Describes the Intermediate Science Curriculum Study (ISCS) instructional system and its underlying rationale, and outlines the planning and developmental procedures used to construct this individualized junior high school science program. (JR)

Surveys of program graduates of a model science teacher education program were compared with responses from a national sample of exemplary teachers. Results indicated a high degree of similarity between the two groups and provided evidence that a good preservice science teacher education can have a positive effect on the development of preservice…

The effect of intervention lessons designed to accelerate the development of formal operations taught over a period of two years to adolescents was assessed. Results indicated that the experimental group had achieved a significantly greater gain in cognitive levels than the control group. Implications are discussed. (CW)