Discussion of hypertext structures focuses on three studies of preservice teachers that assessed the effects of different methods of explicitly mapping expert knowledge structures onto hypertext on the acquisition of structural knowledge. Topics addressed include time on task, semantic networking, cognitive limitations of browsing behavior, and…

Discusses the instructional effects of item organization and feedback density on posttest scores when using multiple-choice questions in computer-based instruction, based on two studies: one with third- and fourth-grade students, and one with eighth-grade low ability students classified as at risk. (27 references) (LRW)