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Download full textGridos, Panagiotis; Avgerinos, Evgenios; Deliyianni, Eleni; Elia, Iliada; Gagatsis, Athanasios; Geitona, Zoi – European Educational Researcher, 2021
This study aims to examine the relation between spatial ability and creativity in Geometry. Data was collected from 94 ninth graders. Three spatial abilities were investigated: spatial visualization, spatial relations and closure flexibility. As for students' creativity, it was examined through a multiple solution problem in Geometry focusing on…
Descriptors: Spatial Ability, Creativity, Geometry, Problem Solving
Direct linkPanaoura, Areti; Michael-Chrysanthou, Paraskevi; Gagatsis, Athanasios; Elia, Iliada; Philippou, Andreas – International Journal of Science and Mathematics Education, 2017
This article focuses on exploring students' understanding of the concept of function concerning three main aspects: secondary students' ability to (1) define the concept of function and present examples of functions, (2) solve tasks which asked them to recognize and interpret the concept of function presented in different forms of representation,…
Descriptors: Secondary School Students, Mathematics Instruction, Mathematical Concepts, Concept Formation
Deliyianni, Eleni; Gagatsis, Athanasios; Elia, Iliada; Panaoura, Areti – International Journal of Science and Mathematics Education, 2016
The aim of this study was to propose and validate a structural model in fraction and decimal number addition, which is founded primarily on a synthesis of major theoretical approaches in the field of representations in Mathematics and also on previous research on the learning of fractions and decimals. The study was conducted among 1,701 primary…
Descriptors: Fractions, Problem Solving, Arithmetic, Numbers
Panaoura, Areti; Gagatsis, Athanasios; Deliyianni, Eleni; Elia, Iliada – Educational Psychology, 2009
Cognitive development of any concept is related with affective development. The present study investigates students' beliefs about the use of different types of representation in understanding the concept of fractions and their self-efficacy beliefs about their ability to transfer information between different types of representation, in relation…
Descriptors: Secondary Education, Self Efficacy, Factor Analysis, Cognitive Development
Modestou, Modestina; Elia, Iliada; Gagatsis, Athanasios; Spanoudis, Giorgos – International Journal of Mathematical Education in Science and Technology, 2008
In this study, we attempt to put in question students' spontaneous and uncritical application of the simple and neat mathematical formula of linearity. This is impelled with the help of a written test involving geometrical problems, which is based on an original experimental setting. In this setting, grade 9 and 10 students were instructed first…
Descriptors: Foreign Countries, Grade 9, Grade 10, Mathematical Concepts
Elia, Iliada; Panaoura, Areti; Eracleous, Anastasia; Gagatsis, Athanasios – International Journal of Science and Mathematics Education, 2007
The present study explores pupils' constructed definitions of the concept of function in relation to their abilities in dealing with tasks of functions involving different forms of representations and problem solving tasks. A major concern is also to examine the interrelations between these three ways of thinking about or dealing with the concept…
Descriptors: Definitions, Problem Solving, Foreign Countries, Mathematics Instruction
