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Taibu, Rex; Rudge, David; Schuster, David – Physical Review Special Topics - Physics Education Research, 2015
The term "weight" has multiple related meanings in both scientific and everyday usage. Even among experts and in textbooks, weight is ambiguously defined as either the gravitational force on an object or operationally as the magnitude of the force an object exerts on a measuring scale. This poses both conceptual and language difficulties…
Descriptors: Textbooks, Physics, Science Instruction, Introductory Courses
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Lake, David – International Journal of Science Education, 2005
In an investigation of 149 pre-service primary teachers' understanding of the terms "pure" and "natural," the participants were asked to provide definitions of the two words, and classify various substances including drugs of abuse, pharmaceuticals, nutriceuticals, and household substances as either natural or not natural, and…
Descriptors: Foreign Countries, Preservice Teachers, Elementary School Teachers, Figurative Language