Examines the impact of contextual factors on teachers' roles and teachers' roles in contributing to the effective use of computer-aided instruction in Singapore's secondary schools. A path modeling approach was adopted whereby factors during different stages of the teaching and learning are examined before the final outcome, the student's learning…

Describes an instructional model for teaching abstract data types (ADTs) to high school students. Presents research results regarding students' conceptualizations of ADTs and their strategies of using them in computer science problem solving. To implement the ADTs, "black boxes" were used. (AEF)

Discusses study that was designed to examine the effects of microcomputers on the ecology of secondary special education classrooms and explains the MICROS Observation System, which was used to collect observational data. The effects of microcomputer use on student behavior and teacher behavior are described. (25 references) (Author/LRW)