Evidence collected on the effectiveness of four educational technologies is briefly reviewed. The authors conclude that there is reasonable evidence that computer-assisted instruction can have at least a modest effect on improving learning and probably more when its instructional approaches are properly matched to instructional objectives, that…

Popular electronic tools for learning--tutorials, educational databases, learning nodes, simulations and educational games--are described, and their functions as part of the learning system are examined using Gagne's Events of Instruction model. Figures representing tutorial models are included. (Contains seven references.) (SLW)