Illustrates the construction of conceptual models on pressure and flotation using high school students' previous ideas on these concepts. Identifies three models and uses them to analyze students' ideas about physical phenomena and to recognize the inferential structure they use. Contains 28 references. (DDR)

Reports research based on the scientific issues of a claim of missing matter in the universe and a possible link between injections of vitamin K into newborn babies and the subsequent development of childhood cancer. Contains 64 references. (DDR)

Reports on a project in which children develop instructional technology skills while learning a great deal of science. Explains how children construct a multimedia presentation on the topic of invertebrates. (DDR)

Describes a study that examined changes in the structural complexity of knowledge held by two groups of introductory college-level biology students (N=68, N=93). The subjects constructed concept maps at four-week intervals throughout the instructional term. Contains 49 references. (DDR)

Considers the role of library and information science professionals as knowledge engineers. Highlights include knowledge acquisition, including personal experience, interviews, protocol analysis, observation, multidimensional sorting, printed sources, and machine learning; knowledge representation, including production rules and semantic nets;…

Reports on a research project designed to develop an intelligent computer-based learning environment of industrial applications. "Jonas," an expert system, is part of a modeling/simulation environment which enables shop-floor workers to test and put new philosophies of work into practice in the context of manufacture. The approach focuses on the…

Describes an innovation designed to capitalize on certain benefits of concept maps. Uses computer software with preservice teachers to enable them to construct concept maps that represent their own subject matter knowledge. Contains 21 references. (DDR)

Argues that new educational technologies change the meaning of words common to teacher vocabulary, especially words such as "classroom community,""knowing," and "coming to know." Points out that human senses used in learning are nullified if not assaulted by educational technologies. (DDR)

Focuses on natural language processing (NLP) in information retrieval. Defines the seven levels at which people extract meaning from text/spoken language. Discusses the stages of information processing; how an information retrieval system works; advantages to adding full NLP to information retrieval systems; and common problems with information…

Presents stories that illustrate how children learned lessons about the nature of science. These lessons include such ideas as observing closely and keep records, accessing resources, and collaborating with each other. Describes the use of a classroom bird station and nature walks in accomplishing the goals. (DDR)

Focuses on how one teacher examined classroom discourse through a unit on tornadoes and natural catastrophes. Defines various types of discourse and discusses how discourse in a 6th grade class was analyzed. Details some of the activities that engaged students. (DDR)

We developed web-based modules addressing fundamental concepts of introductory biology delivered through the LON-CAPA course management system. These modules were designed and used to supplement large, lecture-based introductory biology classes. Incorporating educational principles and the strength of web-based instructional technology, choices…

This paper outlines an e-Learning services architecture offering semantic-based services to students and tutors, in particular ways to browse and obtain information through web services. Services could include registration, authentication, tutoring systems, smart question answering for students' queries, automated marking systems and a student…

This paper considers the work of Martin Heidegger and its relation to situated cognition. The motivation for the paper springs from the perceived misconception that many educators have on situated cognition by applying situated learning strategies in a dualistic orientation, whereas situated cognition is fundamentally relativist (non-dualistic) in…

The objective of this paper is to introduce a standards-based model for adaptive e-learning and to investigate the conditions and tools required by authors to implement this model. Adaptation in the context of e-learning is about creating a learner experience that purposely adjusts to various conditions over a period of time with the intention of…