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The identification implementation 普通类
Critical user interface design features of computer-assisted instruction programs in mathematics for students with learning disabilities and corresponding implementation guidelines were identified in this study. Based on the identified features and guidelines, a multimedia computer-assisted instruction program, ‘Math Explorer’, which delivers addition and subtraction word problem-solving instruction for students with learning disabilities at the early elementary level, was designed and developed. Lastly, usability testing was conducted to assess whether Math Explorer was well-designed in terms of the interface for students with learning disabilities. Given the results of the usability testing, this study corroborated the fact that the critical user interface design features and guidelines in mathematics computer-assisted instruction programs would be essential for facilitating the mathematical learning of students with learning disabilities. Implications for practice and future research were discussed.
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In the mind and in the technology 普通类
The focus of research into the use of the interactive whiteboard (IWB) in the classroom has been largely in relation to teacher–pupil interaction, with very little consideration of its possible use as a tool for pupils’ collaborative endeavour. This paper is based upon an ESRC-funded project,1 which considers how pupils use the interactive whiteboard when working together on science-related activities. It provides an analysis of video and other data from science lessons in UK Years 4 and 5 primary classrooms (pupils aged 8–10 years). Concentrating on a series of lessons constructed by three (out of 12) of the project teachers, together with their written and spoken commentaries, it takes each set of lessons as a case for study and comparison. This paper focuses in particular on the nature of the ‘vicarious presence’ of the teacher evident in the group interactions at the board. We address the following questions: How is the teacher’s vicarious presence evident in the work of pupils at the interactive whiteboard? How does this presence influence the behaviour of pupils engaged in science activities? In this account, we suggest that the teacher remotely mediates the activity of the pupils at the board in two specific and interlinked ways. Firstly, the vicarious presence of the teacher seems to be in the minds of pupils, enabling them to appropriate and use introduced rules and procedures, in this case in relation to group talk. Secondly, it is in the ways in which the constructed task environment on the IWB guides and mediates the pupils’ actions, enabling them to connect with, interpret and act upon the teacher intentions for the task. Here, the teacher’s vicarious presence is in the technology. We conclude that the IWB can provide both a tool and an environment that can encourage the creation of a shared dialogic space within which co-constructed knowledge building can take place. However, this only occurs where there is active support from the teacher for collaborative, dialogic activity in the classroom and where the teacher is able to devise tasks that use board affordances to promote active learning and pupil agency.
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A Communal Constructivism case study 普通类
As increasing numbers of educators explore the use of virtual worlds for education, there is a need to consider which pedagogical approaches can provide an opportunity to do more than recreate the traditional classroom by leveraging the unique characteristics and potential that the technology can offer. This study identifies Communal Constructivism as a potentially appropriate pedagogy for use in the virtual world Second Life. Five groups of learners took part in a learning experience specifically designed to provide opportunity for the features of Communal Constructivism to emerge through the affordances of the technology. The chat logs, learning artefacts, post-activity semi-structured interviews and researcher’s observations from each of the five groups were analysed to explore participants’ experiences and both the operation and outcome of the pedagogy in action. Findings from the qualitative analysis of the data sets indicate that learners collaboratively constructed knowledge for themselves as a group and for others, as the features of the pedagogy emerged.
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In-service and pre-service early childhood 普通类
This paper regards a comparative study which investigates in-service and pre-service Greek early childhood teachers’ views and intentions about integrating and using computers in early childhood settings. Views and intentions were investigated via a questionnaire administered to 240 in-service and 428 pre-service early childhood teachers. Confirmatory Factor Analysis showed that the one-factor structure of the questionnaire holds in both populations. Measurement partial invariance between the two populations was confirmed. Comparing the two populations with regard to the degree of adopting positive views–intentions and the level of computer self-efficacy, teachers expressed more positive views–intentions and students reported higher computer self-efficacy. Implications for teacher training are discussed.
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Using CAS to solve a mathematics task 普通类
I investigate how and whether a heterogeneous group of first-year university mathematics students in South Africa harness the potential power of a computer algebra system (CAS) when doing a specific mathematics task. In order to do this, I develop a framework for deconstructing a mathematics task requiring the use of CAS, into its primary components. This framework is based on the semiotic notion of diagrammatic reasoning whereby reasoning consists of construction of signs, transformation of signs, and observation and interpretation of signs. I use the framework to distinguish between the activities of students who were computer literate on entry to university and those who were not computer literate. The analysis suggests that formerly non-computer literate students are no worse than computer literate students in using CAS to construct various representations of signs, but that they are less able to interpret these signs. I propose that, in the South African context, this is largely due to inequities in prior mathematical education, rather than a lack of computer literacy per se. Article Outline
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Online lecture accessibility 普通类
At the University of Toronto at Scarborough, we provide enhanced flexibility to our students using a blended-learning approach (i.e., the webOption) whereby students can attend lectures live, watch them online at their convenience, or both. The current research examines the use of pause and seeks features afforded by the webOption interface and how these features are related to students’ learning approaches and their performance in calculus courses. These courses emphasize the teaching of mathematical proofs; cognitive skills that are enhanced with practice (Schneider & Shiffrin, 1977). Access to online lectures allows students to re-experience the professor as they teach these skills. Given this, it was predicted that use of the webOption might be especially potent in these learning contexts. The results we report here do not confirm that prediction. Students do use and appreciate the features of the webOption, however, those students who augmented their class attendance with online viewing, and those who used the lecture-control features the most, were actually the students who performed most poorly. We interpreted the results to be due to different learning strategies and the manner in which these strategies interact with course content. Our results suggest that using the pause feature is related to a surface strategy of learning, which is in turn related to poorer performance in the course.
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Who exactly is the moderator 普通类
In the knowledge society, the appearance and development of new networked working and learning environments is increasingly common. In the Accelera project, which is the basis for this paper, we have developed an online community of practice which enables experiences and knowledge to be shared between various educational agents, and analysis of the processes generated, in order to produce and validate a model for the networked creation and management of knowledge. One of the key elements in the networked Knowledge Creation and Management model considered in this article is the moderator. We discuss their skills, the role they play in knowledge networks, the moderation and participation criteria they should follow, and their professional development and the training required to work well as a moderator. Findings indicate that a consideration of the moderator’s inherent objectives in online environments and the tasks derived from these objectives leads to the acquisition and development of administrative and technical (organisational) knowledge and competences as well as other more complex knowledge and competences related to pedagogical, intellectual and social factors, without ignoring the need for them to understand and be familiar with the workings of CSCL where they will intervene.
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Web-based integration and procedure prompts 普通类
This study examined how web-based integration and procedure question prompts differentially affected students’ knowledge acquisition and ill-structured problem solving skills, particularly in representing problem(s), developing solutions, and monitoring and evaluating a plan of action within the social science context. Eighty-four undergraduate pre-service teachers were recruited and randomly assigned to one of the four conditions: (1) an IP condition that required students to complete integration prompts, (2) a PP condition that required students to complete procedure prompts, (3) an IPP condition that required students to complete both integration and procedure prompts, or (4) a control condition that did not provide access to any prompts. The findings show that students who received integration prompts outperformed those who did not receive any in knowledge acquisition and problem representation for solving an ill-structured problem. Integration prompts also helped the development and integration of cognitive schema, whereas procedure prompts helped direct students’ attention to specific features of the problem in order to arrive at the solution(s). In fact, the presence of an integration prompt alone is not sufficient to support successful ill-structured problem solving unless a procedure prompt is provided. Based on these findings, this study offers implications for designing Web-based learning environments, engineered to promote integrative knowledge and ill-structured problem solving skills.
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Computer-enriched instruction 普通类
This study examines the timing using computer-enriched instruction (CEI), before or after a traditional lecture to determine cross-over effect, period effect, and learning effect arising from sequencing of instruction. A 2 × 2 cross-over design was used with CEI to teach central limit theorem (CLT). Two sequences of graduate students in nursing participated in this study. Sequence A was given the CEI and handout first, followed by a traditional lecture and handout. Sequence B was given a lecture and handout first, followed by the CEI and handout. A pre-test and posttests (posttest1 after the first presentation and posttest2 after the second presentation) were given to measure instructional outcomes. All tests were 10 multiple choice questions with four options and only one option was the correct answer. No significant difference in scores was seen in posttest1 between students in sequence A (6.1 ± 2.5) and B (6.5 ± 2.1) (p = 0.52 by unpaired t-test; p = 0.80 after adjusted for pre-test score by ANCOVA). No significant carryover effect was seen (p = 0.66). A significant period effect was observed, in which 7.7 for period 2 was greater than 6.3 for period 1, the difference of 1.4 with 95% CI between 0.8 and 2.0, p < 0.0001. When the course material was taught twice, traditional lecture had a higher average score (7.3) than CEI (6.6) and the difference between two teaching methods was 0.7 with 95% CI between 0.1 and 1.3, p = 0.02). Sequence A’s increase (2.1) represented a preview effect of CEI and sequence B’s increase (0.8) represented a review effect of CEI. The study time needed for the first presentation was the same for the two teaching methods (55 min); the study time needed for the first presentation was always longer than that of the second presentation, regardless of which teaching method was being used. When comparing the subjective rating on two teaching methods between two sequences, sequence A students rated traditional lecture significantly better than sequence B students did in regards to satisfaction (p = 0.0003), clarity (p = 0.002), understanding (p = 0.02). About two-thirds of sequence A students preferred CEI followed by the lecture, and 43.8% of the sequence B students preferred the lecture followed by CEI. In conclusion, when CLT was taught once, CEI and traditional lecture were equivalent in terms of the test score (posttest1) and teaching time. When CLT was taught twice, traditional lecture had a higher average test score than CEI. Preview effect of CEI in CLT was suggested because of higher difference in test score in sequence A than sequence B, and better subjective rating of traditional lecture in sequence A than in sequence B.
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Computer-related posture and discomfort 普通类
This study investigated the effect of a school-based ergonomic intervention on childrens’ posture and discomfort while using computers using a pre/post test study design. The sample comprised 23 children age 9 and 10 years. Posture was assessed with Rapid Upper Limb Assessment (RULA) and a workstation assessment was completed using a Visual Display Unit (VDU) checklist. Self reported discomfort was also recorded at the beginning and end of the computer class. Following an ergonomic intervention that included education of the children and workstation changes, the outcome measures were repeated. There was a positive response to the intervention with significant changes between the pre-intervention and post-intervention scores for posture (p = 0.00) and workstation (p = 0.00). The change in discomfort scores from beginning to end of the computer class between the pre-intervention class and the post-intervention class was also significant (p = 0.00). The study highlights the need for continuing concern about the physical effects of children’s computer use and the implications of school-based interventions.