Four types of fundamental structures are briefly described and illustrated: the learning hierarchy, the procedural hierarchy, the taxonomy, and the model. Then a theoretical framework is presented for classifying types of subject matter content, and some implications of these content classifications are discussed. (VT)

New knowledge is made meaningful by relating it to prior knowledge. Although meaningfulness usually relates new knowledge to prior superordinate knowledge, arbitrarily meaningful knowledge, coordinate, subordinate, and analogic ideas, experiential knowledge, and cognitive strategy also facilitate learning. Optimization of prior knowledge is done…

Description of computer-based simulations focuses on the instructional functions of simulations and phases in the learning processes that should be activated by educational simulations. Highlights include a general model for simulation design; degree of learner control; complexity of the content; the role of the learner; and motivational…