Describes a new way of classifying uses of educational technologies based on a four-part division: inquiry, communication, construction, and expression. This taxonomy is compared to previous taxonomies of educational technologies. The utility of the taxonomy is tested by using it to classify "advanced applications of technologies"…

Critical examination of reviews of the literature on computer-assisted instruction (CAI) compares and evaluates three traditional and 13 quantitative reviews. Synthesis of the findings indicates that typical effect of CAI is to raise outcome measures by 0.42 standard deviation units, placing average students at 66th percentile of control group…