Indicates that both novices and experts considered (1) definitions more important than facts, though novices applied this rule more strongly, and (2) information high in the passage hierarchy more important than lower level information. Finds that hierarchical level has a greater effect on the perceived importance of definition than facts. (JD)

Techniques of reversing English-Russian scientific and technical dictionaries into Russian-English versions through semi-automated compilation are described. Sections on manual and automatic processing discuss pre- and post-editing, the task program, updater (correction of errors and revision by specialist in a given field), the system employed…

Presents the results of an analysis of science-classroom lab talk which focuses on topics and manner of talk as an approach to understanding the social context of undergraduate lab work. Argues that lab instructors should pay attention to how "scientific" the lab talk is, and to sociability among students. Contains 32 references.…

Uses a theoretical framework derived from Vygotsky's writings to review studies of science classroom discourse interactions between teachers and students. Suggests that shifting the research focus from isolated instructional activities to promote conceptual change toward viewing such activities in the critically influential context of an ongoing…