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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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Stamovlasis, Dimitrios; Papageorgiou, George; Tsitsipis, Georgios – Chemistry Education Research and Practice, 2013
Research in cognitive psychology and science education has acknowledged two antagonistic theoretical perspectives concerning students' knowledge. One perspective considers students' knowledge as coherent or theory-like, explaining the learning process in terms of framework theories and stable mental models, whereas the other considers it…
Descriptors: Hypothesis Testing, Scientific Concepts, Cognitive Psychology, Cognitive Ability
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Stamovlasis, Dimitrios; Tsitsipis, Georgios; Papageorgiou, George – Chemistry Education Research and Practice, 2012
In this study, structural equation modeling (SEM) is applied to an instrument assessing students' understanding of the particulate nature of matter, the collective properties and physical changes, such as melting, evaporation, boiling and condensation. The structural relationships among particular groups of items were investigated. In addition,…
Descriptors: Structural Equation Models, Student Evaluation, Scientific Concepts, Chemistry
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Stamovlasis, Dimitrios; Tsitsipis, Georgios; Papageorgiou, George – Chemistry Education Research and Practice, 2010
This work uses the concepts and tools of complexity theory to examine the effect of logical thinking and two cognitive styles, such as, the degree of field dependence/independence and the convergent/divergent thinking on students' understanding of the structure of matter. Students were categorized according to the model they adopted for the…
Descriptors: Cognitive Style, Logical Thinking, Psychometrics, Scores