Energy Transfer in Musical Instruments
This lesson covers concepts of energy and energy transfer utilizing energy transfer in musical instruments as an example. More specifically, the lesson explains the two different ways in which energy can be transferred between a system and its environment. The law of conservation of energy will also be taught. Example systems will be presented to students (two cars on a track and a tennis ball falling to the ground) and students will be asked to make predictions and explain the energy transfer m
Cicero, Pro Caelio § 64 (Natural)
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Supporting information comparisons in example-based hypertext environments
Global comparisons of learning from hypertext and traditional text have yet failed to show major advantages concerning the effectiveness of hypertext learning. In the current paper it is proposed that an effective hypertext design needs to be based on thorough cognitive task analyses with regard to structures, processes, and resources that are required to benefit from a specific learning approach. This claim is illustrated by two experiments, in which we investigated two methods for supporting e
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Operating as the nonprofit research campus of the University and Community College System of Nevada, the Desert Research Institute (DRI) conducts more than $27 million in environmental research each year with the help of its approximately 400 research faculty and support staff. The informational research page of the main Web site offers descriptions; publications; links; and other relevant facts from the various arms of the institute, which include the Division of Atmospheric Sciences, Division
Redefining the Turn-Taking Notion in Mediated Communication of Virtual Learning Communities
In our research on social interactions taking place in forum-type tools that virtual learning communities use, we have found that the users have the following particular temporal behavior: they answer generally some messages situated in different threads in a very short time period, in a digest-like way. This paper shows this work pattern through a quantitative study and proposes an integration of this work pattern in a Forum-type tool developed for supporting the interactions of virtual learnin
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The Cyber Security Group at Pennsylvania State University is developing database software that can detect "attacks by malicious transactions" and repair the database with no interruption. This research paper proposes five different schemes for implementing such a system, with each one building on the previous. Some of the main goals for the schemes are automatic damage repair, attack isolation to prevent multiple attacks of the same type, and damage containment during the repair process. One of
Reflections on Success: A retrospective of the mLearn conference series 2002-2005
mLearn is now in its fifth year. Although mobile learning has a much longer history, the
inauguration of a conference for learning in the mobile age marked an important point in its
development. This paper takes a retrospective look at the mLearn conferences from 2002
through to 2005; reflecting on our progress in order to facilitate the transition of mobile learning from a novel research concept into a viable means of providing meaningful learning
opportunities “across generations and cultures
Student Modeling and Machine Learning
After identifying essential student modeling issues and machine learning approaches, this paper examines how machine learning techniques have been used to automate the construction of student models as well as the background knowledge necessary for student modeling. In the process, the paper sheds light on the difficulty, suitability and potential of using machine learning for student modeling processes, and, to a lesser extent, the potential of using student modeling techniques in machine learn
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This Topic in Depth explores the science behind predicting the weather. First, the United States Search and Rescue Task Force describe the basic tools and knowledge used to create weather forecasts (1). Students can find concise, clear explanations of weather, fronts and air masses, high and low pressure, precipitation, and water vapor and humidity as well. By performing the activities presented in the second website, fourth grade students can learn about weather instruments and data collection
Sequence effects in solving knowledge-rich problems: The ambiguous role of surface similarities
Sequence effects are said to occur whenever the problem solving performance varies as a function of the order in which problems are solved. We present a framework that explain sequence effects as a result of (a) learning during solving a problem and of (b) transferring the learned content on succeeding problems. In two experiments we studied the ambiguous influence of surface similarities among structurally dissimilar knowledge-rich problems on sequence effects. These experiments demonstrate tha
Intelligent support for discovery learning
Using opportunistic learner modeling and heuristics to support simulation based discovery learning.,Doctoral dissertation, University of Twente. Enschede, The Netherlands: Twente University Press.
Learning physics with a computer algebra system
To become proficient problem-solvers, physics students need to form a coherent and flexible understanding of problem situations with which they are confronted. Still, many students have only a limited representation of the problems on which they are working. Therefore, an instructional approach was devised to promote students' understanding of these problems and to support them in forming associations between problem features and solution methods. The approach was based on using the computer alg
Computer support for collaborative learning: foundations for a CSCL community
Proceedings of CSCL 2002 Boulder, Colorado, USA January 7-11, 2002
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This issue of Topic in Depth explores some of the resources available online regarding school finance. The first article from the RAND Review (1) discusses the challenges involved in meeting the ambitious goals established by the No Child Left Behind (NCLB) Act and the need to develop a school accountability system that can provide "the incentives and resources that the schools really need to help all students meet the state performance standards." In the second article (2), Linda Darling-Hammon
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Plagiarism.org is an "online resource for educators concerned with the growing problem of Internet plagiarism." The organization provides information on online plagiarism and explains how Turnitin.com can be used by educators "to fight plagiarism and help bring academic integrity back into our schools." The technologies behind Turnitin.com, facts about Internet plagiarism, and the growth of "cheatsites" online are also explained. Members of Turnitin.com pay for access to "a proprietary system th
A Neural Approach for Modeling the Inference of Awareness in Computer-Supported Collaboration
Individuals interacting in a computer supported collaborative learning (CSCL) environment produce a variety of information elements during their participation; these information elements usually have a complex structure and semantics, which make it rather difficult to find out the behavioral attitudes and profiles of the users involved. This work provides a model that can be used to discover awareness information lying underneath multi-user interaction. This information is initially captured in
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This outstanding website on Native Conifers of North America was created by Nearctica, an organization devoted to connecting the internet public to high quality natural sciences websites. The site offers The Complete Conifers of North America whereby site visitors can access Genera and Species from a checklist or by using a nicely organized key system based on various conifer characteristics. Species pages include beautiful illustrations, photos, and simple distribution maps as well as informati
Meanings for Fraction as Number - Measure by Exploring the Number Line
Construction of meanings for fraction as number-measure is studied during the implementation of exploratory tasks concerning comparison and ordering of fractions as well as operations with fractions. 12-year-old students were working collaboratively in groups of two with software that combines graphical and symbolic notation of fractions represented as points on the number line. Fractions as points and segments, ordering fractions as part of kinesthetic activities and abstracting the scaling of
Pour une meilleure intégration de l’utilisateur dans le processus de conception et d’évaluation
Le système TELOS intègre un ensemble dÂ’architectures, de méthodes et dÂ’outils appelés à transformer en profondeur le fonctionnement institutionnel et les pratiques professionnelles en matière de conception, de production et de diffusion de cours et dÂ’apprentissage en ligne. TELOS suppose non seulement lÂ’appropriation de nouveaux outils technologiques, mais aussi un nouveau modèle de travail qui prend appui sur une ingénierie pédagogique rigoureuse et sur lÂ’accès à des banques dÂ
Decentralized Service Deployment for Collaborative Environments
In this paper we present the design of a system which allows service deployment in a small-sized group of computers distributed through the Internet. These groups are formed by users who share a common interest, and voluntarily yield their own resources for the achievement of the collaborative activities of the group. Having enough resources contributed by the members of the group, our system guarantees service availability and the fact that the deployment and execution of the services is carrie
