Using visualizations to teach problem-solving skills in mathematics: Which kind of visualization wor
In the experiment described in this paper we investigated the effects of different kinds of computer-based visualizations on the acquisition of problem-solving skills in the domain of probability theory. Learners received either purely text-based worked examples, text plus an instruction to mentally imagine the examples contents, or they could retrieve either static pictures or concrete animations that depicted the problem statement and the problem states achieved by applying a specific solut
The impact of example comparisons on schema acquisition: Do learners really need multiple examples?
Comparing multiple examples within problem categories is usually considered a necessary prerequisite for schema acquisition. However, there is an evident lack of conclusive empirical evidence supporting this claim. Moreover, there are findings indicating that carefully designed one-example conditions may allow for profitable processes of example comparison as well. In line with this reasoning, we present an experiment - that builds up on a series of studies conducted by Quilici and Mayer (1996)
Cognitive tools for discovery learning
Cognitive tools, defined here as instruments that support or perform cognitive processes for learners in order to support learning, can bridge the difference between open learning environments, like discovery learning environments and traditional supportive instructional environments. This article discusses a definition of the concept of cognitive tool and its use in learning. Two examples of cognitive tools for discovery environments are presented, and it is made clear how these tools can serve
Understanding weblog communities through digital traces: a framework, a tool and an example
Often research on online communities could be compared to archaeology : researchers look at patterns in digital traces that members leave to characterise the community they belong to. Relatively easy access to these traces and a growing number of methods and tools to collect and analyse them make such analysis increasingly attractive. However, a researcher is faced with the difficult task of choosing which digital artefacts and which relations between them should be taken into account, and h
Collaborative distributed environments for learning design tasks by means of modelling and simulatio
The Simulation discipline has to face new challenges such as the incorporation of Collaborative Technologies for professional use as well as for teaching purposes. This integration permits the creation of new kinds of support for collaborative learning processes. In this paper, we explore the potential of this synergy with DomoSim-TPC, a synchronous distributed collaborative environment for the teaching and learning of Domotics. The system supports an active, simulation-based and problem-based a
Towards a Generic Platform for Developing CSCL Applications Using Grid Infrastructure
The goal of this paper is to explore the possibility of using CSCL component-based software under a Grid infrastructure. The merge of these technologies represents an attractive, but probably quite laborious enterprise if we consider not only the benefits but also the barriers that we have to overcome. This work presents an attempt toward this direction by developing a generic platform of CSCL components and discussing the advantages that we could obtain if we adapted it to the Grid. We then pro
A Parallel Grid-based Implementation for Real Time Processing of Event Log Data in Collaborative App
Collaborative applications usually register user interaction in the form of semi-structured plain text event log data. Extracting and structuring this data is a prerequisite for later key processes such as the analysis of interactions, assessment of group activity, or the provision of awareness and feedback. Yet, in real situations of online collaborative activity the processing of log data is usually done offline since structuring event log data is, in general, a computationally costly process
A Model for the Efficient Representation and Management of Online Collaborative Learning Interaction
This study aims to explore the importance of the efficient representation and management of the event information generated from group activity in online collaborative learning practices so that we can use it to provide awareness about individual and group behaviour. The achievement of this goal first involves the design of a conceptual model of collaborative learning interaction that structures and classifies the information generated in an online collaborative learning situation at several lev
An Approach to Analyzing the Role and Structure of Reflective Dialogue
Several intelligent tutoring systems contain modules that support reflection after practice exercises. However, there is very little research on reflective dialogue and its relation to dialogue during problem solving that can guide this effort. The approach to analyzing educational dialogue described in this paper was developed to address this problem. Using statistical and machine learning methods, we compared the frequency and structure of speech acts by avionics students and experts during pr
The Blakkat Software for Tagging Online Language Learner Corpora: Issues in SLA Assessment and R
This paper aims at showing, through a case study, one possible application of Computer Learner Corpus (CLC) to Network Based Language Teaching (NBLT). Research has shown how CLC can be used both for Second Language Acquisiton (SLA) research and Foreign Language Teaching (FLT), especially if they are tagged, that is, if interpretative annotations are added to the corpus (e.g. error annotations). Online learning generally takes place inside virtual environments where learners exchange mainly writt
Learning a New Game: Usability, Gender and Education
This research study aims to investigate the usability issues of a computer game; regarding how people learn a new game. Because the user characteristic and the strategies they use while learning a new tool are important factors for usability, they were also taken into account in the study. Both qualitative and quantitative methods were used in the study. 16 participants played the computer game. They were also observed and their eye-movements were recorded by an eye tracking device. Results show
Internet Scout Project
"...bioterrorism thrives on public fear." Dr. Ralph R. Frerichs of the UCLA School of Public Health maintains this Web site to educate students, the public, and health professionals about the public health impact of bioterrorism. The site offers links to recent articles about the public health threat of biological weapons and information about various diseases associated with possible biological weapons, including anthrax, smallpox, botulism and others. Unless you are a UCLA student, most viewer
Effects of pictures, age and experience on learning to use a computer program
This study examines the effects of pictures of screen captures and input devices on documentation for older novices. There was no main effect of pictures, but there were statistically significant interactions between the type of picture and the factors of age and computer experience. As predicted, the most optimized designsthe ones presenting screen capturesmoderated the negative effects of age. We argue that screen captures help reduce two problems in the cognitive area that are especially
Accent Classification using Neural Networks
Creating an algorithm for detecting and classifying accents using formant analysis and neural networks.
Risk Characterization -- Putting it All Together Fall 2007
Nuclear Engineering 175: Methods of Risk Analysis - Fall 07. Methodological approaches for the quantification of technological risk and risk based decision making. Probabilistic safety assessment, human health risks, environmental and ecological risk analysis.
Real Estate Finance and Investment, Fall 2002
Concepts and techniques for analyzing financial decisions in property development and investment. Topics: leasing and property income streams, pro forma analysis, equity valuation, tax analysis, options, risk, and the financial structuring of real property ownership. This course is an introduction to the most fundamental concepts, principles, analytical methods and tools useful for making investment and finance decisions regarding commercial real estate assets. As the first of a two-course seque
Chrom. and Electrophoresis experiments with PDFs
A site with PDF links to several slab gel electrophoresis, HPLC, and GC experiments intended for high school or college audiences. This site may provide a useful starting point for faculty seeking to implement new laboratory experiments based on these techniques. A login (email address) is required, but once logged in, follow the "Free Resources" link to see many instrumental and analytical experiments that have been submitted to the site.
Knowledge Acquisition 2
Knowledge Acquisition 2 covers protocol analysis and advantages and disadvantages of knowledge acquisition
The Probability Pipe Organ
This site provides a Java-based simulation that uses a random number generator to demonstrate the principles of probability.
Web Analysis and Design - Build
This reading material forms part of the "Build" topic in the Web Analysis and Design module.