Three alternative tools to knowledge-based educational modeling were developed, using ideas from knowledge acquisition research, and their effectiveness was compared to that of an established rule-based shell. Children working with the new tools produced higher quality models and developed more positive attitudes. Knowledge acquisition systems and…

Compares dyads of secondary school physics students working on a collaborative modeling task using a text-based model representation, in which correct equations are required to make the model run, with others using a graphical representation, in which the model is build by qualitatively linking variables. (MES)

Describes differences in formative evaluation techniques between instructional designers and subject matter experts. Content analysis based on think-aloud data focusing on differences in task interpretation, problem identification and revision statements, and review strategies is discussed; use of instructional systems design models by…

Presents results of a qualitative study of problem solving in the domain of instructional design. Novice and expert instructional designers worked on a "think aloud" design task, and their instruction protocols were analyzed for problem-solving processes. Analysis revealed that experts and novices used divergent design models and…

Discussion of problems students have with learning about Newtonian dynamics and kinematics focuses on the assumption that learning is promoted through confronting students with their own misconceptions. A computer-based modelling environment--DYNLAB--is explained, and a study conducted with high school boys in Scotland to test it is described. (29…

Examines differences between needs assessment (process of determining the gap between what is and what should be) and task analysis (definition and classification of tasks to improve job performance), and discusses the human productivity model NEBEAT (Needs Education and Training Model), which defines competency as synthesis of processes and…

Presents five simulation models reflecting sequential levels of children's simple arithmetic story problem solving skills. Outputs of the models are compared with data obtained by presenting 60 five- to eight-year-olds with change problems to examine models' deterministic nature. Results indicate the models give an adequate description of behavior…