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Stains, Marilyne; Sevian, Hannah – Research in Science Education, 2015
Students' mental models of diffusion in a gas phase solution were studied through the use of the Structure and Motion of Matter (SAMM) survey. This survey permits identification of categories of ways students think about the structure of the gaseous solute and solvent, the origin of motion of gas particles, and trajectories of solute particles in…
Descriptors: Cognitive Structures, Models, Undergraduate Students, Knowledge Level
Frisby, Sandra – ProQuest LLC, 2012
Purpose: The purpose of this study was to describe, measure, compare, and contrast the perceptions of elementary teachers and principals regarding the degree to which the schools in which they are employed have implemented learning organizations conforming to Senge's (1990) 5 disciplines: mental models, personal mastery, shared vision, team…
Descriptors: Academic Achievement, Institutional Characteristics, Principals, Elementary School Teachers