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Initiation, response and follow-up (IRF) exchanges produced by a student and his tutor in an internet-based tutorial interaction have been analysed in terms of the multifunctional characteristics of each utterance. Different functions, related to different purposes, were observed in the IRF moves performed by the student. The control over the interaction was shared by both student and tutor. The simultaneous and interwoven occurrence of different chains of IRF exchanges is suggested as a typical structural feature of tutoring via the internet which helps us to account for the distinctive nature of teaching and learning dialogues using e-mail. 相似文献
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Paulo Blikstein Marcelo Worsley Chris Piech Mehran Sahami Steven Cooper Daphne Koller 《学习科学杂志》2013,22(4):561-599
New high-frequency, automated data collection and analysis algorithms could offer new insights into complex learning processes, especially for tasks in which students have opportunities to generate unique open-ended artifacts such as computer programs. These approaches should be particularly useful because the need for scalable project-based and student-centered learning is growing considerably. In this article, we present studies focused on how students learn computer programming, based on data drawn from 154,000 code snapshots of computer programs under development by approximately 370 students enrolled in an introductory undergraduate programming course. We use methods from machine learning to discover patterns in the data and try to predict final exam grades. We begin with a set of exploratory experiments that use fully automated techniques to investigate how much students change their programming behavior throughout all assignments in the course. The results show that students’ change in programming patterns is only weakly predictive of course performance. We subsequently hone in on 1 single assignment, trying to map students’ learning process and trajectories and automatically identify productive and unproductive (sink) states within these trajectories. Results show that our process-based metric has better predictive power for final exams than the midterm grades. We conclude with recommendations about the use of such methods for assessment, real-time feedback, and course improvement. 相似文献
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Marcelo Fernandes 《Educational Media International》2013,50(4):230-236
Abstract Recent advances in computer‐based interactive digital technologies have presented a broad range of possibilities to create powerful presentations and instructional messages. However, incorporating these new technologies effectively is not a simple task because the design of effective computer‐based instructional material is a complex process. Successful design involves interactions between individual learner characteristics, instructional delivery media, the type of specific knowledge and skills being taught, and the strategies and methods used to teach the material. This paper discusses:
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— The need for an Automated Instructional Design
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— The integration of learning theory, instructional design and technology
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— Some approaches for automating instructional design
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— An exploration of ID Expert, ? an intelligent computer‐based multimedia instructional development system (beta version 1.0).
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This study investigated relations between preschoolers’ pretend play, examiner-rated adjustment, and teachers’ reports of educational and social adjustment in a large and racially diverse sample. Preschoolers (N = 171; Mage = 49.25 months, SD = 2.76; 89.5% non-White; 50.9% female) completed a standardized assessment of pretend play during a laboratory visit and teachers rated their academic and relational adjustment 3 months later. Interactive effects by child race were evaluated in light of prior suggestions that relations between children's creative expression and teacher-rated adjustment may vary by child race. There were no significant race differences in observers’ ratings of preschoolers’ pretend play, examiners’ ratings of child adjustment, or teachers’ ratings of child adjustment. Imaginative and expressive play features were positively related to examiners’ ratings of child ego-resilience for all children in the laboratory setting. However, child race moderated relations between these same play features and teachers’ ratings of preschooler adjustment in the classroom, even after child age, child IQ, family socioeconomic status, teacher–child racial congruence, teacher familiarity with the child, and child gender were held constant. Among Black preschoolers, imaginative and expressive pretend play features were associated with teachers’ ratings of less school preparedness, less peer acceptance, and more teacher–child conflict, whereas comparable levels of imagination and affect in pretend play were related to positive ratings on these same measures for non-Black children. These results suggest that teachers may ascribe differential meaning to child behaviors as a function of child race. Implications for child development, teacher training, and early education are discussed. 相似文献
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In multiple fixed interval (FI) schedules, rats are trained to discriminate different FIs that are signaled by different stimuli. After extensive training, the different stimuli often acquire control over performance, observed by an earlier increase in responding for stimuli that signal shorter FIs, as compared with stimuli that signal longer FIs. The order in which the different FIs are trained, either intermixed across cycles or in blocks of several cycles, may seem irrelevant given that average performance at asymptote may be similar. In this study, rats were trained in two procedures with multiple FIs presented intermixed within sessions or in blocks of one interval per session. Similar performance was observed at asymptote, but an inspection of early cycles in each session revealed that different stimuli acquired control over performance only when trained intermixed within each session. Although the stimuli reliably signaled the upcoming FI, when trained in successive blocks of 60 cycles, rats rapidly adjusted performance early in the sessions on the basis of the temporal aspects of the task, and not on the basis of the stimulus presented in the current cycle. These results are discussed in terms of overshadowing of the stimuli by temporal cues and in terms of conditions under which a stimulus acquires control over performance. 相似文献
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Xavier Rambla Yuri Kazepov Judith Jacovkis Lukas Alexander Marcelo Parreira Do Amaral 《International Journal of Lifelong Education》2020,39(1):48-60
ABSTRACT This article explores the interface between lifelong learning policies and the definition of social vulnerability of young adults in two regions located within the European Union. Girona comprises a constellation of small towns with important industry, service and hospitality sectors. Vienna is a global city where many key international operators are based and employ a large number of highly qualified professionals. The article explores to what extent the meta-governance and the ‘causal narratives’ of lifelong learning policies contribute towards shaping the prevailing images of youth vulnerability in these regions. In Girona, bureaucratic governance patterns lifelong learning policies, which strongly rely on the potential of career guidance to encourage the youth to undertake further education. Correspondingly, policy designs and professional discourses emphasise that the beneficiaries previously failed at school. In Vienna, authorities govern lifelong learning by means of both bureaucracy and complex networks of employers and non-profit organisations. The ‘causal narrative’ of the policies straightforwardly claims that all youth must have an experience with employment, whether in apprenticeships or in transitional workshops that emulate real jobs. There, policies portray beneficiaries according to their capacity to undertake and finish apprenticeships. 相似文献