Describes the application of the Piaget-based learning cycle technique for teaching an introductory organic chemistry course. Explains the step-by-step process used to convert a lecture course into a discussion-based active learning course. A learning cycle provides students with concrete material and aids them in understanding abstract concepts…

Describes a study which was designed to determine the effect of a 25-hour introductory qualitative analysis course on high school students' understanding of formal concepts related to electrolytes. Suggests that introductory concrete experiences better prepare students to deal with more formal abstract concepts. (TW)

Defines M-demand as the maximum number of schemes that the subject must activate simultaneously in the course of executing a task. Discusses the effect of M-demand on problem solving. Uses algorithms to reduce M-demand. Describes the role of algorithms in problem solving. (MVL)