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111.
Dely Elliot Delia Wilson Stephen Boyle 《British journal of educational technology : journal of the Council for Educational Technology》2014,45(4):571-580
Scotland's rich heritage in the field of science and engineering and recent curricular developments led to major investment in education to equip pupils with improved scientific knowledge and skills. However, due to its abstract and conceptual nature, learning science can be challenging. Literature supports the role of multimedia technology in addressing the difficulties associated with science learning. This paper reports on a two‐phase investigation that explored the impact of multimedia resources situated in a national e‐learning portal to (1) assist generalist and specialist science teachers' teaching practices and (2) stimulate pupils' interest, encourage engagement and improve overall science learning experiences. Our research also investigated how portal resources facilitated and/or acted as barriers for teaching and learning. Findings from our research affirm that multimedia technology has transformed science learning; with these resources accessible through a national portal, radically different learning experiences ensued. These findings raise serious implications for teacher education and professional development in ensuring that teachers acquire sound science content and pedagogical knowledge as well as practical strategies for utilising technology‐rich environments, as this is likely to become the norm. Harnessing the fullest potential that information and communication technology, multimedia and e‐learning portals can offer starts by addressing these challenges. 相似文献
112.
Abstract A study of the effect of fatigue on the mechanical characteristics of running during a 10,000 meter race was undertaken using high speed cinematography and a computer analysis technique. Eight highly skilled male subjects were filmed at four intervals throughout the event. An analysis of variance for trends was conducted for each of the dependent variables indicating the adjustments made by the runners that accompanied fatigue over the four stages of the event. Runners countered fatigue by changing sections of their total gait pattern (stride length, stride rate, segmental body positions) and reducing running velocity. Toward the end of the race the runners became less competent in the positioning of the foot and leg at foot-strike, which increased the potential for a retarding effect. A more extended lower limb increased the energy requirements of the recovery phase during the latter stages of the race. Fatigue caused these highly skilled runners to systematically alter their technique throughout the race. These adjustments, however, were not excessive. 相似文献
113.
114.
Randy Elliot Bennett Manfred Steffen Mark Kevin Singley Mary Morley Daniel Jacquemin 《Journal of Educational Measurement》1997,34(2):162-176
The first generation of computer-based tests depends largely on multiple-choice items and constructed-response questions that can be scored through literal matches with a key. This study evaluated scoring accuracy and item functioning for an open-ended response type where correct answers, posed as mathematical expressions, can take many different surface forms. Items were administered to 1,864 participants in field trials of a new admissions test for quantitatively oriented graduate programs. Results showed automatic scoring to approximate the accuracy of multiple-choice scanning, with all processing errors stemming from examinees improperly entering responses. In addition, the items functioned similarly in difficulty, item-total relations, and male-female performance differences to other response types being considered for the measure. 相似文献
115.
Randy Elliot Bennett Donald A. Rock Minhwei Wang 《Journal of Educational Measurement》1991,28(1):77-92
This study examined the relationship of multiple-choice and free-response items contained on the College Board's Advanced Placement Computer Science (APCS) examination. Confirmatory factor analysis was used to test the fit of a two-factor model where each item format marked its own factor. Results showed a single-factor solution to provide the most parsimonious fit in each of two random-half samples. This finding might be accounted for by several mechanisms, including overlap in the specific processes assessed by the multiple-choice and free-response items and the limited opportunity for skill differentiation afforded by the year-long APCS course. 相似文献