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Understanding Quantum Numbers: Students' Verbal Descriptions and Pictorial Representations of the Atomic Structure
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Zarkadis, Nikolaos; Papageorgiou, George; Markos, Angelos – International Journal of Science Education, 2021
The study aims to investigate students' conceptualisation of the quantum numbers concept through their verbal descriptions and pictorial representations of the corresponding atomic structures. The study was conducted with the participation of 192 12th-grade students from six secondary schools in Northern Greece, via a paper-and-pencil test,…
Descriptors: Nuclear Physics, Number Concepts, Grade 12, Secondary School Students
What Fills the Gap between Discrete and Dense? Greek and Flemish Students' Understanding of Density
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Vamvakoussi, Xenia; Christou, Konstantinos P.; Mertens, Lieve; Van Dooren, Wim – Learning and Instruction, 2011
It is widely documented that the density property of rational numbers is challenging for students. The framework theory approach to conceptual change places this observation in the more general frame of problems faced by learners in the transition from natural to rational numbers. As students enrich, but do not restructure, their natural number…
Descriptors: Foreign Countries, Mathematics Instruction, Comparative Education, Intervals