共查询到20条相似文献，搜索用时 31 毫秒
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Ilana Seidel Horn 《学习科学杂志》2013,22(1):37-79
Abstract This article examines the social nature of teachers' conceptions by showing how teachers frame the “mismatch” of students' perceived abilities and the intended school curriculum through conversational category systems. This study compares the conversations of 2 groups of high school mathematics teachers addressing the Mismatch Problem when implementing equity-geared reforms. Although East High teachers challenged conceptions that were not aligned with a reform, South High teachers reworked a reform mandate to align with their existing conceptions. This research found that the teachers' conversational category systems modeled problems of practice; communicated assumptions about students, subject, and teaching; and were ultimately reflected in the curriculum. Because East High teachers supported greater numbers of students' success in advanced mathematics, this study considers the relation between teachers' understandings of student learning and the success of equity-geared math reforms. In addition, this study contributes to the understanding of how teacher conceptions of students are negotiated and reified in context, specifically through interactions with colleagues and experiences with school reform. 相似文献
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《英语大王(小学)》2014,(3):20-23
It＇s warmer and warmer（越来越暖和） in spring. Some kids are going to the park. Will you go with them？ 相似文献
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Harrington-lueker D 《The American school board journal》1991,178(5):18-22
The proposal of the school chancellor in New York City to dispense condoms to the city's 261,000 high school students met with protests from parents and religious groups that espouse abstinence and postponement of sexual activity. In Philadelphia there was a tumultuous meeting of the school board and AIDS prevention advocates. The promotion of condoms for AIDS prevention has become controversial, some claiming that it promotes promiscuity. In February 1991, there were 167,803 AIDS cases reported to the Centers for Disease Control of which 659 cases involved patients aged 13-19, an increase of 173 from the previous year. 1/5 of AIDS victims are in their 20s, and many more teenagers could be infected because of the long incubation period. In New York City 30% of cases are in the 20-29 age group with blacks, Hispanics, runaways, and teen prostitutes disproportionately affected. 37% of teen cases occur in areas outside of major cities. Gonorrhea, syphilis, chlamydia, and herpes have also increased to epidemic levels. There are 35 million people aged 10-19 whose number will increase by 10% in the 1990s, and they are facing a high risk of HIV infection. 53% of girls aged 15-19 were sexually active in 1988 increasing from 47% in 1982. 58% reported 2 or more sexual partners during that year, and few of them used condoms on a regular basis. Frank sex education programs have been adopted extensively, but behavior modification is the main issue. Some schools have provided condoms directly to students after parental consent. The school board of San Francisco faces a decision on providing condoms to students (85% from ethnic minorities) via a clinic or vending machines in restrooms. The recommendations of a Philadelphia task force also awaits school board action. In Los Angeles and Brookline, Massachusetts, a similar decision is pending. In Canada, condom vending machines have been installed in high schools in British Columbia, Ottawa, and Toronto. 相似文献
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