This document discusses how the organization of instruction influences the encoding and structuring of new material in the memory and the subsequent transfer of such information to novel situations. A theory of instruction for problem solving that considers relevant cognitive variables and that specifies the conditions for productive learning is…

The purpose of this study was to evaluate a practical procedure for determining the optimum sequencing of pictorial classification tasks in science using mean difficulty indices generated by a standard sample of grade two students. Acquisition of such skills can affect the learner's performance on subsequent material and the teacher's efforts in…

Reported is the production of an instructional methodology harmonizing with Piagetian theory and enabling teenage students, including those initially mismatched to the task, to understand the mole, as revealed by their performances on a test of basic skills considered fundamental to that concept. (DS)