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            <front>

                <journal-meta>
                                                                <journal-id>nef-efmed</journal-id>
            <journal-title-group>
                                                                                    <journal-title>Necatibey Faculty of Education Electronic Journal of Science and Mathematics Education</journal-title>
            </journal-title-group>
                                        <issn pub-type="epub">1307-6086</issn>
                                                                                            <publisher>
                    <publisher-name>Balıkesir Üniversitesi</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.12973/nefmed158</article-id>
                                                                                                                                                                                            <title-group>
                                                                                                                                                            <article-title>Matematik Öğretmeni Adaylarının Sonsuzluk, Belirsizlik ve Tanımsızlık Kavramlarına İlişkin Anlamaları</article-title>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                <name>
                                    <surname>Çelik</surname>
                                    <given-names>Derya</given-names>
                                </name>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                <name>
                                    <surname>Akşan</surname>
                                    <given-names>Elif</given-names>
                                </name>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20130601">
                    <day>06</day>
                    <month>01</month>
                    <year>2013</year>
                </pub-date>
                                        <volume>7</volume>
                                        <issue>1</issue>
                                        <fpage>166</fpage>
                                        <lpage>190</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20150102">
                        <day>01</day>
                        <month>02</month>
                        <year>2015</year>
                    </date>
                                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2015, Necatibey Eğitim Fakültesi Elektronik Fen ve Matematik Eğitimi Dergisi</copyright-statement>
                    <copyright-year>2015</copyright-year>
                    <copyright-holder>Necatibey Eğitim Fakültesi Elektronik Fen ve Matematik Eğitimi Dergisi</copyright-holder>
                </permissions>
            
                                                                                                <trans-abstract xml:lang="en">
                            <p>– The aim of this study is to reveal the perceptions of preservice mathematics teachers on the concepts of infinity, indeterminate and undefined. The study was conducted with 83 teacher candidates attending to Primary School Mathematics Education at a state-owned university. A two-part test was applied to preservice teachers. In the first part of the test, three questions were directly posed to preservice teachers to clarify what they understand the concepts of infinity, indeterminate, and undefined. In the second part of the test, nine cases representing infinity, indeterminate and undefined (∞+∞, 1∞ and 1/0 etc.) were given to the teacher candidates and they were asked to explain what these symbolic representations mean to them. Based on the data obtained from the test, the candidate teachers (23%) has been more successful in explaining the concept of indeterminate. Except for the concept of undefined, their daily life experiences were seem to be effective to their explanations about the other two concepts. It was also determined that preservice teachers substitute these three concepts to each other. Besides, the study concluded that previously learned some dominant rules were quite effective to teacher’ candidates&#039; decisions of the about given symbolical cases</p></trans-abstract>
                                                                                                                                    <abstract><p>Bu araştırmanın amacı, matematik öğretmeni adaylarının sonsuzluk, belirsizlik ve tanımsızlık kavramları ile ilgili anlamalarını ortaya koymaktır. Araştırma bir devlet üniversitesinin İlköğretim Matematik Öğretmenliği programına devam eden 83 öğretmen adayıyla yürütülmüştür. Öğretmen adaylarına iki bölümden oluşan bir test uygulanmıştır. Testin birinci bölümünde öğretmen adaylarına doğrudan bu kavramlardan ne anladıkları yönelik üç soru yöneltilmiştir. İkinci bölümünde ise sonsuzluk, belirsizlik ve tanımsızlığı sembolik olarak temsil eden dokuz durum (∞+∞,1∞, ∞-∞,…) verilmiş ve öğretmen adaylarından bu sembolik gösterimlerin/formların kendileri için ne anlam ifade ettiğini nedenleri ile birlikte açıklamaları istenmiştir. Elde edilen sonuçlara göre öğretmen adayları en fazla belirsiz kavramını açıklamada başarılı (%23) olmuştur. Tanımsızlık kavramı dışında, diğer iki kavramla ilgili açıklamalarında günlük yaşam deneyimlerinin etkili olduğu ortaya çıkmıştır. Ayrıca öğretmen adaylarının sonsuzluk, belirsizlik ve tanımsızlık kavramlarını birbirinin yerine kullandıkları belirlenmiştir. Diğer taraftan öğretmen adaylarının verilen sembolik duruma ilişkin kararlarında önceden öğrendikleri bazı baskın kuralların oldukça etkili olduğu ortaya çıkmıştır.</p></abstract>
                                                            
            
                                                                                        <kwd-group>
                                                    <kwd>Sonsuzluk</kwd>
                                                    <kwd>   Belirsizlik</kwd>
                                                    <kwd>   Tanımsızlık</kwd>
                                                    <kwd>   Matematik Öğretmeni Adayları</kwd>
                                            </kwd-group>
                            
                                                <kwd-group xml:lang="en">
                                                    <kwd>Infinity</kwd>
                                                    <kwd>   Indeterminate</kwd>
                                                    <kwd>   Undefined</kwd>
                                                    <kwd>   Preservice mathematics teachers DOI No: http://dx.doi.org/10.12973/nefmed158 Summary</kwd>
                                            </kwd-group>
                                                                                                                                        </article-meta>
    </front>
    <back>
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