Crosscutting concepts and achievement: Is a sense of size and scale related to achievement in science and mathematics?     

Katherine Chesnutt  M. Gail Jones  Elysa N. Corin  Rebecca Hite  Gina Childers  Mariana P. Perez  Emily Cayton  Megan Ennes 《科学教学研究杂志》2019,56(3):302-321

This study examined the relationship between students' (N = 229) concepts of size and scale and students' achievement in science and mathematics over a 3-year period. Size and scale are considered one of the big ideas in science that permeates disparate science and mathematics content areas, yet little is known about the relationship between students' conceptualization of size and scale and students' achievement in science and mathematics. The study used a modified panel longitudinal design to follow the same class of students over a 3-year period. The goal was to explore whether understandings of size and scale are related to achievement in mathematics and science. Results indicated a strong positive significant relationship existed between students' understanding of size and scale and students' science achievement in grades 5 and 8. There was a positive significant relationship between students' concepts of size and scale and students' mathematics achievement in grades 5, 6, 7, and 8. An examination of the relationships is included as well as a discussion of the integration of crosscutting concepts into science and mathematics instruction as a way to support deep learning.  相似文献   

Die Klasse an die Universit?t, die Masse an die anderen Hochschulen?     

Dr. Jochen Kramer  Prof. Dr. Gabriel Nagy  Prof. Dr. Ulrich Trautwein  Prof. Dr. Oliver L??dtke  Prof. Dr. Kathrin Jonkmann  Prof. Dr. Kai Maaz  Prof. Dr. Rainer Treptow 《Zeitschrift für Erziehungswissenschaft》2011,14(3):465-487

In Germany, different types of university-level institutions are available for tertiary education: traditional universities (Universit?ten) and??since the 1970s??universities of applied science (Fachhochschulen) as well as universities of cooperative education (Berufsakademien). The present study investigates differences in key areas related to students?? academic choices and success: do students at different types of university differ significantly in terms of cognitive performance, personality or social background? We compared N?=?1.230 students at traditional universities, universities of applied science, and universities of cooperative education (Baden-W??rttemberg Cooperative State University) on the basis of a large scale longitudinal study in the German federal state of Baden-W??rttemberg. Students of the different university types differed significantly in all three key areas (cognitive performance, personality, and social background) within the fields of technical sciences and economics. We determine the relative importance of these key areas for differences between university types and we discuss the implications of our findings.  相似文献   

Child writers' construction and reconstruction of single sentences and construction of multi-sentence texts: contributions of syntax and transcription to translation     

Berninger VW  Nagy W  Beers S 《Reading and writing》2011,24(2):151-182

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Geht’s auch mit der Maus? – Eine Methodenstudie zu Online-Befragungen in der Jugendforschung     

Rüdiger Heim  Svenja Konowalczyk  Mariana Grgic  Miriam Seyda  Ulrike Burrmann  Thomas Rauschenbach 《Zeitschrift für Erziehungswissenschaft》2016,19(4):783-805

While internet based surveys have gained importance in recent years, their use in adolescent related research is rare at best. The present paper offers an overview of advantages and disadvantages of online surveys and discusses their use in regard to the questioning of adolescents. In a comparison between two random samples of 13 to 17 year olds, we examine how differences between a telephone (N?= 1,784) and an online (N?= 1,652) survey materialize in regard to the coverage rate, discontinuation behavior, and item-non-response. The sampling is analyzed further with regard to sociodemographic differences. While there are no expected coverage problems for the adolescent target group, the results show that adolescents from educated families, as well as those with a migration background, took part more often in the online survey as opposed to the telephone survey. Also, a more intensive mobile use of the internet, as well as in part greater sports activity, is connected to a higher willingness to take part in the survey which suggests that the survey topic influences the willingness to participate.  相似文献   

Using Megaplanning in CSO Projects— Bringing Social Sectors Together for Measurable and Sustainable Social Impact     

Silvia Uranga  Mariana C. Lucellas 《Performance Improvement Quarterly》2005,18(3):111-116

ABSTRACT Civil Society Organizations (CSO) can improve their effectiveness and add measurable value to society by using a megaplanning approach as the guiding criteria for their organizational planning. This article shows how Asociación Conciencia, a leading Argentinean CSO, has used megaplanning to clarify its vision, mission, align its goals and programs and update its mission and programs over more than twenty years of critical social changes in Argentina.  相似文献   

Isokinetic ankle eversion and inversion strength profiling of female ballet dancers     

Philip Nagy  Chris Brogden  Matt Greig 《Journal of sports sciences》2021,39(1):1-9

ABSTRACT

Ankle injuries are highly prevalent in ballet, with strength highlighted as a primary risk factor. To profile ankle strength, fourteen female ballet dancers (age: 19.29 ± 1.59 years) completed an isokinetic testing protocol comprising concentric eversion (CON_EV) and inversion (CON_INV), and, eccentric inversion (ECC_INV) trials at four angular velocities (30° · s^?1, 60° · s^?1, 90° · s^?1, 120° · s^?1) for both the dominant and non-dominant limb. In addition to Peak Torque (PT) and the corresponding Dynamic Control Ratios (DCRs), angle-specific derivatives of strength (AST) and Functional Range (FR) were calculated. There was no evidence of any significant bilateral strength asymmetry (p = 0.90) across all metrics, and no significant interactions with limb and contraction mode or velocity. A significant main effect for contraction mode (p = 0.001) highlighted greater ECC_INV strength – which was maintained with increasing isokinetic velocity – in contrast to reductions in CON_EV and CON_INV strength. Specifically, dancers are ECC_INV dominant at angular velocities greater than 60° · s^?1, which is likely to be characteristic of most functional tasks. The lack of bilateral asymmetry may be attributed to dance training interventions that facilitate bilateral development, but ipsilateral mode and velocity-specific asymmetries have implications for injury risk and the training needs of female ballet dancers.  相似文献   

The Role of Action Research in Fostering Culturally-Responsive Practices in a Preschool Classroom     

Mariana Souto-Manning  Christina Hanson Mitchell 《Early Childhood Education Journal》2010,37(4):269-277

Early childhood teachers and educational programs are expected to be the primary resources as children experience different and sometimes conflicting cultural contexts. Early educators can play a paramount role as young children move through fluid identities and start recognizing and navigating within and across spaces of cultural differences—e.g., between home cultures and the socially-dominant school culture. In this sense, we draw attention to a multi-year action research study, paying particular attention to the process whereby an early childhood teacher investigated, problematized, and challenged the nature of curriculum and practices in a diverse preschool classroom. We focus on the role of action research in fostering culturally-relevant teaching. As we do so, we analyze an early childhood teacher’s shifting perceptions of what it means to engage in culturally-relevant teaching, respecting and honoring cultural diversities.  相似文献   

Detection of Catabacter hongkongensis in polluted European water samples     

Francesc Codony  Bárbara Adrados  Leonardo Martín Pérez  Mariana Fittipaldi  Jordi Morató 《Journal of Zhejiang University. Science. B》2009,10(12):867-869

The Catabacteriaceae is a new bacterial family with a unique member: Catabacter hongkongensis is a strictly anaerobic, non-sporulating, Gram-positive coccobacillus that is phylogenetically related to some clostridial clusters. Little is known of its epidemiology and environmental distribution, but the inclusion of its 16S rRNA gene sequence in GenBank has allowed it to be detected qualitatively. As a first approach for prospective surveys, a real-time polymerase chain reaction (PCR) procedure to identify C. hongkongensis has been developed. The presence of Catabacteriaceae in 29 water bodies subjected to possible human or animal impact has been investigated. Four of them were positive. The results confirm that highly polluted water can contain C. hongkongensis.  相似文献   

Syntactic complexity as a predictor of adolescent writing quality: Which measures? Which genre?     

Scott F. Beers  William E. Nagy 《Reading and writing》2009,22(2):185-200

This study examined the relationship of different measures of syntactic complexity with rated quality for two genres of text produced by middle school students. It was hypothesized that different measures would be associated with distinct aspects of syntactic complexity; words per clause with greater use of structures more typical of expository texts, and clauses per T-unit with structures more typical of conversational or narrative registers. A sample of 41 seventh and eighth grade students from suburban middle schools composed a narrative and persuasive essays. Texts were rated for quality and coded for syntactic features including words per clause and clauses per T-unit. Syntactic complexity as measured in words per clause was positively correlated with quality for essays but not for narratives. Clauses per T-unit was positively correlated with quality for narratives, but negatively correlated with quality for essays. The relationships between syntactic complexity and text quality were thus found to be dependent both on the genre of the text, and the measure of syntactic complexity used.  相似文献   

Using the onto-semiotic approach to identify and analyze mathematical meaning when transiting between different coordinate systems in a multivariate context     

Mariana Montiel  Miguel R. Wilhelmi  Draga Vidakovic  Iwan Elstak 《Educational Studies in Mathematics》2009,72(2):139-160

The main objective of this paper is to apply the onto-semiotic approach to analyze the mathematical concept of different coordinate systems, as well as some situations and university students’ actions related to these coordinate systems. The identification of objects that emerge from the mathematical activity and a first intent to describe an epistemic network that relates to this activity were carried out. Multivariate calculus students’ responses to questions involving single and multivariate functions in polar, cylindrical, and spherical coordinates were used to classify semiotic functions that relate the different mathematical objects.  相似文献