This study examines the effects of the activity of building systems models for school-based problems on problem solving and on conceptual change in elementary science classes. During a unit on the water cycle in an Asian elementary school, students constructed systems models of the water cycle. We found that representing ill-structured problems as…

Describes a procedure for using commonly available database management systems to produce indexes on microcomputers. Production steps discussed include creation of the database, data entry, database sort, formatting, and editing. (Author/MBR)

This paper reports on the design of an on-line simulation that enhanced preservice teacher practicum experience in the important area of literacy teaching. Research with more than 200 users of the simulation showed that it developed pre-service teacher understanding of complex classroom situations associated with the teaching of literacy by giving…