Describes a study of second, third, and fourth grade children in Israel to determine if computer assisted instruction is utilized differently by different groups of students (younger and older), and extent to which effort expenditure (total amount of time a child is engaged at the computer) is related to achievement. (MBR)

Describes study of undergraduates that compared the effects of different small group sizes on learner achievement using computer controlled interactive videodisc. The results of pretests and posttests are reported, learning achievement and instructional time are used to calculate an instructional efficiency index, and further research is…