Contrary to classical problem-based learning, in guided problem-based learning, the learning goals are predetermined by the instructor—on the basis of a detailed decomposition of the subject matter to be studied—to activate prior knowledge and to structure self-study and subsequent group discussion. This study investigated the effects of classical problem-based learning and guided problem-based learning, for different prior knowledge levels, on perceived value and usefulness of the learning activity and on conceptual understanding of statistics. Participants randomly assigned 110 students to 10 problem-based learning groups, and subsequently, the 10 groups were allocated randomly to classical problem-based learning or guided problem-based learning. The results indicate that guided problem-based learning tends to enhance conceptual understanding of statistics more thanbreak; classical problem-based learning once students have some prior knowledge of the subject. Furthermore, guided problem-based learning tends to increase students’ awareness of the value and usefulness of the learning activity. 相似文献
This study investigated the effects of different teaching and learning methods for statistics for 2 levels of prior knowledge on cognitive load, propositional knowledge, and conceptual understanding. Teaching methods were whether or not to provide students with propositional information, and learning strategies were self-explaining the learning material and explaining in pairs. The results indicate that prior knowledge facilitates propositional knowledge development and leads to differential effects of teaching and learning methods on conceptual understanding: Only low prior knowledge students profit from additional information in the learning task and/or explaining in pairs. An implication of these findings is that low prior knowledge students should be guided into the subject matter by means of working in pairs on learning tasks that comprise additional information. Once students have developed more knowledge of the subject matter, they should be stimulated to work individually on learning tasks that do not comprise additional information. 相似文献
The SNIP (source normalized impact per paper) indicator is an indicator of the citation impact of scientific journals. The indicator, introduced by Henk Moed in 2010, is included in Elsevier's Scopus database. The SNIP indicator uses a source normalized approach to correct for differences in citation practices between scientific fields. The strength of this approach is that it does not require a field classification system in which the boundaries of fields are explicitly defined.In this paper, a number of modifications that were recently made to the SNIP indicator are explained, and the advantages of the resulting revised SNIP indicator are pointed out. It is argued that the original SNIP indicator has some counterintuitive properties, and it is shown mathematically that the revised SNIP indicator does not have these properties. Empirically, the differences between the original SNIP indicator and the revised one turn out to be relatively small, although some systematic differences can be observed. Relations with other source normalized indicators proposed in the literature are discussed as well. 相似文献
Information technology is widely used to fulfill societal goals such as safety and security. These application areas put ever changing demands on the functionality of the technology. Designing technological appliances to be reconfigurable, thereby keeping them open to functionalities yet to be determined, will possibly allow the technology to fulfill these changing demands in an efficient way. In this paper we present a first exploration of potential societal and moral issues of reconfigurable sensors developed for application in the safety and security domain, in the context of a large scale R&D-project in the Netherlands. We discuss the subtle distinction between the relevant notions of reconfigurability, function creep, and unrestricted or unforeseen technological affordances. We argue that the feature of reconfigurability makes context of use the central issue in the assessment of the societal and moral impact of the technology. It follows that the design of good policies for new application contexts has to be central in a value sensitive design approach to reconfigurable technology. 相似文献
In this study the effect of the reduced distribution of study activities on students’ conceptual understanding of statistics
is investigated in a quasi-experiment. Conceptual understanding depends on coherent and error free knowledge structures. Students
need time to construct such knowledge structures. A curriculum reform at our university resulted in statistics courses which
were considerably shortened in time, thereby limiting students’ possibility to distribute study activities. Independent samples
of students from before and after the reform were compared. To gauge conceptual understanding of statistics, students answered
open ended questions in which they were asked to explain and relate important statistical concepts. It was shown that the
reduction of distributed practice had a negative effect on students’ understanding. The finding that condensed courses make
it more difficult for students to reach proper understanding of the subject matter is of interest for anyone who is engaged
in reforming curricula or designing courses. 相似文献
Over the last decade teacher educators have started to systematically study the processes involved in their efforts to improve their teacher education practices. This research by teacher educators (self‐study research) has made an enormous contribution to the professional development of the teacher educators involved. Many teacher educators, however, have neither the time nor the knowledge to systematically study their own practices. In the light of this situation, the authors of this article have tried to devise other research strategies to support the professional development of teacher educators. The three studies presented in this article can be described as research with teacher educators. In closing, and based on the reflection on the three studies, five characteristics of productive research with teacher educators are presented.
Au cours des dix dernières années, les formateurs d'enseignants ont commencé à étudier systématiquement les processus impliqués dans les efforts qu'ils déployaient pour perfectionner leurs pratiques de formation d'enseignants. Cette recherche (étude individuelle) effectuée par des formateurs d'enseignants montre qu'elle contribue énormément au perfectionnement professionnel des formateurs. Il convient de signaler toutefois que plusieurs formateurs ne disposent ni du temps ni des connaissances qui leur permettraient d'étudier leurs pratiques professionnelles de manière systématique. C'est dans le cadre de cette situation que les auteurs du présent article se sont efforcés de concevoir d'autres stratégies de recherche pour soutenir le perfectionnement professionnel des formateurs d'enseignants. Les trois études présentées dans l'article peuvent être décrites comme étant des recherches entreprises avec des formateurs d'enseignants. Pour conclure, cinq caractéristiques de recherche productive avec des formateurs sont développées à partir de la réflexion des trois études.
En la última década, los formadores de docentes han empezado a estudiar sistemáticamente los procesos implicados en sus esfuerzos por mejorar las prácticas de formación de docentes. Esta investigación realizada por los propios formadores de docentes (investigación de autoestudio) ha demostrado contribuir enormemente a su desarrollo profesional. Sin embargo, muchos formadores de docentes no disponen de tiempo ni de conocimientos para estudiar sus propias prácticas de forma sistemática. En vista de esta situación, los autores del presente artículo han intentado diseñar otras estrategias de investigación para apoyar el desarrollo profesional de los formadores de docentes. Los tres estudios presentados en este artículo pueden describirse como una investigación con formadores de docentes. Para finalizar, y partiendo de la reflexión sobre estos tres estudios, se presentan cinco características de la investigación productiva con formadores de docentes.
In der letzten Dekade haben die Lehrerausbilder begonnen, systematisch die Prozesse zu erforschen, die zur Verbesserung ihrer Handlungsweise im Lehrerausbildungsbereich erforderlich sind. Diese von Lehrerausbildern durchgeführte Forschung (Selbststudienforschung) leistet einen bedeutenden Beitrag zur beruflichen Entwicklung der betroffenen Lehrerausbilder. Viele Lehrerausbilder haben jedoch weder die Zeit noch die Kenntnisse, ihre eigene Handlungsweise systematisch zu erforschen. In diesem Licht betrachtet haben die Autoren dieses Artikels versucht, andere Forschungsstrategien zu erarbeiten, um die berufliche Entwicklung von Lehrerausbildern zu unterstützen. Die drei in diesem Artikel vorgelegten Studien können als Forschung mit Lehrerausbildern bezeichnet werden. Abschließend und basierend auf der Reflexion über die drei Studien werden fünf charakteristische Merkmale produktiver Forschung mit Lehrerausbildern vorgelegt. 相似文献
In this study directive tutor guidance in problem-based learning (PBL) of statistics is investigated. In a quasi experiment
in an educational setting, directive guiding tutors were compared with tutors in a more traditional role. Results showed that
the subjective perceptions of the students with regard to the course, the tutor, and the discussions in the tutorial meetings
were more positive in the guided condition. The quality of the problems used in the meetings and general tutor functioning
were evaluated as equal in both conditions. Achievement was marginally higher in the guided condition. It can be concluded
that directive tutor guidance is an effective addition to PBL of statistics. 相似文献
Educational Psychology Review - The question of how learners’ motivation influences their academic achievement and vice versa has been the subject of intensive research due to its theoretical... 相似文献
This paper presents the technological relevance of a concurrent algorithm-based discrete element modelling (DEM) system, HADES.
This new system is the successor of SPACE that is limited to spherical grains only. It can realistically simulate the packing
of arbitrary-shaped particles up to the fully compacted state. Generation of families of such particles, i.e., generally representing
aggregate of fluvial origin and crushed rock, respectively, and the forming way of particulate structure are described. Similarly
shaped particles are proposed for simulation of cement paste because of conformity with experimental results obtained by the
X-ray tomography method. Technologically relevant territories inside and outside concrete technology are presently explored
in this efficient, reliable, and economic way. Some results obtained by this DEM approach are presented. 相似文献
The current experiment examined the potential effects of the method of propositional manipulation (MPM) as a lecturing method on motivation to learn and conceptual understanding of statistics. MPM aims to help students develop conceptual understanding by guiding them into self-explanation at two different stages: First, at the stage of propositions (statements referring to single statistical concepts and ideas), and subsequently, at the stage of more complex problems that comprise a set of relevant propositions. A total of 71 bachelor students in psychology who were preparing for the re-sit of their inferential statistics exam participated in one of two possible lectures. Topic, content, lecturer, and duration of both lectures were the same, and in both lectures five true/false hypotheses were presented. Students in the first lecture (control group) discussed interactively the truth or falsity of each hypothesis. In the second lecture (MPM group), this interactive discussion was structured by presenting a number of short open-ended questions along with each hypothesis. Conceptual understanding was measured by means of a twelve items multiple choice test. Further, the intrinsic motivation inventory was administered to examine motivation to learn. The results indicate that MPM does not lead to enhanced motivation to learn but can facilitate conceptual understanding development among students. 相似文献
