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Zarkadis, Nikolaos; Stamovlasis, Dimitrios; Papageorgiou, George – European Journal of Physics Education, 2021
The present study investigates the effect of three neo-Piagetian constructs, namely Formal Reasoning (FR), Field Dependence/Independence (FDI) and Divergence (DIV), as well as the effect of age and gender, on students' portrayed representations of the atomic structure, considering their degree of coherence. For this purpose students'…
Descriptors: Secondary School Students, Piagetian Theory, Nuclear Physics, Cognitive Style
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Zarkadis, Nikolaos; Papageorgiou, George – International Journal of Science Education, 2020
The present work explores students' repertoire of explicit knowledge fragments relevant to the atomic structure, seeking to answer which of those and through which routes are activated by students when constructing their explanations for some everyday situations. For this purpose, six tasks describing different situations were given to 225…
Descriptors: Nuclear Physics, Grade 10, Grade 11, Secondary School Students
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Papageorgiou, George; Amariotakis, Vasilios; Spiliotopoulou, Vasiliki – Chemistry Education Research and Practice, 2017
The main objective of this work is to analyse the visual representations (VRs) of the microcosm depicted in nine Greek secondary chemistry school textbooks of the last three decades in order to construct a systemic network for their main conceptual framework and to evaluate the contribution of each one of the resulting categories to the network.…
Descriptors: Chemistry, Science Instruction, Textbooks, Textbook Content
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Zarkadis, Nikolaos; Papageorgiou, George; Stamovlasis, Dimitrios – Chemistry Education Research and Practice, 2017
Science education research has revealed a number of student mental models for atomic structure, among which, the one based on Bohr's model seems to be the most dominant. The aim of the current study is to investigate the coherence of these models when students apply them for the explanation of a variety of situations. For this purpose, a set of…
Descriptors: Cognitive Structures, Schemata (Cognition), Models, Nuclear Physics
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Papageorgiou, George; Markos, Angelos; Zarkadis, Nikolaos – Science Education International, 2016
This work investigates the formation of particular student profiles based on of their ideas relating to basic characteristics of the atom. Participants were secondary students of 8th, 10th and 12th grades from Northern Greece (n = 421), with specific cohort characteristics e.g. age, grade and class curriculum, and individual differences, e.g.…
Descriptors: Foreign Countries, Secondary School Students, Grade 8, Grade 10
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Papageorgiou, George; Markos, Angelos; Zarkadis, Nikolaos – Chemistry Education Research and Practice, 2016
The current study aims to investigate students' representations of the atomic structure in a number of student cohorts with specific characteristics concerning age, grade, class curriculum and some individual differences, such as formal reasoning and field dependence/independence. Two specific task contexts, which were designed in accordance with…
Descriptors: Science Instruction, Chemistry, Molecular Structure, Nuclear Energy
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Kypraios, Nikolaos; Papageorgiou, George; Stamovlasis, Dimitrios – International Journal of Environmental and Science Education, 2014
In this study, students' understanding of chemical changes was investigated in relation to four individual differences, related to logical thinking, field dependence/independence, convergence and divergence thinking. The study took place in Greece with the participation of students (n = 374) from three grades (8th, 10th and 12th grades) of…
Descriptors: Science Instruction, Secondary School Science, Grade 8, Grade 10