Discussed are expert systems development and teaching, the representation and processing of knowledge, knowledge representation in chemical engineering, and expert systems in chemical engineering. The seven phases of expert system development are illustrated. (CW)

The reviews of articles contained in this issue have been grouped into those dealing with research related to cognitive development and to instruction. In addition, seven science education researchers have provided responses to critiques of their published research. Included are: (1) an analysis of an article designed to persuade researchers to…

Reviews two software programs for Apple series computers. Includes "Orbital Mech," a basic planetary orbital simulation for the Macintosh, and "START: Stimulus and Response Tools for Experiments in Memory, Learning, Cognition, and Perception," a program that demonstrates basic psychological principles and experiments. (CW)

Discusses a study designed to understand 11th-grade students' learning during conversations with their teacher over and about a computer-based Newtonian microworld, Interactive Physics. Illustrates that students' learning was not local but persistent, in that they used appropriate canonical science talk without teacher support. (36 references)…

With the purpose of addressing the area of language choice in computer programming, this paper specifically addresses the use of BASIC as a language for secondary level students. Perspectives are offered on: (1) the role of computers in science education; (2) the differences in quality and intent of PASCAL and BASIC; (3) the role of a…

Discusses the use of a microcomputer in the assessment of middle school pupils in science classes. Describes experimental details, the computer program, test procedures, and results. Concluded that pupils benefit from the immediate feedback provided by computer assessment compared to traditional methods. (CW)

The question of how children solve force and motion problems in computer simulations without explicit knowledge of the underlying physics was investigated. Keystroke sequences made by children were saved and analyzed, and children were interviewed to understand their perception of the relationship between keyboard input and on-screen action. (CW)

Examines the relationships between the development of proportional reasoning strategies and three cognitive variables from Pascual-Leone's and Case's neo-Piagetian theories: (1) degree of field independence; (2) M-space; and (3) short-term storage space. Describes the ability of students to transfer problem-solving schemata to new contexts as well…

This paper describes the methods and outcomes of a 12-year longitudinal study into the effects of an early intervention program, while reflecting back on changes that have occurred in approaches to research, learning and instruction since the preliminary inception stages of the study in the mid 1960s. We began the study to challenge the prevailing…

Problem solving is defined and characteristics of good problem solvers are highlighted. The cognitive processes used in problem solving are discussed. Suggestions for methods which can be used to teach problem solving are provided. Research implications from mathematics education are listed. (CW)

Teaching of computer programming in elementary and secondary schools has become a very popular activity. The purpose of this paper is to review and analyze the empirical research on the benefits of learning computer programming on students' cognition abilities. The paper focuses on the question: Do the skills of computer programming transfer to…

Three learning activities--story generation, reasoning from historical information, and computer modeling--that are designed to help students move toward a more coherent understanding of biological mechanisms are described. A method used to measure a student's level of understanding and their progress during instruction is also described. Ways to…

The impact of enhanced observation or enhanced prediction on scientific reasoning about heat energy and temperature problems was investigated. Instruction was successful in improving prediction and observation skills in the microcomputer-based laboratory environment. (CW)

Described is a computer-based tool, SemNet, which can be used by good and poor students to facilitate, extend, and polish their learning skills. Emphasized are skills associated with meaningful or deep-level learning. The components, use, and theoretical background of the software are discussed. (CW)

Describes mechanisms of thought associated with making predictions. Concludes that successful predictors had high initial knowledge of the subject matter and were formally operational. Unsuccessful predictors had low initial knowledge and were concretely operational. Systematic manipulation, note taking, and higher-level thinking skills were…