This study examined learner-control strategies for selecting problem context and level of instructional support on a computer-based mathematics unit on the metric system. Subjects were 240 sixth grade students assigned to 15 treatments. Performance was lowest under learner-control instructional support conditions even though subjects indicated…

Discussion of various types of feedback used in computer-assisted instruction focuses on a study of low-ability eleventh graders that compared the effectiveness of answer until correct (AUC) feedback with knowledge of correct response (KCR) feedback. Achievement data on posttests as well as time data are analyzed. (11 references) (LRW)