Discusses three issues related to the use of positive and negative examples during instruction: sequence, quality, and quantity of examples. Some possible resolutions based on available research evidence and theoretical work in the field are suggested. Twenty-eight references are listed. (Author/LLS)

Examines issues related to the way a teacher acting as instructional designer deals with the content or knowledge base of the instructional materials being developed, including the nature of knowledge, learners' schemata, organization of content, facilitating abstract thinking, and standards of accuracy for knowledge representation. (24…