1. Bruner, J. S. (1964). Some theorems on instruction illustrated with reference to mathematics.The sixty-third yearbook of the national society for the study of education, Part I, 63, 306–335.
2. Case, R. (1978). A developmentally based theory and technology of instruction.Review of Educational Research, 48, 439–463.
3. Case, R., & Bereiter, C. (1984). From behaviorism to cognitive behaviorism to cognitive development: Steps in the evolution of instructional design.Instructional Science, 13, 141–158.
4. Clark, R. E. (1983). Reconsidering research on learning from media.Review of Educational Research, 53(4), 445–459.
5. Clark, R. E. (1988). The future of technology in educational psychology. In M. C. Wittrock & F. Farley, (Eds.),The future of educational psychology. Hillsdale, NJ: Lawrence Erlbaum Associates.