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Dreher Anika Kuntze Sebastian Lerman Stephen 《International Journal of Science and Mathematics Education》2015,14(2):363-382
Dealing with multiple representations and their connections plays a key role for learners to build up conceptual knowledge in the mathematics classroom. Hence, professional knowledge and views of mathematics teachers regarding the use of multiple representations certainly merit attention. In particular, investigating such views of preservice teachers affords identifying corresponding needs for teacher education. However, specific empirical research is scarce. Taking into account the possible role of culture, this study consequently focuses on views about using multiple representations held by more than 100 English and more than 200 German preservice teachers. The results indicate that there are culture-dependent aspects of preservice teachers’ views, but also that there are common needs for professional development.
相似文献2.
Aiso Heinze Anika Dreher Anke Lindmeier Carolin Niemand 《Zeitschrift für Erziehungswissenschaft》2016,19(2):329-349
Educational research has introduced different models for the professional knowledge of (pre-service) teachers. Existing studies show major differences regarding the construct of content knowledge, which is often conceptualized based on school subject knowledge and varies with respect to academic content knowledge. The latter indicates that the question of what content knowledge teachers need has yet to be resolved. This question is particularly relevant from the perspective of teacher education at universities, since pre-service teachers for secondary schools are usually taught academic content knowledge. In this article we suggest a model of the discipline-specific teacher knowledge that includes pedagogical content knowledge (PCK) alongside two constructs of content knowledge: academic content knowledge (CK) and school-related content knowledge (SRCK). Findings from two studies for the subject area mathematics confirm that the components are empirically separable and that the three-dimensional model is superior to the two-dimensional model (CK, PCK). Moreover, the new construct SRCK holds potential for the investigation of the knowledge of pre-service teachers. 相似文献
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It has become common practice among U.S. business schools to require potential students to have substantial work experience before admission to MBA programs. Yet, the benefits of this selection criterion have not been fully articulated nor empirically examined. This article explores the relationships between years of pre-MBA work experience and post-MBA career outcomes. Specifically, we examine the effects of prior work experience on cash compensation, career satisfaction, number of promotions, and individuals' propensity to stay with their first post-MBA employer. Results indicate that previous work experience is not significantly related to graduates' tenure in their first post-MBA position. Furthermore, counter to conventional wisdom, MBAs without prior work experience were more satisfied, had received more promotions, and earned more cash compensation than some of their more experienced counterparts. The implications of these findings for those responsible for admissions in graduate professional schools and for corporate recruiters are discussed, along with suggestions for future research. 相似文献
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Are our college and university theatres reluctant to act upon their obligation to tomorrow's playwrights? This article, based on a national survey, shows the attitude of the Central States area toward this problem. 相似文献
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G.W.A. Dummer Carl Dreher George W. Bartlett Richard Veith Dan Rather Mickey Herskowitz 《Communication Booknotes Quarterly》2013,44(11):132-135
G.W.A. Dummer's Electronic Inventions: 1745-1976 (Oxford, England: Pergamon Press, 1976—£5.50 or $10.00) Carl Dreher's Sarnoff: An American Success (New York: Quadrangle/ New York Times Book Co., 1977—$12.50) George W. Bartlett, ed. NAB Engineering Handbook (Washington: National Association of Broadcasters, 1975—$45.00; $30.00 to NAB and BEA members) Richard Veith's Talk-Back TV: Two-Way Cable Television (Blue Ridge Summit. Pa.: TAB Books, 1976—$9.95/5.95) Dan Rather with Mickey Herskowitz' The Camera Never Blinks: Adventures of a TV Journalist (New York: Morros, 1977—$10.00) F. Gifford's Tape: A Radio News Handbook (New York: Hastings House, 1977—$12.95/6.95) F. Earle Barcus' Children's Television: An Analysis of Programming and Advertising (New York: Praeger Special Studies, 1977—price not given, but likely around $18.00) Douglas Davis and Allison Simmons' The New Television: A Public/Private Art (Cambridge, Mass.: MIT Press, 1977—$14.95) The Videophile's Newsletter (Jim Lowe, 2014 South Magnolia Drive, Tallahassee, Fla. 32301—$7.50 for five issues) Separations Procedures in the Telephone Industry: The Historical Origins of a Public Policy, by James W. Sichter (January 1977, Publication P-77-2, 146 pp. $23.40, paper) The Communications Act Policy Toward Competition: The Sound of One Hand Clapping by Hamilton Loeb (March 1977, Working Paper W-77-1, 68 pp., $ 10.90) Broadcasting: The Next Ten Years (New York: National Broadcasting Co., Department of Corporate Planning, 1977—apparently free on request, paper) NFLCP Newsletter (P.O. Box 119, Cambridge, Mass. 02142—$7.50 annually, bimonthly; $15.00 to organizations) Gary Gerani and Paul H. Schulman's Fantastic Television (New York: Harmony Books/Crown Publishers, 1977—$12.95/5.95) 相似文献
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Effects of marijuana use during pregnancy on newborn cry 总被引：1，自引：0，他引：1
The effects of maternal marijuana use on the newborn cry were studied in Jamaica, where it was possible to rule out confounding factors such as the use of other substances and demographic variables that have clouded previous studies and where higher dosages may make the effects more visible. The acoustic characteristics of the cries of 20 infants of marijuana users and 20 controls were analyzed. The cries of the infants of marijuana users were shorter, had a higher percentage of dysphonation, a higher and more variable fundamental frequency, and a lower first formant than controls. There was also a dose response relation between the first formant and marijuana use. We suggest that heavy marijuana use affects the neurophysiological integrity of the infant. 相似文献
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Anika Dreher Sebastian Kuntze Stephen Lerman 《International Journal of Science and Mathematics Education》2016,14(2):363-382
Dealing with multiple representations and their connections plays a key role for learners to build up conceptual knowledge in the mathematics classroom. Hence, professional knowledge and views of mathematics teachers regarding the use of multiple representations certainly merit attention. In particular, investigating such views of preservice teachers affords identifying corresponding needs for teacher education. However, specific empirical research is scarce. Taking into account the possible role of culture, this study consequently focuses on views about using multiple representations held by more than 100 English and more than 200 German preservice teachers. The results indicate that there are culture-dependent aspects of preservice teachers’ views, but also that there are common needs for professional development. 相似文献