Herzberg : une simulation multimédia à interactivité variable
Herzberg est un environnement de simulation multimédia permettant de visualiser et d’explorer la vibration et la rotation des molécules. Il permet de créer des documents formés d’un ensemble de pages affichant une ou deux molécules dans des configurations prédéfinies; un texte et une voix d’explication peuvent être associés à chaque page. Il est possible de fixer pour chaque document le niveau d’interactivité. On peut également, sans effectuer de programmation, ajouter de nouvell
Credibility of a simulation-based virtual laboratory: An exploratory study of learner judgments of v
Several studies have examined realism and instructional effectiveness of physical simulations. However, very few have touched on the question of their credibility or verisimilitude, from the userÂ’s point of view. This article presents an empirical exploratory study which investigated the perceptions of potential users of a simulation-based virtual physics laboratory (the VPLab). In the VPLab, students conduct virtual physics experiments designed to promote both acquisition of general experiment
Inside Theory-Aware and Standards-Compliant Authoring System
In their paper [14], Bourdeau and Mizoguchi foresaw a framework for ontology-based intelligent systems. Although it took longer years than their expectation, the ontology they have been developing is now released for evaluation with the help of the second author. Ontology building is a labor-intensive process and it is rarely perfect. Our enterprise is not an exception. The current ontology is still very preliminary because it has been completely reconstructed from the existing one with a few ne
Analyse des changements induits par la technologie dans des travaux pratiques de sciences expérimen
Un laboratoire distant est présenté : Educ@ffix.net, dans lequel les apprenants doivent construire un protocole
d’expérience grâce à un environnement informatique dédié, puis réaliser cette expérience par l’intermédiaire d’un
robot distant. Le protocole doit d’abord être validé par un tuteur artificiel, puis la manipulation est exécutée par
le robot et visualisée grâce à une caméra via le web.
Dans ces conditions, l’expérience de chimie est modifiée par rapport à une si
Natural Editing of Algebraic Expressions
We call “natural editing of algebraic expressions” the editing of algebraic expressions in
their natural representation, the one that is used on paper and blackboard. This is an issue
we have investigated in the Aplusix project, a project which develops a system aiming at
helping students to learn algebra. The paper summarises first this project. Second it
defines the notion of algebraic expression, and of representation of algebraic expression.
After an exploration of 20 software systems whic
Fostering collaborative knowledge construction with visualization tools
This study investigates to what extent collaborative knowledge construction can be fostered by providing students with visualization tools as structural support.
Thirty-two students of Educational Psychology took part in the study. The students were subdivided into dyads and asked to solve a case problem of their learning domain under one of two conditions: 1) with content-specific visualization 2) with content-unspecific visualization. Results show that by being provided with a content-specific
Knowledge Convergence in Computer-Supported
Collaborative Learning: The Role of External Representat
This study investigates how two types of graphical representation tools influence the way in which learners use knowledge resources in two different collaboration conditions. In
addition, the study explores the extent to which learners share knowledge with respect to
individual outcomes under these different conditions. The study also analyzes the relationship between the use of knowledge resources and different types of knowledge.
The type of external representation (content-specific vs. conten
Epistemic and Social Scripts in Computer-Supported Collaborative Learning
Collaborative learning in computer-supported learning environments typically means that learners work on tasks together, discussing their individual perspectives via text-based media or videoconferencing, and consequently acquire knowledge. Collaborative learning, however, is often sub-optimal with respect to how learners work on the concepts that are supposed to be learned and how learners interact with each other. One possibility to improve collaborative learning environments is to conceptuali
Internal and external collaboration scripts in web-based science learning at schools
Collaboration scripts can help learners to engage in argumentation and knowledge acquisition. However, they might have differential effects for learners holding differently structured knowledge (internal scripts) on argumentation. We investigated how external scripts interact with learnersÂ’ internal scripts concerning collaborative argumentation. 98 students from two secondary schools participated. Two versions of an external collaboration script (high vs. low structured) supporting argumentati
Introduction de nouvelles représentations dans le micromonde Aplusix
Représentations sous forme mi
Dans le cadre du projet Européen ReMath, nous avons entrepris d’introduire deux nouvelles représentations des expressions algébriques dans le micromonde Aplusix : une représentation mixte Naturelle & Arbre mêlant la représentation naturelle en deux dimensions des expressions algébriques avec une représentation en arbre, et une représentation graphique dans le plan des fonctions et sur la droite des ensembles de solutions des équations. Notre travail emprunte une démarche traditionnel
The Diver Project: Interactive Digital Video Repurposing
The digital interactive video exploration and reflection (Diver) system lets users create virtual pathways through existing video content using a virtual camera and an annotation window for commentary. Users can post their Dives to the WebDiver server system to generate active collaboration, further repurposing, and discussion. Although our current work focuses on video records in learning research and educational practices, Diver can aid collaborative analysis of a broad array of visual data re
CoVis: A National Science Education Collaboratory
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Hypermedia as a means for learning and for thinking about learning
This paper is about the design and realization of an experimentation with a hypermedial system, IPER-3, facing the three ‘classical’ problems in the history of mathematics (trisection of the angle, quadrature of the circle, duplication of the cube) and some issues which have developed around them. The aim of the work is to study the opportunities provided by hypermedial systems in dealing with topics of interest for the training of teachers and/or for class work, exploiting the possibility o
‘Hole-In-The-Wall’ Computer Kiosks Foster Mathematics Achievement - A comparative study
Earlier work at unsupervised playground computer kiosks in rural India, popularly called 'hole-in-the-wall', showed that children exposed to these kiosks learn to use computers on their own and that they are able to clear school examinations in computer science, without any classroom teaching for it. Extending this, our recent research work examines the possible impact on attainments in other curricular subjects, arising from self-directed use of these kiosks. This paper investigates the impact
A Discussion of Judah Schwartz's Chapter
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Experiences with Writing Grid Clients for Mobile devices
This paper describes our attempts to write GRID clients for Mobile Devices, such as a PDA, which have restrictive computational and storage facilities. Our experiences are based on an implementation of a mobile GRID client for Finesse, an existing web-based e-learning system.
At this stage of our work we are not looking to novel applications of mobile learning, but rather are exploring the feasibility of mobile devices as GRID platforms, with novel learning applications as our future aim. We ex
Children's mental models of recursive logo programs
Children who had a year of Logo programming experience were asked to think-aloud about what brief Logo recursive programs will do, and then to predict with a hand-simulation of the programs what the Logo graphics turtle will draw when the program is executed. If discrepancies arose in this last phase, children were asked to explain them. A prevaient but misguided "looping" interpretation of Logo recursion was identified, and this robust mental model persisted even in the face of contradiction be
Beyond Amplification: Using the Computer to Reorganize Mental Functioning
Computers are classically viewed as amplifiers of cognition. An alternative conceptualization is offered of computer as reorganizer of mental functioning. Software analyses illuminate the advantages of the latter approach for new visions of the potential cognitive benefits of computers. A new result emerges: Because the cognitive technologies we invent serve as instruments of cultural redefinition (shaping who we are by changing, not just amplifying, what we do), defining educational values beco
