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1.
This study employed content analysis to examine 3 popular middle-grades mathematics curricula in the USA on the support they provide for teachers to implement concepts associated with variables in school mathematics. The results indicate that each of the 3 curricula provides some type of support for teachers, but in a varied amount and quality. More specifically, whereas the University of Chicago School Mathematics Project (UCSMP) curriculum provides support for teachers on several aspects of using variables in school mathematics, the support found in the Connected Mathematics 2 and the Math Connects curricula focused mainly on one conception of variables—namely, the use of variables as quantity that varies in the Connected Mathematics 2 curriculum and the use of variables as specific unknowns in the Math Connects curriculum. Overall, the UCSMP curriculum provides the most support for teachers, followed by the Connected Mathematics 2 curriculum, with the Math Connects curriculum recording the least support for teachers to enact variable concepts. It is worth pointing out that, although the 3 curricula collectively provide guidance for teachers to implement variable ideas within meaningful real-world contexts, the supports identified in the respective curriculum were not sufficient in addressing all of the areas that are essential for teaching the many concepts associated with variables in school mathematics effectively. Recommendations for curriculum developers and for international researchers with interest in the roles of variables in school mathematics are provided.  相似文献   

2.
This paper focuses on the curriculum links between statistics and science that teachers need to understand and apply in order to be effective teachers of the two fields of study. Meaningful statistics does not exist without context and science is the context for this paper. Although curriculum documents differ from country to country, this paper uses extracts from three countries: Australia, New Zealand and the USA. The statistical ideas from the Australian Curriculum: Mathematics, the New Zealand Mathematics and Statistics Curriculum and the US Common Core State Standards for Mathematics are linked to the relevant parts of the Australian Curriculum: Science, the New Zealand Science Curriculum and the US Next Generation Science Standards for States, by States. Teachers of mathematics need to be aware of the potential of science to provide meaningful contexts within which to set statistical investigations. Similarly, teachers of science, who are developing methods for implementing investigations and experiments in their classrooms, need to be aware of the close ties to statistical tools for decision-making.  相似文献   

3.
Adopting Maria Manzon’s theoretical framework, which draws on Foucault and proposes that comparative education as an academic field is socially constructed, I suggest that the field is neither stable nor well defined. To demonstrate this, I conduct a content analysis of the Comparative Education Review, using Klaus Krippendorff’s methodological framework to study comparative and international education (CIE) researchers’ understanding of the national—and of their related knowledge production in the field. Many comparativists express interests in multiple countries, and their knowledge production takes the form of individual country studies. The countries are habitually studied using a “problem approach” focusing on one specific aspect of the country under investigation and using an associated social science methodology deemed appropriate. Few comparativists are making explicit use of or reference to any methodology that is unique to comparative education. Efforts to catalog and systematize CIE research have demonstrated that the field is becoming so inclusive that it hardly is distinguishable from educational studies as a whole. Hence, I suggest that instead of speaking about unifying features of the field, it may be more relevant to speak about frequent elements, such as a focus on the national, and a knowledge production characterized by the academic practitioner who desires to improve the education systems studied. A third frequent element may be the focus on educational development, thus justifying the label of “comparative, international, and development education.” One challenge of the field is its dependence on Western social science discourses, which may be marginalizing other voices.  相似文献   

4.
Understanding academic vocabulary is essential to student success in school. Use of academic vocabulary words in writing is considered one of the strongest measures of how well a reader understands a given word. In theory, willingness to use academic vocabulary in writing indicates the complexity of acquiring representations of the word’s orthography, phonology, and semantics based on the word’s characteristics. In addition, a learner’s overall literacy skills should relate to whether they attempt to use words. In the present study, sixth graders (n = 66), seventh graders (n = 60), and eighth graders (n = 41) learned 25 academic vocabulary words in a supplementary academic vocabulary intervention and were then asked to use those words in short persuasive essay drafts. We measured whether these students attempted to use a word (a binary uses outcome) and the number of times a student used a word (a continuous attempts outcome) and used cross-classified random effects models to examine how (a) the orthographic, phonological, and semantic characteristics of words and (b) the students’ literacy-related characteristics related to their uses and attempts. For word characteristics, students were more likely to use and attempt high frequency than low frequency words. For student characteristics, students proficient on the state exam were more likely to use and attempt the words, and students learning English were less likely to attempt the words. Implications for vocabulary intervention and writing instruction are discussed.  相似文献   

5.
This meta-analysis synthesizes the last two decades of experimental and quasi-experimental research on reading instruction across academic contexts (e.g., social studies, science, mathematics, English language arts) for English learners (ELs) in grades 4 through 8, to determine (a) the overall effectiveness of reading instruction for upper elementary and middle school students who are ELs and (b) how the magnitude of the effect varies based on student, instructional, and study characteristics. The analysis included a total of 11 studies with 46 individual effect sizes and yielded a mean effect size of g?=?0.35 across all (i.e., standardized and unstandardized) reading measures, g?=?0.01 across standardized reading measures, and g?=?0.43 across unstandardized reading measures. For all reading, unstandardized reading, all vocabulary, and unstandardized vocabulary measures, results suggest that higher quality studies tended to have smaller effects, and these effects were even more evident for unstandardized measures (i.e., one unit increase in study quality was associated with decreased effects: g?=?0.21, g?=?0.30, g?=?0.24, g?=?0.30, respectively). For all comprehension measures, effects were larger for instruction that included both vocabulary and comprehension (g?=?0.39) than for instruction that focused on vocabulary alone (g?=?0.08). Results suggest the benefit of developing and refining high-impact approaches to reading instruction for ELs that can be delivered across content areas and grades.  相似文献   

6.
Reading skills are an important component of academic success for school-age youth, and are associated with increased academic performance and positive attitudes about school. The presence of an animal appears to reduce stress during reading. Therefore, the goal of this study was to assess the feasibility and effects of a 6-week after-school canine-assisted reading program in a public elementary school setting. Second-grade students were randomized to either an intervention group (n?=?14) in which they read to a registered therapy dog for 30 min once weekly for 6 weeks or a control group (n?=?14) with a standard classroom curriculum. Children’s reading skills were assessed biweekly and attitudes about reading were assessed pre- and post-intervention. The 6-week after-school canine-assisted reading program was feasible. Reading skill scores did not change significantly for either group. Although scores on recreational reading attitudes also did not change significantly for either group, the academic reading attitudes scores increased significantly in the intervention group (p?=?.002), but not in the control group (p?=?.06). These results support the benefits of an animal-assisted intervention for child literacy on children’s attitudes about reading and can inform future programs evaluating reading programs that include dogs.  相似文献   

7.
The purpose of this study was, first, to understand the item hierarchy regarding students’ understanding of scientific models and modeling (USM). Secondly, this study investigated Taiwanese students’ USM progression from 7th to 12th grade, and after participating in a model-based curriculum. The questionnaire items were developed based on 6 aspects of USM, namely, model type, model content, constructed nature of models, multiple models, change of models, and purpose of models. Moreover, 10 representations of models were included for surveying what a model is. Results show that the purpose of models and model type items covered a wide range of item difficulties. At the one end, items for the purpose of models are most likely to be endorsed by the students, except for the item “models are used to predict.” At the other end, the “model type” items tended to be difficult. The students were least likely to agree that models can be text, mathematical, or dynamic. The items of the constructed nature of models were consistently located above the average, while the change of models items were consistently located around the mean level of difficulty. In terms of the natural progression of USM, the results show significant differences between 7th grade and all grades above 10th, and between 8th grade and 12th grade. The students in the 7th grade intervention group performed better than the students in the 7th and 8th grades who received no special instruction on models.  相似文献   

8.
This article examines the productivity of both individuals and institutions, indexed through an examination of five educational psychology journals (Cognition and Instruction, Contemporary Educational Psychology, Educational Psychologist, Educational Psychology Review, and Journal of Educational Psychology) from 2009 to 2014. These results are discussed relative to four previous studies (Hsieh et al. Contemporary Educational Psychology, 29, 333–343, 2004; Jones et al. Contemporary Educational Psychology, 35, 11–16, 2010; Smith et al. Contemporary Educational Psychology, 23, 173–181, 1998; Contemporary Educational Psychology, 28, 422–430, 2003). Vanderbilt University and Fred Paas replaced the University of Maryland and Richard E. Mayer as the top research institution and author, respectively. Sixteen of the top 19 researchers’ institutions were outside the USA, compared to only 10 of the top 32 during 2003–2008 and three of the top 20 during 1991–1996. Educational psychology research continues the trend of becoming more international.  相似文献   

9.
Although education experts are increasingly advocating the incorporation of integrated Science, Technology, Engineering, and Mathematics (STEM) curriculum units to address limitations in much current STEM teaching and learning, a review of the literature reveals that more often than not such curriculum units are not mediating the construction of in-depth STEM knowledge. In this paper, we conjecture that the challenge of generating integrated STEM curriculum units that overcome this limitation and facilitate in-depth learning of and about STEM can be met by the use of three types of big ideas: within-discipline big ideas that have application in other STEM disciplines, cross-discipline big ideas, and encompassing big ideas. We provide a six-component framework (together with an example of the framework in action) that can be used to scaffold pre- and in-service teachers’ development of integrated STEM curriculum units based around these types of big ideas. The paper concludes by discussing possible directions for future research and development in this field.  相似文献   

10.
Children as readers of picture books and the ways they respond to, and make meaning from, such texts are the focus of this article, which reports on a small-scale study undertaken in Norway and Wales, UK. The theoretical framing of the research draws on concepts of the multimodal ensemble in picture books and of the reading event as part of a social practice. The research design was developed from the team’s analysis of two texts, Pappa by Svein Nyhus (1998) and What does Daddy Do? by Rachel Bright (2009). Twenty-four children, who were 7 and 8 years old, took part in the study. This was built around two reading events for each book, staged as an immediate response and as a guided response. The data subsequently collected were analysed according to three overarching organisational principles, as book world, real world and play world. For both Daddy and Pappa, the first reading event showed the children’s responses were mainly directed towards exploring the book world. On the second reading event, references to the real world predominated for Daddy, while for Pappa the book world was again dominant. Across both reading events and for both books, the playworld revealed those occasions when the children expanded the meaning of the story, demonstrating an inventive ability to play with the text. Overall, the children’s responses moved fluidly across the three worlds, showing them to be energetically making connections between the reading, their experience of books and their own lives.  相似文献   

11.
This essay explores the educational contribution of the Comtesse de Genlis’ Théâtre à l'usage des jeunes personnes [Theatre of Education] (1792/1779–1780), a four-volume collection of closet drama, in light of the social, political and cultural shifts occurring in France in the period prior to the French Revolution. In particular, in two plays from Theatre of Education, La Marchande de Modes [The Milliner] and Le Libraire [The Bookseller], Genlis depicts the bourgeoisie’s proper behaviour toward the aristocracy and its natural place in the world. Thus both plays exemplify the educational and the political role of Genlis, who attempts to tame the bourgeoisie through the twofold argument of proper education and effective parenthood, so as to keep alive the social order of the ancien régime.  相似文献   

12.
Measuring gifted and talented (GT) students’ perceptions of their GT label might seem to be a relatively straightforward affair. Most of this research uses survey methods that ask GT students to complete Likert scale or open-ended response questionnaires about their perceptions of the label and then presents results in clear and quantifiable terms, such as “X % of students hold positive perceptions of the GT label.” However, our qualitative study of GT students in two middle school social studies classrooms presents findings that not only trouble, but prompt questions about simple proclamations regarding GT students’ perceptions of the GT label. What we found was that given the opportunity to share their thoughts at length, this group of GT students expressed a range of often contradictory perceptions about their GT label. Students expressed multiple interpretations and perceptions of the GT label, as well as both embraced the label and rejected the label.  相似文献   

13.
Risk factors in early childhood have short as well as long term effects on child development. Researchers distinguish between vulnerabilities, which are biological predispositions and psychological characteristics of the child, and stressors, which are psychosocial circumstances in the environment. Crucial vulnerabilities and stressors are described and evaluated in the following essay. The number of influencing risk factors seems to be the best predictor to evaluate the impact on the developmental outcome. Thus, a combination of cumulative long lasting risk factors has the most negative impact on child development. The qualities of parent-child interactions and the enrichment of the (home) environment are the only factors which have a direct impact on child development. Therefore, interventions to minimize the influence of risk constellations should begin early, be long lasting and should focus on assuring a secure relationship for the child, in or outside the family.  相似文献   

14.
The increasing calls for diversity research signal a need to explore contemporary learning and instruction strategies that respond to diversity in courses and curricula. The major objective of this research was to measure the level of openness to diversity and challenge (ODC) among college students as a function of their perceived constructivist learning environment in traditional lecture-based courses (LBE) and seminars (SM). The study included 243 undergraduate students. Data were gathered using the Constructivist Learning in Higher Education Settings scale (CLHES), which measures students’ perceptions of the occurrence of constructivist practices in learning environments along three dimensions of constructive activity, teacher–student interaction and social activity, and the Openness to Diversity and Challenge scale. Structural equation modelling (SEM) results indicated a positive connection between the general factor of CLHES and ODC over and above several pre-entry variables such as gender and culture. According to a further SEM analysis, the social activity variable mainly explained the ODC variable whereas the teacher–student interaction factor was mainly connected to the constructive activity variable. Multivariate analysis of variance results indicated that students enrolled in SM perceived this environment as more constructivist and reported having higher levels of feelings of ODC than LBE students. Interpretation of these findings, in conjunction with theory, applications, and implications for future research are discussed.  相似文献   

15.
To report a rare case of fungal spondylodiscitis in a patient recovered from H7N9 virus infection and perform a literature review of the different characteristics of Candida and Aspergillus spondylodiscitis, we reviewed cases of spondylodiscitis caused by Candida and Aspergillus species. Data, including patients’ information, pathogenic species, treatment strategy, outcomes, and relapses, were collected and summarized. The characteristics of Candida and Aspergillus spondylodiscitis were compared to see if any differences in clinical features, management, or consequences could be detected. The subject of the case study was first misdiagnosed as having a vertebral tumor, and then, following open biopsy, was diagnosed as having fungal spondylodiscitis. The patient made a good recovery following radical debridement. Seventy-seven additional cases of Candida spondylodiscitis and 94 cases of Aspergillus spondylodiscitis were identified in the literature. Patients with Candida spondylodiscitis tended to have a better outcome than patients with Aspergillus spondylodiscitis (cure rate 92.3% vs. 70.2%). Candida was found more frequently (47.8%) than Aspergillus (26.7%) in blood cultures, while neurological deficits were observed more often in patients with Aspergillus spondylodiscitis (43.6% vs. 25.6%). Candida spinal infections were more often treated by radical debridement (60.5% vs. 39.6%). Patients with Candida spondylodiscitis have better outcomes, which may be associated with prompt recognition, radical surgical debridement, and azoles therapy. A good outcome can be expected in fungal spondylodiscitis with appropriate operations and anti-fungal drugs.  相似文献   

16.

Objective

The aim of this study was to compare complications and oncologic outcomes of patients undergoing laparoscopic distal pancreatectomy (LDP) and open distal pancreatectomy (LDP) at a single center.

Methods

Distal pancreatectomies performed for pancreatic ductal adenocarcinoma during a 4-year period were included in this study. A retrospective analysis of a database of this cohort was conducted.

Results

Twenty-two patients underwent LDP for pancreatic ductal adenocarcinoma, in comparison to seventy-six patients with comparable tumor characteristics treated by LDP. No patients with locally advanced lesions were included in this study. Comparing LDP group to LDP group, there were no significant differences in operation time (P=0.06) or blood loss (P=0.24). Complications (pancreatic fistula, P=0.62; intra-abdominal abscess, P=0.44; postpancreatectomy hemorrhage, P=0.34) were similar. There were no significant differences in the number of lymph nodes harvested (11.2±4.6 in LDP group vs. 14.4±5.5 in LDP group, P=0.44) nor the rate of patients with positive lymph nodes (36% in LDP group vs. 41% in LDP group, P=0.71). Incidence of positive margins was similar (9% in LDP group vs. 13% in LDP group, P=0.61). The mean overall survival time was (29.6±3.7) months for the LDP group and (27.6±2.1) months for LDP group. There was no difference in overall survival between the two groups (P=0.34).

Conclusions

LDP is a safe and effective treatment for selected patients with pancreatic ductal adenocarcinoma. A slow-compression of pancreas tissue with the GIA stapler is effective in preventing postoperative pancreatic fistula. The oncologic outcome is comparable with the conventional open approach. Laparoscopic radical antegrade modular pancreatosplenectomy contributed to oncological clearance.
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17.
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18.
Beliefs about knowledge have been found to relate to a variety of student outcomes and to vary across educational domains and instructional contexts. However, there are limited data on students’ beliefs about information and truth, vis-à-vis knowledge (i.e., epistemic beliefs) and how these beliefs differ across instructional settings. Undergraduates from two educational contexts, in the USA (n?=?240) and the Netherlands (n?=?72), participated in this study. While students in the USA were enrolled primarily in lecture and discussion classes, students in the Netherlands followed a problem-based learning curriculum. Beliefs about knowledge, information, and truth and their interrelations were examined across these two contexts through graphical and written justification tasks. Results from this exploratory study indicate that Dutch students were more likely than American students to depict knowledge, information, and truth as subjective and to define knowledge and information as synonymous. Commonalities and differences associated with educational backgrounds are considered in relation to instructional implications.  相似文献   

19.
A circular jet has broad and important applications in practical engineering. Most research in this area has focused on a free jet, a wall jet or a vertical jet in a bounded domain. In this study, the mean velocities of circular offset jets were studied for four jet exit Froude numbers (Fr), three offset heights (S) (S/d=1, 2, 3) and three submergence ratios (ht/S) (surface jet, mixed jet, and submerged jet) in a bounded basin. Based on the results, we propose a velocity decay formula for a circular jet. The lateral velocity spread was more consistent with Gaussian and Cauchy–Lorentz distributions than the vertical velocity. Moreover, Fr had little effect on the decay of the mean velocity for a circular jet when Re>1×104. The lateral and vertical spreads showed a quadratic relationship with the streamwise distance for different values of Fr at X/d<10. The positions of maximum mean velocity decay were independent of Fr and S/d when X/d<10. The spread rate was more uniform in the lateral direction than that in the vertical direction in a certain region for different S/d and ht/S. Therefore, the decay, spread, and maximum velocity position of the mean velocity for a circular offset jet can remain stable under different values of Fr, offset height, and submergence ratio.  相似文献   

20.
Institutions of higher education frequently acknowledge their role in contributing to the common good through their mission statements. The current literature suggests that in order to be effective mission statements must be clearly articulated and reflected in all the activities of the institution including its curriculum. Faculty members at Walden University developed a Curriculum Guide for Social Change that could serve as a tool for reviewing current course offerings and developing new courses to reflect its mission of “creating positive social change.” Those involved in piloting the Guide report on the process in this article. The general consensus is that it was time-consuming and frequently subjective; but the Guide gave substance to the institution’s mission, opening the way for its fuller implementation.  相似文献   

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