity. Central Michigan University and The University of Northern Colorado are examples of the very few institutions that do accept prior experiential learning toward graduate degrees. The Council of Graduate Schools in the United States adamantly opposes graduate credit for prematriculation experiences; however, the American Council on Education favors the assessment of extrainstitutional learning which has occurred prior to a student's enrollment. Further, the Council for the Advancement of Experiential Learning recently formed a task force to promote experiential learning in the graduate sector. The future for the assessment of experiential learning for graduate credit is indeed favorable. 相似文献
50.