This article presents a novel approach for explaining algorithms that aims to overcome various pedagogical limitations of the current visualization systems. The main idea is that at any given time, a learner is able to focus on a single problem. This problem can be explained, studied, understood, and tested, before the learner moves on to study…

R is free, open-source, cooperatively developed software that implements the S statistical programming language and computing environment. The current capabilities of R are extensive, and it is in wide use, especially among statisticians. The sem package provides basic structural equation modeling facilities in R, including the ability to fit…

Students in an introductory computing class participated in a study investigating the impact of using a graphics programming environment (Alice) and pair-programming on confidence, enjoyment and achievement. Sixty-four participants completed a short questionnaire and a content pre-test about computer programming concepts. Students were then…

This paper reports on a design experiment in the domain of number sequences conducted in the course of the "WebLabs" project. We iteratively designed and tested a set of activities and tools in which 10-14 year old students used the "ToonTalk" programming environment to construct models of sequences and series, and then shared…

This paper examines the problem of studying and comparing student software designs. We propose semantic categorization as a way to organize widely varying data items. We describe how this was used to organize a particular multi-national, multi-institutional dataset, and present the results of this analysis: most students are unable to effectively…

This paper examines the contention that learning environments which use IMS Learning Designs can be created by plugging in different components, using generic service descriptions to create the interface between the Learning Design (LD) and the specific tools. There is an alternative viewpoint which claims that generic service descriptions cannot…

I Sing the Body Electric (BODY ELECTRIC) is a fine arts and health promotion program that supports communication of healthy lifestyle choices among youth. BODY ELECTRIC connects youth in 27 high schools with health and education communities in the largest rural geographic education region in a Midwestern state. The three-phase prevention plan…

The Randomized Control Trials (RCT) design and its quasi-experimental kissing cousin, the Comparison Group Trials (CGT), are golden to some and not even silver to others. At the center of the affection, at the vortex of the discomfort, are beliefs about what it takes to establish causality. These designs are considered primarily when the purpose…

In this article, the authors explain how they implemented Design eXchange as a shared collaborative online and physical space for design for their students. Their notion for Design eXchange favors a complex mix of key elements namely: (1) a virtual online studio; (2) a forum for review of all things related to design, especially design with the…

This paper discusses the use of Computer Supported Cooperative Work (CSCW) techniques for computer-aided learning (CAL); the work was started in the context of project Nestor, a joint effort of German universities about cooperative multimedia authoring/learning environments. There are four major categories of cooperation for CAL: author/author,…

NEAT (iNtegrated Environment for Authoring in ToolBook) provides templates and various facilities for the rapid prototyping of computer-based presentations, a capability that is lacking in current authoring systems. NEAT is a specialized authoring system that can be used by authors who have a limited knowledge of computer systems and no…

Research in the area of knowledge-based tutoring systems (KBTS) and intelligent tutoring systems (ITS) has great implications for computer applications in education and training. In a KBTS, course material is represented independently of teacher procedures, so that problems and remedial comments can be generated differently for each student. Such…

This paper is concerned with the recent developments in federal and state legislation regarding cable franchises and their effect on the establishment of a statewide distance learning network. It begins with an overview of recent legislation regarding cable regulations and presents issues regarding distance education. These include linking cable…

When there is something we want to know, we usually ask experts, but rarely do we ask children about their own childhood. This paper looks at children's perceptions and responses in relation to programming on children's television. Topics include: (1) what are children's programs?; (2) when do children become adults?; (3) criteria for quality; (4)…

This book argues that it is time for Americans to rebuild their television system and that translating the public interest into a commitment to the nation's children will take time, education, and public debate. The book affirms that American adults need to consider what public interest means with respect to those who are too young to vote, who…