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Research has shown a positive relationship between academic engaged time (AET), academic learning time (ALT) and student achievement. Previous work has reported a relatively non‐intrusive, cost‐effective method for increasing AET in the classroom involving the presentation of research information followed by feedback to teachers of students’ AET in their classes. This study aimed to replicate these findings in a primary school setting and to establish what effects the information plus feedback had on teachers’ instructional behaviours which have been found to correlate with students’ AET and ALT. In addition, we looked at the effects of more precise feedback based on students’ task difficulty measures. The results provided strong support for the utility and efficacy of information plus feedback as a method for increasing student AET and ALT and for enabling teachers to change their instructional behaviours in the direction of published research findings.  相似文献   
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Martin Clifford's Microphones: How They Work and How to Use Them (Blue Ridge Summit, Pa.: TAB Books, 1977—$8.95/ 5.95)

James Carroll and Ronald Sherriffs, TV Lighting Handbook ($12.95, 226 pp.)

Harry Kybett, The Complete Handbook of Videocassette Recorders ($9.95/5.95, 280 pp.)

Dave Ingram, The Complete Handbook of Slow-Scan TV ($14.95/9.95, 304 pp.)

G. Paul Smeyak's Broadcast News Writing (Columbus, Ohio: Grid Publishing, 1977—$7.95, paper)  相似文献   
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Robert Lee Chartrand and James W. Norentz, Jr., eds. Information Technology Serving, Society (Oxford and New York: Pergamon Press, 1979—E12.50/$25.00)

Rosario Joseph Tosiello, The Birth and Early Years of the Bell Telephone System: 1376-1880 (New York: Aicno Press, 1979—$32.00)

James E. Brittain, ed. Turning Points in American Electrical History (New York: Institute of Electrical and Electronic Engineers Press [dist. by John Wiley], 1977– $20.00, paper)

Harry L. Van Trees, ed. Satellite Communications (New York: IEEE/John Wiley, 1979—$27.00, paper with a hardback edition available)

Dave Ingram's Oscar: The Ham Radio Satellites (Blue Ridge Summit, Pa: Tab Books, 1979—$8.95/4.95)

Clayton Hallmark's How to Repair Old-Time Radios (Blue Ridge Summit, Pa.: Tab Books, 1979—$12.95/7.95)

Telecommunications Law Reform (American Enterprise Institute for Public Policy Research, 1150 17th St. NW, Washington, D.C. 20036 —price not given, paper)  相似文献   
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Often girls are the objects of the camera’s lens and subjects of the researcher’s gaze. This article describes a qualitative study using a collaborative, creative and critical methodology to explore girls’ perspectives on gender, citizenship and schooling. The seven adolescent girl participants used Photovoice to engage with their roles as girl-citizens. Despite Canada’s international reputation as a leader in gender equality, evidence reveals that challenges still prevent their full participation, particularly in formal politics. This research raises questions about what life is like for girls and women in Canada beyond the rhetoric and global rankings, and adds to the often disconnected bodies of literature on girlhood, citizenship and education.  相似文献   
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This paper explores Canadian engineering employers’ perceptions of and experiences with internationally educated engineers (recent immigrants to Canada) employed in their organisations for varying lengths of time. Qualitative data were collected from employers using focus group methodology. Findings reflected employers’ observations of culturally different behaviours and characteristics in their internationally educated employees, employers’ reactions to cultural differences ranging from negative attributions to tolerance, and the implementation of largely ad hoc intra-organisational strategies for managing cultural differences in employer–employee relationships. Findings exposed the lack of corporate intercultural competency in the Canadian engineering profession. Equity and gatekeeping implications are discussed.  相似文献   
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