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Papageorgiou, George; Amariotakis, Vasilios; Spiliotopoulou, Vasiliki – Science Education International, 2019
The illustration characteristics of 221 visual representations (VRs) of submicroscopic particles in nine Greek secondary chemistry school textbooks from the last three decades were analyzed. This analysis was done to develop a taxonomy that could help science teachers and curricula designers evaluate the efficacy of such characteristics on student…
Descriptors: Foreign Countries, Science Instruction, Chemistry, Textbooks
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Angeloudi, Anastasia; Papageorgiou, George; Markos, Angelos – Science Education International, 2018
The study explored the possibilities to improve students' argumentation ability concerning factors that affect dissolving, through the implementation of two versions of a teaching scheme, with and without particle theory. The participants (age range 10-11, n = 27) belonged to two fifth-grade classes of a primary school in Northern Greece. Data…
Descriptors: Science Instruction, Persuasive Discourse, Grade 5, Elementary School Students