Some studies of hypertext/hypermedia systems have concluded that there is little evidence supporting its educational efficacy. After examining conceptual and methodological shortcomings of research, this article suggests that the educational potential of hypertext/hypermedia has been underestimated and argues that overcoming these shortcomings…

Discusses how to design courseware programs that integrate benefits of instructionism (linear instruction) and constructionism in a hypermedia structure. A model of feedback that fades in and out is suggested, four examples are explained, and suggestions for redesigning programs are given. (LRW)

Introduces the Inventive Model, a constructivist approach to conceptual change, as a theoretical base for science instruction and for software development in science education. Highlights include the hesitancy of some school systems to implement computer-assisted science instruction, student misconceptions, and cognitive approaches to conceptual…

Discusses the design of online scoring software for computer-based education supporting high psychometric and fairness standards. Describes a system from the point of view of graders and supervisors; the design of the underlying database; data integrity and confidentiality; and the advantages of database design and online grading. (PEN)

Discussion of information exploration and software design in computer-based educational systems focuses on the integration of hypermedia and natural language dialog. AlFRESCO is described, an interactive natural language-centered multimodal system that was developed for users interested in frescoes and paintings. (LRW)

Describes four studies of high school students that examined the effectiveness of user-adaptive computer-aided instruction that explicitly models the cognitive processes of composing for developmental writers and is integrated with classroom composition instruction. Discusses the design and use of the writing software R-WISE (Reading and Writing…

Discusses research evidence for not including microcomputers in preschool environments; develops a theoretical base favoring computer use in early childhood that includes views of Papert, Piaget, Erikson, and competence development; and offers directions for software development through a review and description of successful microworld programs.…

Describes the design principles behind a set of research-based software microworlds included in the "Building Blocks" program, a pre-kindergarten to grade 2 software-based mathematics curriculum. Discusses how to help children extend and mathematize their everyday activities and presents the nine-step design process model used.…

Describes "Glass-box Interpreter" a low-level program visualization tool called Bradman designed to provide a conceptual model of C program execution for novice programmers and makes visible aspects of the programming process normally hidden from the user. Presents an experiment that tests the efficacy of Bradman, and provides…

Explains TIMA (Tools for Interactive Mathematical Activity), that were designed to provide elementary schools children with contexts in which they could enact mathematical operations. Discusses differences from drill and practice software; provides examples of how the TIMA were used by children to engage in cognitive play; and emphasizes the…

Discussion of the time needed to create computer-based instruction focuses on descriptive analyses of production data gathered from novice instructional designers and novice authors who used a commercial authoring system to produce computer-based lessons. Production ratios are explained, and future research plans are discussed. (Contains five…

Investigates how the design, creation, and revision of animated models that tell a science story can assist young bilingual children in science learning. Findings show that the animated software provided students with access to a world that is normally unavailable in real time; they were also able to manipulate science concepts and connect…

Describes the development of a computer-based learning courseware that presented associative learning between abstract and concrete domains and discusses results of a study of college students that determined whether various audio-visual combinations and differences in IQ levels influenced learning and long-term retention using the courseware.…

Discusses improving mathematical reasoning through the design of computer microworlds and evaluates a computer-based learning environment that uses multiple representations to improve undergraduate students' conception of average speed. Describes improvement of students' estimates of average speed by using visual feedback from a simulation.…

Reports research findings of an experimental design in which cooperative-learning strategies were applied to closed-lab instruction of computing concepts. SimCPU, a software package specially designed for closed-lab usage was used by 171 high school students of four classes. Results showed that collaboration enhanced learning and that blending…