Describes information-processing research, showing how computer models are used to explain thinking and how information processing approaches can be used systematically. Clarifies why students find factor-label method so difficult to master and discusses guidelines and suggestions for using information-processing ideas. (JM)

Instrumentation, methodology, and analysis techniques were developed to measure changes in adolescents' (N=10) skills in linear distance estimation. Microcomputers were used to present and control amount of information available to assist students in said estimations. Results and implications are reported. (Author/SK)

Describes and evaluates science teachers' implementation of microcomputers at a field-test site that was part of a program to encourage literacy of science teachers in the use of microcomputers (ENLIST-Micros). Discusses why only 33 percent of the teachers used computers one year after the training. (Author/YP)