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Delgado, Cesar – ProQuest LLC, 2009
Size and scale are crosscutting ideas integral to scientific understanding. However, research shows that students have little understanding of the size of objects, particularly objects too small to see with the unaided eye. Using a cross-sectional study with 101 middle-school through undergraduate students, a teaching experiment with 24 middle…
Descriptors: Scientific Concepts, Mathematical Concepts, Measurement, Classification