Intuitive nonexamples: the case of triangles     

Pessia Tsamir  Dina Tirosh  Esther Levenson 《Educational Studies in Mathematics》2008,69(2):81-95

In this paper we examine the possibility of differentiating between two types of nonexamples. The first type, intuitive nonexamples, consists of nonexamples which are intuitively accepted as such. That is, children immediately identify them as nonexamples. The second type, non-intuitive nonexamples, consists of nonexamples that bear a significant similarity to valid examples of the concept, and consequently are more often mistakenly identified as examples. We describe and discuss these notions and present a study regarding kindergarten children’s grasp of nonexamples of triangles.

Esther LevensonEmail:

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Science Teachers’ Perceived Benefits of an Out‐of‐school Enrichment Programme: Identity needs and university affordances     

April L. Luehmann  Dina Markowitz 《International Journal of Science Education》2013,35(9):1133-1161

Science enrichment programmes housed outside traditional school settings offer unique opportunities to access and use authentic scientific tools and practices, especially for urban students whose school science experiences often lack resources. Yet opportunities to access these tools and practices are realized only when science teachers value them sufficiently to take advantage of them. This study examines how eight urban secondary science teachers evaluated a specific out‐of‐school science enrichment programme—a one‐year partnership with a local university science outreach centre, which culminated in a half‐day laboratory experience for their students. Teachers’ perceptions were captured through interviews and surveys. Findings indicate that these teachers came to identify and value many of the potential benefits for out‐of‐school enrichment programmes reported in the literature as well as some additional ones. The teachers’ also showed a shift over time with respect to their perceptions of the value of the out‐of‐school experience, moving from an initial focus on increasing test scores toward a greater appreciation for its impact on students’ motivation and identity development. The study offers insight into secondary science students’ and teachers’ identity needs, and what universities can offer to address them.  相似文献   

Viewing the viewers: Ten video cases of children's television viewing behaviors     

Dina L.G. Borzekowski  Thomas N. Robinson 《广播与电子媒介杂志》2013,57(4):506-528

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VERBAL JUSTIFICATION—IS IT A PROOF? SECONDARY SCHOOL TEACHERS’ PERCEPTIONS     

Michal Tabach  Ruthi Barkai  Pessia Tsamir  Dina Tirosh  Tommy Dreyfus  Esther Levenson 《International Journal of Science and Mathematics Education》2010,8(6):1071-1090

According to reform documents, teachers are expected to teach proofs and proving in school mathematics. Research results indicate that high school students prefer verbal proofs to other formats. We found it interesting and important to examine the position of secondary school teachers with regard to verbal proofs. Fifty high school teachers were asked to prove various elementary number theory statements, to write correct and incorrect proofs that students may use, and to evaluate given justifications to statements from elementary number theory. While all the participants provided correct proofs to the statements, our findings indicate that teachers are not aware of students’ preference for verbal justifications. Also, about half of the teachers rejected correct verbal justifications. They claimed that these justifications lacked generality and are mere examples.  相似文献   

Depersonalization or cynicism, efficacy or inefficacy: what are the dimensions of teacher burnout?     

Silvia Simbula  Dina Guglielmi 《European Journal of Psychology of Education - EJPE》2010,25(3):301-314

This article seeks to contribute to the ongoing debate on the dimensionality of the burnout syndrome. Specifically, its aims are: (1) to investigate the role of efficacy beliefs using negatively worded inefficacy items instead of positive ones and (2) to establish whether depersonalization and cynicism can be considered two different dimensions of the teacher burnout syndrome. The results show that, compared with efficacy beliefs, inefficacy beliefs relate more strongly to the other burnout dimensions considered by the study (i.e., emotional exhaustion, depersonalization, and cynicism). Moreover, using partial disaggregation method, a better fit is found for the four-factor model with separate depersonalization and cynicism dimensions than for the three-factor model in which depersonalization and cynicism are collapsed into one factor. The article concludes that future research on teacher burnout should: (1) use the inefficacy scale as the “third dimension” of burnout, rather than the efficacy scale, and (2) include the cynicism and depersonalization constructs.  相似文献   

章鱼花园     

Dina Spanbock  Twilight 《高中生》2013,(22):26-27

我想潜到海里,躲在章鱼花园的绿阴下。"我和爸爸在起居室听着甲壳虫乐队的黑胶唱片播放《章鱼花园》这首歌。那时我大概只有六岁。那句歌词让我感到困惑。"海里怎么会有绿阴呢?"我问爸爸",海水下面并没有阴凉和日晒的区别啊!""  相似文献   

Intercultural learning in graduate studies at an Israeli college of education: Attitudes toward multiculturalism among Jewish and Arab students     

Lilach Lev Ari  Dina Laron 《Higher Education》2014,68(2):243-262

The purpose of the present study is to investigate the factors which affect attitudes towards multiculturalism among Jewish and Arab graduate students who experience intercultural learning in an Israeli-Jewish academic college of education. In Israeli society, it is in higher education institutions where young people from different ethnic groups first encounter the ‘others’. This is due to the structure of the Israeli elementary and secondary education system, which is divided into Jewish and Arab segregated sub-systems. In contrast, the country’s higher education institutions are open to everyone. The research population was composed of first and second year graduate students, all of whom were practicing teachers or involved in other educational work. Participants completed questionnaires and a smaller sample was also interviewed. All of the students are practicing teachers or involved in other educational work. Everyone perceived the college’s socio-cultural climate as an open and multicultural one in both years of study. However, these positive feelings characterized Jewish students to a larger extent than Arab students, while the socio-cultural aspect as well as the quality of the academic experience had a positive impact on multicultural attitudes primarily among Arab students. Thus, a multicultural climate is not enough to effect a positive change in entrenched attitudes toward multiculturalism. Multicultural education policy should also be reinforced through a formal academic curriculum, so as to set an example for ongoing social change which will further encourage graduate students—majority and minority alike—to implement their multicultural positive experiences in their own schools in the future.  相似文献   

DNA → RNA: What Do Students Think the Arrow Means?     

L. Kate Wright  J. Nick Fisk  Dina L. Newman 《CBE life sciences education》2014,13(2):338-348

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The language and literacy development of young dual language learners: A critical review   总被引：2，自引：0，他引：2  

Carol Scheffner Hammer  Erika Hoff  Yuuko Uchikoshi  Cristina Gillanders  Dina C. Castro  Lia E. Sandilos 《Early childhood research quarterly》2014

The number of children living in the United States who are learning two languages is increasing greatly. However, relatively little research has been conducted on the language and literacy development of dual language learners (DLLs), particularly during the early childhood years. To summarize the extant literature and guide future research, a critical analysis of the literature was conducted. A search of major databases for studies on young typically developing DLLs between 2000 and 2011 yielded 182 peer-reviewed articles.  相似文献   

Comparative effectiveness research designs: an analysis of terms and coverage in Medical Subject Headings (MeSH) and Emtree     

Tanja Bekhuis  Dina Demner-Fushman  Rebecca S. Crowley 《Journal of the Medical Library Association》2013,101(2):92-100

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