Teaching is a complex activity that requires making ongoing multiple decisions and sporadic, responsive actions all while performing preplanned prescribed tasks. Evidence of certain aspects of teaching can be best assessed with a well-designed observation instrument. This instrument was designed to assess the enactment of the essential elements of…

This paper describes a simple, rapid and low-cost technique for growing bacteria (or other microbes) in an environmental gradient, in order to determine the tolerance of the microbial population to varying concentrations of sodium chloride ions, and suggests how the evolutionary response of a microbial population to the selection pressure of the…

Presents courses, projects and teaching styles relating to different areas of science that are used in British schools. School science for the education of all, chemistry-O level syllabus, and teaching styles in the Nuffield A-level Physics course are examples of information presented. (HM)

This report is the third of three volumes describing the results of the evaluation of the National Science Foundation (NSF) Local Course Improvement (LOCI) program. This volume describes 12 project case studies undertaken as part of that evaluation. Three projects were designed to increase individualization of college science teaching; two…