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91.
Variability analysis has been used to understand how competitive constraints shape different behaviours in team sports. In this study, we analysed and compared variability of tactical performance indices in players within complex I at two different competitive levels in volleyball. We also examined whether variability was influenced by set type and period. Eight matches from the 2012 Olympics competition and from the Portuguese national league in the 2014–2015 season were analysed (1496 rallies). Variability of setting conditions, attack zone, attack tempo and block opposition was assessed using Shannon entropy measures. Magnitude-based inferences were used to analyse the practical significance of compared values of selected variables. Results showed differences between elite and national teams for all variables, which were co-adapted to the competitive constraints of set type and set periods. Elite teams exploited system stability in setting conditions and block opposition, but greater unpredictability in zone and tempo of attack. These findings suggest that uncertainty in attacking actions was a key factor that could only be achieved with greater performance stability in other game actions. Data suggested how coaches could help setters develop the capacity to play at faster tempos, diversifying attack zones, especially at critical moments in competition.  相似文献   
92.
The purpose of our study is to investigate reform policy, specifically a proposed third grade reading retention policy within the Borderlands. Under this policy, students not performing proficiently on the third grade reading standardized exam will be automatically retained in the third grade. The research methods and approach used in this study include an equity analysis formed by combining two steps across a Borderland county in New Mexico. The first step is a regression analysis to answer if access to early childhood education and access to highly qualified teachers inform differences in third grade reading scores, and the second step uses a LatCrit informed Spatial Analysis to create an equity index, to see how equity varies across the spaces of elementary schools. This allows us to essentially map Third Grade Reading Retention Reform Policy in the Borderlands. The setting of the study is in the U.S. Southwest Borderlands, specifically Doña Ana County, which borders Texas and Mexico, in southern New Mexico. Up to a quarter of the population is under the age of 18, two thirds (66.6%) of the population is Latino, and half of the population speaks a language other than English at home. Implications from this study include, for policy makers, policy considerations that come from a non-deficit thinking perspective and focus on systemic considerations to improving educational equity. Given that the setting demographically mirrors much of the state of New Mexico, as well as demographic shifts across communities throughout the U.S., this study provides further considerations for key systemic changes to improving academic measures like reading scores.  相似文献   
93.
This is a longitudinal study that focuses on blog-writing for the purpose of self-assessing competencies, and which was carried out within the practicum of a degree course in Primary Education Teaching at the University of Barcelona. Over the course of three academic years, students and a teacher have used a Platform 2.0 program, specially created for the study, to reflect on their learning processes and to self-assess with respect to the benchmark competences selected. The results show, first, a significant increase in students’ levels of awareness of their own competences, thanks to the optimisation of their communicative competency to explain same, and guided by the teacher’s feedback; and second, a growing level of satisfaction that can be observed in the assessment surveys on the process implemented.  相似文献   
94.
Active Learning and Democratic Behavior in Guatemalan Rural Primary Schools   总被引:1,自引:0,他引:1  
Emerging democracies such as Guatemala are beginning to experiment with active learning methodologies to improve learning and encourage democratic behavior among children. However, there exists little information on the effects of different classroom environments on children's behavior in developing countries. This study uses focused classroom observations to examine differences in the democratic behavior of children of different genders and ethnicity attending traditional rural schools and those attending rural schools with an experimental active learning program. Results show that children in the experimental program engage in significantly more democratic behaviors than their counterparts and these behaviors are related to participation in small group activities. Within the active learning program, greater democratic behavior and small group participation are also related to higher reading achievement at the classroom level.  相似文献   
95.
This paper describes the development, validation, and uses of the Collaborative Computing Observation Instrument (C-COI), a web-based analysis instrument that classifies individual and/or collaborative behaviors of students during computing problem-solving (e.g. coding, programming). The C-COI analyzes data gathered through video and audio screen recording software that captures students’ computer screens as they program, and their conversations with their peers or adults. The instrument allows researchers to organize and quantify these data to track behavioral patterns that could be further analyzed for deeper understanding of persistence and/or collaborative interactions. The article provides a rationale for the C-COI including the development of a theoretical framework for measuring collaborative interactions in computer-mediated environments. This theoretical framework relied on the computer-supported collaborative learning literature related to adaptive help seeking, the joint problem-solving space in which collaborative computing occurs, and conversations related to outcomes and products of computational activities. Instrument development and validation also included ongoing advisory board feedback from experts in computer science, collaborative learning, and K-12 computing as well as classroom observations to test out the constructs in the C-COI. These processes resulted in an instrument with rigorous validation procedures and a high inter-rater reliability.  相似文献   
96.
The focus on professional noticing in mathematics education has recently gained increased interest as researchers work to understand how and what is noticed and how this translates into practice. Much of this work has focused on the professional noticing practices of inservice teachers and preservice teachers, with less attention focused on those educating teachers. This research explores how novice mathematics teacher educators professionally notice as they engage in teaching experiments and create models of student’s mathematical thinking. Findings indicate the novice teacher educators are including some evaluative comments in their professional noticing practices but lack in-depth interpretive analysis about student thinking and rarely make connections between student’s thinking and the broader principles of teaching and learning. These findings provide evidence for the importance of supporting teacher educators with developing their abilities to professionally notice.  相似文献   
97.
This study investigated whether self‐efficacy influenced students’ educational outcomes in introductory‐level economics courses. First, this study investigated the correlations between problem‐solving self‐efficacy, academic self‐efficacy, and motivation. Second, this study investigated whether problem‐solving and academic self‐efficacy served as predictors of students’ motivation, test performance, and expected grade. Correlational analyses suggest that problem‐solving and academic self‐efficacy are correlated with student motivation. Results show that problem‐solving self‐efficacy was a predictor of student motivation and test performance. Academic self‐efficacy and problem‐solving self‐efficacy were also predictors of their expected grade. Implications and future directions for economics education are also discussed.  相似文献   
98.
Two instructional experiments used randomized, controlled designs to evaluate the effectiveness of writing instruction for students with carefully diagnosed dyslexia, which is both an oral reading and writing disorder, characterized by impaired word decoding, reading, and spelling. In Study 1 (4th to 6th grade sample and 7th to 9th grade sample), students were randomly assigned to orthographic or morphological spelling treatment but all students were taught strategies for planning, writing, and reviewing/revising narrative and expository texts. Both treatments resulted in improvement on three measures of spelling and one measure of composition. Morphological treatment resulted in better improvement in spelling pseudowords, whereas orthographic treatment resulted in better improvement in rate of reading pseudowords. In Study 2 (4th to 6th grade sample), students were randomly assigned to explicit language treatment (phonological working memory + phonological-orthographic spelling + science report writing training) or nonverbal problem solving treatment (virtual reality-based computer simulation, drawing maps, and building clay models). Both treatments used science content material and resulted in significant improvement in spelling and reading pseudowords (accuracy and rate). The surprising finding was that hands-on, engaging science problem solving led to more improvement in phonological working memory than did specialized phonological instruction. Only when spelling instruction emphasized orthography or morphology (Study 1) did real word spelling improve. Preparation of this chapter was supported by Grant Nos. HD25858 and P50 33812 from the National Institute of Child Health and Human Development (NICHD). In Study 1 teaching assistants included Sylvia Abbott, Marci Anderson-Youngstrom, Belle Chennault, Kate Eschen, Noelia Garcia, Sandra Hiramatsu, Lynn Junell, Julia Kim, Stephanie King, Shin-Ju (Cindy) Lin, Rebecca Metzger, Heather Murphy, Jennifer Norton, Sue Palewicz, Rebecca Pirie, and Suzanna West. Also on the assessment team were Sylvia Abbott, Belle Chenault, Kate Eschen, and Rebecca Pirie. Certified teachers Diana Hoffer and Christina Johnson implemented the composition lessons written by the first author. In Study 2, teaching assistants included Nicole Alston-Abel, Leah Altemeier, Wade Altom, Marci Anderson-Youngstrom, Annie Boyd, Nicole Garcia, Laura Gould, Marta Holsinger, Yen-Ling Lee, Shin-Ju (Cindy) Lin, Laurie McCarthy, Heather Murphy, Hema O’Shea, Michelle Proux, Kristine Tardiff, and Kari Terjeson. Janine Jones supervised the assessment team. Margaret McShane and Doug Stock served as administrative assistants.  相似文献   
99.
There have been significant changes in the racial/ethnic and linguistic background of students attending public schools in the United States. The number of public‐school students who are English language learners (ELLs) participating in programs of language assistance has more than doubled over the past two decades. In 1993–1994, 5.1% of public‐school students in the United States were ELLs, or an estimated 2.1 million students. As of 2014–2015, 9.4% of students were ELLs, or an estimated 4.6 million students. It is estimated that by 2030, upward of 40% of school children will speak English as a second language. Meeting the needs of students who are not proficient in English is challenging for school professionals and even more so if they are identified for special services. Researchers have found that ELL students live in situations with numerous high‐risk factors, including poverty, inadequate schools, poor and violent neighborhoods, and limited access to adequate health care, mental health services, and schools. As a group, these students are more likely to underperform academically, have a lower grade point average, and drop out of school compared to non‐ELL Latino students.  相似文献   
100.
This article reviews the literature on the development of children of minority status from birth to 3 years of age (infants). 5 major sources of influence on the developmental outcome of minority infants are proposed: cultural beliefs and caregiving practices, health status and health care practices, family structure and characteristics, socioeconomic factors, and biological factors. It is suggested that differences exist between minority and Anglo families in their developmental goals and interactions during the infancy period. The health status of some minority groups places these infants in an at-risk category for neurodevelopmental problems. The family context is characterized by younger mothers, a higher percentage of single heads of households, but also large, extended families. Socioeconomic factors have a pervasive influence on both infants and parents, and the contribution of biological factors is suggested but poorly understood. It is concluded that these factors act synergistically to place these infants in alternative (not necessarily deviant) developmental pathways, or in "at-risk" categories for neurodevelopmental problems, while canalization processes are operating to insure that major developmental milestones are achieved.  相似文献   
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