Reviews possible sources of reinforcement in computer assisted instruction and systematic utilization of these sources in courseware design. Sources reviewed include reinforcement from the machine itself; from the content of the instructional modules and its arrangement in a learning sequence; and from sources external to the modules. (MBR)

Reviews current literature on coherence in written text, defines coherence in broad terms, and then presents a three-lesson revision unit based on modern coherence principles. In this unit, students "deconstruct" assignment prompts, prepare first drafts, examine another student's first draft, and then revise their essays and examine the revisions.…

Looks at effective teaching research in order to identify a "correct" teaching sequence. Analyzes rehearsals to determine how teachers with varied levels of training and experience conformed to the optimal sequence. Finds that teachers spent too little time in correct sequences and failed to use enough positive reinforcement. (Author/LS)