Describes the procedures and techniques employed in a peer-group approach for promoting conceptual change. Explains how a series of cards were used to challenge student's conceptions of energy. Suggests that a systematic development of skills is needed to maximize the benefits of a peer group discussion approach. (ML)

Describes the use and rationale of "Silent Teaching," a teaching technique in which the teacher remains silent as students generate and evaluate hypotheses while trying to understand an as-yet undiscovered concept. (MDH)