This study reports the effects of using word clouds to support students' knowledge integration from online inquiry as demonstrated by blog posts, tags and concept maps. Fifty-four undergraduate students from a medium-sized university in the northwestern United States were randomly assigned into two groups and blogged for five weeks. To support…

A new approach to information science, activity theory emphasizes the centrality of practice as doing and activity and foregrounds setting and context as essential orienting concepts. It can provide information science with a rich, unifying, and heuristically valuable vocabulary and conceptual framework that will facilitate the continual…

Despite a growing development of virtual laboratories which use the advantages of multimedia and Internet for distance education, learning by means of such tutorial tools would be more effective if they were specifically tailored to each student needs. The virtual teaching process would be well adapted if an artificial tutor can identify the…

Genetic algorithms (GAs) are a problem solving strategy that uses stochastic search. Since their introduction (Holland, 1975), GAs have proven to be particularly useful for solving problems that are "intractable" using classical methods. The language of genetic algorithms (GAs) is heavily laced with biological metaphors from evolutionary…

Discusses the need for a common discourse about interdisciplinary needs in order to meet library users' needs. Considers why and how interdisciplinary activities emerge, what form they take, and where they are located in institutions. Also discusses knowledge representation. (Contains 78 references.) (Author/LRW)

Argues for an approach to conceptual-change instruction that places students' science conceptions and their ability to reflect on those conceptions at the center of science instruction. Focuses on the effect of using status concepts. Contains 24 references. (DDR)

Coded experience and effective semiotic systems, organizations of patterns of signs that comprise a system of meaning, have proved essential for the propagation of knowledge. In education, communication via semiotic systems forms an important role in guiding children toward the effective use of information and techniques, and it is important that…

Transfer of training in the construction and use of knowledge maps to text comprehension was investigated. Knowledge maps (k-maps) are spatial/verbal arrays that represent information in the form of node-link diagrams. K-maps make the macrostructure of a body of information more easily available to the learner. Because k-maps emphasize…

This paper reports an empirical study comparing the role of discourse and knowledge representations (graphical evidence mapping) in face-to-face versus synchronous online collaborative learning. Prior work in face-to-face collaborative learning situations has shown that the features of representational notations can influence the focus of…

Computer-based learning environments are proliferating in an effort to make more resources available to more students in more timely and individualized ways without overtaxing diminishing budgets. Many computer-based learning environments are designed to facilitate meaningful interaction, however, interactivity is only one of the factors that…

Discusses dictionaries in digital form and describes a new type of structured, interactive hyper-dictionary that connects user learning activities with corresponding queries that express information wishes. Topics include dictionaries as knowledge acquisition support tools; searching; browsing; self-assessment though knowledge representation; and…

The importance of the Extensible Markup Language (XML) technology family in the field of Computer Assisted Learning (CAL) can not be denied. The Instructional Management Systems Project (IMS), for example, provides a learning resource XML binding specification. Considering this specification and other implementations using XML to represent…

Proposes activities that promote students' awareness of the structure of the information involved in their everyday activities, and builds the concept of function from students' mental representations of phenomena. Recommends the use of spreadsheets to provide external representations of these functions. (DDR)

Describes a game used in precalculus that builds interest and confidence in the uses of inverse functions. The game is preceded by a worksheet that enables students to discover that f(x) and f-1(x) are mirror images of the line y=x. (DDR)

Describes how Mexican-American language-minority students construct biology concept meanings based on extant linguistic skills. Provides an instructional activity that engages students in constructing meanings through mediational means. Contains 35 references. (DDR)