Alipaşa Ayas

Bilkent University · Educational Sciences

The purpose of this study is to meta-analytically evaluate research that used chemical bonding-based interventions to improve academic performance. Through meta-analysis, the present study used several keyword patterns (e.g., chemical bonding, experimental, chemistry education, science education) via relevant databases (e.g., ERIC, Springer Link, T...

Through a meta-analysis, this study examines how effective particulate nature of matter (PNM)-based intervention studies are at improving academic performance. Well-known databases (e.g., ERIC, Springer Link, Taylor & Francis, and ScienceDirect) were used to look for the PNM-based intervention studies via specific keyword patterns. Also, a manual s...

The aim of this study was to investigate the effects of using a 5Es learning model on the pre-service science teachers’ conceptual understanding and science process skills for ‘gases and gas laws.’ The sample of the study consisted of a total of 49 pre-service science teachers enrolled a ‘Science Laboratory Practices-I’ course within the department...

The purpose of this study was to enhance grade 11 students’ conceptual understanding of fundamental acid-base models using Predict-Observe-Explain based animated movies (POE-AM). Twelve grade 11 students participated in the study. To collect data, the students’ responses to the POE-AM tasks and interview protocols were used. The findings indicated...

Teachers’ further success in and commitment to their profession are shaped by their experiences in the early years of their careers. Being aware of the challenges that novices face would be helpful for teacher-educators in a way that would support pre-service teachers thoroughly. The goal of the current research is to ascertain the perceptions of s...

This study is aimed to enrich the worksheets, which are based on the constructivist learning approach for the concepts of half-life and radioactive decay, with computer-assisted activities. For this purpose, the worksheet developed for the constructivist learning theory related to half-life is enriched with virtual experiment and animation, and the...

Z Bu çalışmanın amacı bilimsel açıklama kavramını farklı teorik yaklaşımlar çerçevesinde incelemektir. Tümdengelimli-yasa bağımlı açıklama modeli, İstatistiksel/olasılıklı açıklama modeli, Nedensel model, Pragmatik model ve Kanıt temelli model temelinde bilimsel açıklama kavramı bu çalışma kapsamında tanımlanmaya çalışılmıştır. Çalışma sonunda elde...

In this study, the effect of the context-based approach on pre-service primary school teachers' understanding of matter and its states and their attitude towards chemistry was investigated. Using a simple experimental design, the study was conducted with 35 pre-service primary school teachers who were exposed to context-based material with storylin...

Although concept maps have been used as alternative assessment methods in education, there has been an ongoing debate on how to evaluate students' concept maps. This study discusses how to evaluate students' concept maps as an assessment tool before and after 15 computer-based Predict–Observe–Explain (CB-POE) tasks related to acid–base chemistry. 1...

Lifelong Learning (LLL) is defined as all learning activities undertaken throughout life with the aim of improving knowledge, skills and competences, within a personal, civic and social and/or employment-related perspective. This article aims at discussing the main issues in LLL, using the approach in the European Union countries. Challenges in Tur...

The purpose of this study is to develop a laboratory activity based on 5E learning model enriched with different conceptual change methods such as computer animations, analogy, concept mapping, worksheet and hands-on activities for eliminating prospective science teachers’ (PSTs) alternative conceptions on factors affecting the reaction rate and im...

The study aimed to investigate whether classroom norm perspective influence the students' capability of elucidating a natural phenomena and beliefs about scientific explanation. In particular, our objective was to explore the process by which the norm for scientific explanation was established and discover how the students' explanation and their be...

The research presented in this paper consisted of an investigation of the effectiveness of a four-step constructivist-based teaching activity on student understanding of how pressure and temperature influence the dissolution of a gas in a liquid. Some 44 Grade 9 students (18 boys and 26 girls) selected purposively from two school classes in the cit...

The aim of this study is to develop computer assisted instructional material including story and animations produced by using the Flash programs for the “Types of Radioactivity Degradation” in nuclear chemistry. A story called “Guess who we are? “ is improved in order to take students’ attention to the lessons, improve the period of students’ keepi...

The aim of this study is to determine alternative conceptions of prospective science teachers about the concepts of “Evaporation and Boiling”, “Acid-Base Neutralization Reactions”, “Dissolution and Factors Affecting Solubility”, “Gas Laws”, “Factors Affecting Reaction Rate” and “Electrochemical Cells”. The sample of the study conducted according to...

The use of concept mapping as a tool to measure the meaningful learning of students is the focus of this study. The study was carried out with 24 last year students (22 years old) from the Department of Chemistry Teaching at Fatih Faculty of Education, Karadeniz Technical University (KTU). Prospective Chemistry Teachers (PCT) were asked to create c...

ZET Bu çalışmada, fen ve teknoloji dersi öğretmen adaylarının bilimsel süreç becerilerini ölçmeye yönelik, geçerliği ve güvenirliği sağlanmış çoklu formda bilimsel süreç becerileri testi (BİSBET) geliştirmek amaçlanmıştır. Bu amaçla ölçülecek davranışın niteliği dikkate alınarak, son zamanlarda program geliştirmeciler tarafından da öngörülen ölçme-...

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...

It is well known that laboratory applications are of significant importance in chemistry education. However, laboratory applications have generally been neglected in recent educational environments for a variety of reasons. In order to address this gap, this study examined the effect of a virtual chemistry laboratory (VCL) on student achievement am...

ZET Bu çalışmada, fen ve teknoloji dersi öğretmen adaylarının bilimsel süreç becerilerini ölçmeye yönelik, geçerliği ve güvenirliği sağlanmış çoklu formda bilimsel süreç becerileri testi (BİSBET) geliştirmek amaçlanmıştır. Bu amaçla ölçülecek davranışın niteliği dikkate alınarak, son zamanlarda program geliştirmeciler tarafından da öngörülen ölçme-...

The purpose of this study is to examine high school students’ misconceptions and views regarding effects of changing concentration and volume on overall equilibrium and Kc in a system at equilibrium. The sample includes 45 students selected from 11th graders of two high schools in the center of Trabzon. The study was conducted in 2008–2009 academic...

The aim of this study was to investigate the effects of activities developed based on a four-step constructivist approach on students' understanding and explaining real-life problems about reaction rate concepts in chemistry. The study was carried out with 41 eleventh grade students, from two different classes attending a secondary school in Turkey...

The lab applications, which were started to be applied through mid 19th century, not only provide a new point of view but also bring about a new dimension to the lessons. At early times they were used to prove theoretical knowledge but lately they turned into environments where students freely discover knowledge as an individual or in groups. The a...

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 or...

In the present study, it is aimed to determine effects of worksheets on students" achievement on the factors affecting equilibrium. The study was carried out with a quasi-experimental design. Data were collected through chemical equilibrium concept test, semi structured interviews and unstructured observations. The sample was 44 eleventh grade stud...

This article reports on the development of a Predict–Observe–Explain, POE-based teaching strategy to facilitate conceptual change and its effectiveness on student understanding of condensation. The sample consisted of 52 first-year students in primary science education department. Students’ ideas were elicited using a test consisting of five probe...

Learning outcomes are steps for children in classrooms to climb up the stairs of science and feel how knowledge comes into existence in different science disciplines. Science education concentrates on several aspects from the nature of science to science process skills at one end of the continuum to, at the other end developing basic concepts, unde...

The purpose of this study is to develop a laboratory activity based on 5E learning model enriched with different conceptual change methods such as computer animations, conceptual change text, worksheet and hands-on activities for eliminating prospective science teachers' (PSTs) misconceptions of 'electrochemical cells' and improving their SPS. A gr...

This study was conducted with the purpose of examining capacity to determine of Prospective Chemistry Teachers (PCT) Science Process Skills (SPS) on different chemistry experiments. The study was carried out with document analyses in the academic year of 2008–2009 at the Faculty of Education Karadeniz Technical University in Turkey. The sample grou...

The lab applications, whic4h were started to be applied through mid 19th century, not only provide a new point of view but also bring about a new dimension to the lessons. At early times they were used to prove theoretical knowledge but lately they turned into environments where students freely discover knowledge as an individual or in groups. The...

A worksheet related to subject of physical and chemical changes were developed in this study. In the process of development, the activity was implemented with 94 students from Primary Science Education Department at Karadeniz Technical University Fatih Education Faculty in the General Laboratory-II. This activity constitutes of four phase. The firs...

The main aim of this research is to find out the effect of analogy and laboratuary based instructions on student achievement about chemical equilibrium in comparasion with traditional instruction. Semi-experimental research method was used. The sample was composed of 65 students from a high school in Trabzon. The classes were randomly determined as...

The objective of this study is to compare current chemistry teaching program and former program in terms of their basic qualities for 9th grade. These basic qualities are related to questions on what is thought why and how, student acquisitions, teaching applications, measurement and evaluation, topics and length, topic and concept order, relations...

The aim of this study is to apply a worksheet about the concepts of physical and chemical change and evaluate its results. Case study research methodology was used in this study. The sample consists of total 94 junior students from two classes of Primary Science Education Department in Fatih Faculty of Education at Karadeniz Technical University. T...

The aim of this study is to investigate the effectiveness of analogy technique on students’ achievement for effect of concentration and temperature on reaction speed. Quasi-experimental research design was used. This study was carried out in academic year of 2008–2009 at Faculty of Education, Giresun University, Turkey. The sample consisted of 116...

The chemistry program for 9th grade put into action in 2007. However the applicability of this renewed program necessitates pre-service and in-service training of teachers. For that purpose, it is planned that an effective IST (In service training) program should be developed and applied on teachers to effectively implement The New Chemistry Progra...

The aim of this study is to investigate students’ understanding of solubility, dissolution and effect of substance type on solubility. The sample is composed of 77 first year prospective science and technology student teachers in Fatih Faculty of Education at KTU, in 2008–2009 academic year. Data were collected by a worksheet prepared according to...

Students have some misunderstandings in their minds as a result of their experiences acquired before they come to the learning media and during learning process. Such misunderstandings in students’ minds obstruct performance of an effective concept teaching. Teachers, who are aware of such misunderstandings in students’ minds, can plan teaching by...

The aim of the study is to determine teachers' views about science and technology course teacher guide textbooks' usefulness, content, suitability with the curriculum. Semi-constructed interviews and unconstructed observations as data gathering instrument are used. Gathered data were coded. The samples of study are six primary school teachers who a...

Since chemical bonding subject generally covers abstract concepts, it is one of the difficult subjects for students to understand. Therefore, most students have misconceptions about chemical bonding and its types. The aim of this study is to investigate eleventh grade students’ understanding about covalent bonding and to determine their related mis...

This paper reports on an investigation of the effectiveness an intervention using several different methods for teaching solution chemistry. The teaching strategy comprised a four-step approach derived from a constructivist view of learning. A sample consisting of 44 students (18 boys and 26 girls) was selected purposively from two different Grade...

We constructed the PDEODE (Predict-Discuss-Explain-Observe-Discuss-Explain) teaching strategy, a variant of the classical POE (Predict-Observe-Explain) activity, to promote conceptual change, and investigated its effectiveness on student understanding of the evaporation concept. The sample consisted of 52 first year students in a primary science ed...

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This study examines the effectiveness of handbook preparation as a method in the self-directed learning process of student teachers in teaching endocrine glands, and increasing their levels of knowledge. Thirty student teachers were selected from a biology department. A pencil and paper test and a clinical interview procedure were used to collect d...

The purpose of this study is to compare the techniques and methodologies preferred by chemistry teachers during the teaching of the ionic compounds and to determine why they prefer these techniques and methodologies. An interview technique is used in this study. The interview questions, which are examined by an expert, were used as the data collect...

The aim of this study is to evaluate the implementation of compound unit by chemistry teachers at 9th grade in the chemistry curriculum; which was started to be implemented in the present academic year (2008-2009). The study was carried out with 14 chemistry teachers in different schools, who are active in teaching secondary education 9th grade che...

The aim of this study is to investigate science teachers’ ideas about the science process skills (SPS) using qualitative analysis. This study was carried out at the first term of 2008- 2009 academic year. A case study research methodology was used. The sample of this study consisted of 10 science teachers (ST), who has been working at Giresun cente...

The study aims to demonstrate evidence of (a) students’ conceptual change on solution rates; (b) students’ sub‐microscopic explanations of dissolution; and (c) retention of the concepts of solution rates. The sample consists of 44 Grade 9 students (18 boys and 26 girls) drawn purposively from two different classes (22 each) in the city of Trabzon,...

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 conc...

This study was conducted to determine preservice chemistry teachers’ ability to use teaching technologies with cooperative learning. A case study methodology was used. To collect the data, an unstandartized survey, observation notes and teacher candidates’ teaching material folders prepared during Chemistry Teaching Method II were used. The sample...

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 b...

The current study aims to compare analogies embedded within worksheets-designed in regard to a four-step constructivist teaching model-with traditional instruction. A quasi-experimental research methodology was conducted here. Within this context, while one class was assigned to an experimental group (N=20), the other was devoted to a control one (...

In this article we investigated 4th, 6th, and 8th grade students’ misconceptions about light, sight, vision, source of light and examined students’ conceptual development of these concepts at different grade levels.Data collection was done using five two-tiered test questions with one open-ended question, an interview about concepts and a drawing e...

In-service education is a training process that is an advantage for teachers' professional development. In this study, a teacher training course was developed for chemistry teachers to be able to learn some comtemporary concept teaching and learning methods, and implemented in Trabzon. 25 chemistry teachers attended this course. A case study resear...

The objective of this study was to construct a teaching strategy for facilitating students’ conceptual understanding of the boiling concept. The study is based on 52 freshman students in the primary science education department. Students’ ideas were elicited by a test consisting of nine questions. Conceptual change strategy was designed based on st...

Bu çalışma, danışmanların ve lisansüstü öğrencilerin karşılıklı olarak beklentilerini ortaya koymak, karşılaşılan problemleri belirlemek ve bu problemlere çözüm önerileri getirmek amacıyla yapılmıştır. Çalışmada özel durum metodolojisi kullanılmıştır. Araştırmada iki farklı yarı yapılandırılmış mülakat formu geliştirilerek altı öğretim üyesi ve bu...

Bu çalışmanın amacı 7. sınıf öğrencilerinin çözünme ve erime kavramlarıyla ilgili kavram yanılgılarını belirlemek ve bütünleştirici öğrenme teorisinin 5E modeline uygun bir şekilde hazırlanan bir etkinlikle bu yanılgıları gidermektir. Özel durum metodolojisi kapsamında çalışma, 2006–2007 eğitim-öğretim yılı güz döneminde Trabzon ilinde bir ilköğret...

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 ev...

The aim of this study is to determine students’ misconceptions about boiling concept and possible reasons of them. In order to achieve this aim, firstly it was examined national and international studies about boiling concept by which students’ misconceptions were determined. Afterwards, it was prepared a document in which these misconceptions were...

The aim of this study is to investigate conceptions of students at different grade about conservation of mass in dissolution process and to explore the relationship between the age and understanding level. To collect data a test was designed with 18 open-ended questions. Three questions in the test covered conservation of mass on dissolution proces...

The study revealed students' conceptions about mixtures and chemical compounds and also investigated the effects of a hands-on activity designed to improve their understanding of differences between two concepts. The sample consists of 52 seventh grade students in a primary school. Students' ideas were elicited by a test consisting of six open-ende...

The present paper presents a detailed thematic review of chemical bonding studies. To achieve this, a matrix is developed to summarize and present the findings by focusing on insights derived from the related studies. The matrix incorporates the following themes: needs, aims, methods of exploring students' conceptions, general knowledge claims, stu...

The study was carried out with 175 Turkish students by using drawings at different ages understanding of gene, DNA and chromosome concepts. Students from 8th, 9th, 11th grades and, science and biology student teachers were simply asked to draw the structure of gene, DNA and chromosome in a cell and also to give explanations about these three concep...

Active learning is advocated as a better way of teaching for several decades in science education. The purpose of this study was to determine chemistry teachers’ thinking and views about student-centered activities applicable in chemistry teaching and learning in the study context. A case study approach was used in this research. At the beginning,...

In this article we present details of a four-step constructivist-based teaching strategy, which helps students understand the dissolution of a gas in a liquid. The model derived from Ayas (1995) involves elicitation of pre-existing ideas, focusing on the target concept, challenging students’ ideas, and applying newly constructed ideas to similar bu...

The aim of this study is to investigate and compare level of understanding of eighth-grade students and student teachers in their final year in the science education department related to concepts of solution, gas, and chemical change. A qualitative and quantitative methodology was used for this investigation. Open-ended questions and group discuss...

This study explores secondary school students' understanding of evaporation and investigates whether students associate the concept of evaporation with only water as a liquid. An open-ended written test was developed using three different words (water, liquid or alcohol) to state the question phrases. The test was implemented on a sample of 313 stu...

This study has reviewed the last two decades of student conception research in solution chemistry pertaining to aims, methods of exploring students conception, general knowledge claims, students conceptions and difficulties, and conceptual change studies. The aims of solution chemistry studies have been to assess students understanding level of sol...

The aims of this study were considered under three headings. The first was to elicit misconceptions that students had about the terms 'solute', 'solvent' and 'solution.' The second was to understand how students' prior learning affected their misconceptions. The third was to determine if students were able to make a connection between their own kno...

The purpose of this study was to investigate the effects on students‘ achievement and misconceptions of new teaching material developed for the unit ‘acids and bases”. Also, the students‘ attitudes towards chemistry were explored. The new material included worksheets based on the conceptual conflict strategy. The sample consisted of eighty-eight st...