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Kala, Nesli; Yaman, Fatma; Ayas, Alipasa – International Journal of Science and Mathematics Education, 2013
The present study describes high school students' conceptions about acids and bases in terms of pH, pOH, microscopic level, strength, and concentration. A total of 27 high school students participated in the study. The data was collected using 3 POE tasks and a semi-structured interview. The data analysis demonstrated that most of the students had…
Descriptors: Chemistry, High School Students, Misconceptions, Semi Structured Interviews
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Saglam, Yilmaz; Karaaslan, Emre Harun; Ayas, Alipasa – International Journal of Science and Mathematics Education, 2011
This study aimed to investigate the impacts of contextual factors on the use of students' conceptions. A total of 106 students received a questionnaire involving open-ended questions on acid-base and equilibrium concepts. Of these students, 16 students who provided complete and accurate responses to the questions participated in an interview. In…
Descriptors: Concept Formation, Misconceptions, Interviews, Questionnaires
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Ayas, Alipasa; Ozmen, Haluk; Calik, Muammer – International Journal of Science and Mathematics Education, 2010
The aim of the present study is to elicit students' understanding of the particulate nature of matter via a cross-age study ranging from secondary to tertiary educational levels. A questionnaire with five-item open-ended questions was administered to 166 students from the secondary to tertiary levels of education. In light of the findings, it can…
Descriptors: Scientific Concepts, Misconceptions, Questionnaires, Problem Based Learning
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Calik, Muammer; Ayas, Alipasa; Coll, Richard K. – International Journal of Science and Mathematics Education, 2009
This paper reports on an investigation on the use of an analogy activity and seeks to provide evidence of whether the activity enables students to change alternative conceptions towards views more in accord with scientific views for aspects of solution chemistry. We were also interested in how robust any change was and whether these changes in…
Descriptors: Test Items, Chemistry, Long Term Memory, Foreign Countries
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Calik, Muammer; Ayas, Alipasa; Coll, Richard Kevin – International Journal of Science and Mathematics Education, 2007
This paper reports on the use of a constructivist-based pedagogy to enhance understanding of some features of solution chemistry. Pre-service science teacher trainees' prior knowledge about the dissolution of salts and sugar in water were elicited by the use of a simple diagnostic tool. The test revealed widespread alternative conceptions. These…
Descriptors: Constructivism (Learning), Prior Learning, Chemistry, Science Teachers