Four conference papers are reviewed in this introduction to a symposium. The first paper is by Clements and Merriman, who make a case for the reflection of Steinberg's information processing componential model of cognitive processes in the LOGO language and computational environment; present a series of experiments that attempted to tailor the…

Describes insights and attitudes toward computer-based learning which developed during design of "Computer Power," an introductory programming curriculum for junior high, high school, and junior college students. Learning and thinking, computer power meta-goals, and computer power subject matter goals are highlighted. (EJS)

An overall schema of interpretation for programming instructors is given, so that the misconceptions students develop in programming can be determined more readily. Types of language-independent and -dependent bugs, how they can be identified, and how to help students overcome them are addressed. (MNS)