Describes computed tomography (CT), a medical imaging technique that produces images of transaxial planes through the human body. A CT image is reconstructed mathematically from a large number of one-dimensional projections of a plane. The technique is used in radiological examinations and radiotherapy treatment planning. (Author/MM)

In this article, the author concentrates on the fourth chapter of Hubert Dreyfus' (2001) "On the Internet." This is entitled "Nihilism on the Information Highway: Anonymity vs. Commitment in the Present Age". The chapter focuses on Kierkegaard's (1846/2001) review of "The Present Age". From this vantage point it may be possible to look back at the…

This article introduces the architecture and implementation of an authoring system capable of modular and standard compatible course development. This system enables the aggregation of learning objects into higher course structures and reuse in different learning scenarios. The concept of modular course development is based on the construction kit…

In high school biology, students are challenged by many molecular concepts and structures. They meander through a number of molecular structures, some in macromolecular form: carbohydrates, amino acids, fatty acids, nucleotides. Student difficulties arise in part from inability to visualize what they can't easily see. Students struggle moving from…

This article is a brief debate on the pros and cons of allowing students to use instant messaging (IM) in school. On one hand, teenagers' desire to socialize can overcome other priorities and schools may set policies to ban instant messaging. The contrary view is that schools should embrace the IM technology being popularized by youth and find…

In this article, the author, a doctoral candidate from the School of Information at the University of Texas-Austin, describes the experience gathered from her attempt to redesign her existing Web sites in order to supply online resources for Slavic and Byzantine studies. The use of participatory design, which involves the users in creating the…

With more than 4 billion web pages in its database, Google is suitable for many different kinds of searches. When you know what you are looking for, Google can be a pretty good first choice, as long as you want to search a word pattern that can be expected to appear on any results pages. The problem starts when you don't know exactly what you're…

Recent research on instructional technology has focused increasingly on the potential of computer support to promote collaborative learning. Socio-cultural theories have been imported from cognate fields to suggest that cognition and learning take place at the level of groups and communities as well as individuals. Various positions on this issue…

An important challenge faced by many teachers as they involve students in science investigations is measuring (assessing) students' progress. Our detailed requirements analysis in a particular school district led to the idea that what teachers need most are ways to increase the quality of the information they have about what students know and can…

This brief article describes the events and discussions that took place at the annual Fall Tech Forum event, hosted at the IBM Conference Center in Palisades, New York. At the Forum, practitioners and leaders gathered for a day of professional development sessions and networking with colleagues and industry experts. The highlights of the Forum are…

Videos and DVDs give the teachers more flexibility than slide projectors, filmstrips, and 16mm films but teachers and students are excited about a new technology called streaming. Streaming allows the educators to view videos on demand via the Internet, which works through the transfer of digital media like video, and voice data that is received…

Online orientation is provided due to the flexibility of online learning. The online orientation consists of the GIANT steps which stands for Get support, Identify your curriculum, Assemble your program, Navigate students through the pilot project and Test students.

One of the most remarkable devices embedded in a Microsoft Excel spreadsheet is known as the spinner. Its staggering simplicity is undoubtedly its strength. As an incrementing device that allows graphs to dance across the screen, it gives the concept of variability a whole new meaning. Spinners and their close cousins scroll bars can be grabbed…

In this article, the authors describe a free interactive circular geoboard environment that can lead learners to pose mathematical questions. They list three major ways in which one can imagine the environment and problems being used by teachers. Among other things, they discuss how the environment could support teaching and learning, and how the…

The use of computers and the Internet has successfully enabled educational institutions to provide their students and staff members with various online educational services. With the recent developments in mobile technology, further possibilities are emerging to provide such services through mobile devices such as mobile phones and PDAs. By…