MIDDLE SCHOOL MATHEMATICS TEACHERS’ PROBLEMS IN TEACHING TRANSFORMATIONAL GEOMETRY AND THEIR SUGGESSTIONS FOR THE SOLUTION OF THESE PROBLEMS A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF SOCIAL SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY SERAP İLASLAN IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN THE DEPARTMENT OF ELEMENTARY SCIENCE AND MATHEMATICS EDUCATION FEBRUARY 2013 Approval of the Graduate School of Social Sciences Prof. Dr. Meliha ALTUNIŞIK Director I certify that this thesis satisfies all the requirements as a thesis for the degree of Master of Science. Prof. Dr. Jale ÇAKIROĞLU Head of Department This is to certify that we have read this thesis and that in our opinion it is fully adequate, in scope and quality, as a thesis for the degree of Master of Science. Prof. Dr. Safure BULUT Assoc. Prof. Dr. Erdinç ÇAKIROĞLU Co-Supervisor Supervisor Examining Committee Members Assoc. Prof. Dr. Mine IŞIKSAL BOSTAN (METU, ELE) Assoc. Prof. Dr. Erdinç ÇAKIROĞLU (METU, ELE) Prof. Dr. Safure BULUT (METU, SSME) Assist. Prof. Dr. Çiğdem HASER (METU, ELE) Assist. Prof. Dr. Didem AKYÜZ (METU, ELE) I hereby declare that all information in this document has been obtained and presented in accordance with academic rules and ethical conduct. I also declare that, as required by these rules and conduct, I have fully cited and referenced all material and results that are not original to this work. Name, Last name: Serap İLASLAN Signature: iii ABSTRACT MIDDLE SCHOOL MATHEMATICS TEACHERS’ PROBLEMS IN TEACHING TRANSFORMATIONAL GEOMETRY AND THEIR SUGGESTIONS FOR THE SOLUTIONS OF THESE PROBLEMS İlaslan, Serap M.S., Department of Elementary Science and Mathematics Education Supervisor: Assoc. Prof. Dr. Erdinç ÇAKIROĞLU Co-Supervisor: Prof. Dr. Safure BULUT February 2013, 90 pages The purpose of this study was to reveal and define the problems middle school mathematics teachers experienced in applying transformational geometry and the solutions they proposed to overcome these problems. A total of six elementary mathematics teachers (grades 5-8) in Ankara participated in the study. The data were collected by means of one-to-one interviews with the participants. The findings indicated that the participants’ problems divided into three parts. These problems were problems arising from teachers, problems arising from students and problems arising from resources. The participants expressed challenges in teaching due to lack of materials, textbooks, and visualization ability of teachers, classroom size, and time. According to the findings, rotation was the most problematic issue. The participants claimed insufficient technological materials were the reason of this problem. Participants did not feel confidence enough to implement transformational geometry especially in rotation since they lacked adequate training and support. The participants claimed that the Ministry’s support should be increased, concrete and iv technological materials should be sufficient in number, and the duration of transformational geometry lesson should be increased. Keywords: Middle School Mathematics Teachers’ Problems, Transformational Geometry, Teachers’ Solutions v ÖZ ORTAOKUL MATEMATİK ÖĞRETMENLERİNİN DÖNÜŞÜM GEOMETRİSİ ÖĞRETİMİNDE YAŞADIKLARI PROBLEMLER VE BU SORUNLARIN ÇÖZÜMÜ İÇİN ÖNERİLERİ İlaslan, Serap Yüksek Lisans, İlkögretim Fen ve Matematik Alanları Egitimi Bölümü Tez Yöneticisi: Doc.Dr. Erdinç ÇAKIROĞLU Ortak Tez Yöneticisi: Prof. Dr. Safure BULUT Şubat 2013, 90 sayfa Bu araştırmanın amacı, dönüşüm geometrisinin uygulanması sırasında orta okul matematik öğretmenlerinin yaşadığı problemleri ve bu problemleri çözme yollarını belirlemek ve betimlemektir. Ankara ilinde görev yapmakta olan toplam 6 ortaokul matematik öğretmeni çalışmaya katılmışlardır. Bu çalışmanın verileri katılımcılarla birebir görüşme yoluyla toplanmıştır. Bulgular katılımcı ögretmenlerin problemlerinin üçe ayrıldığını göstermiştir. Bu problemler öğretmenden kaynaklanan sorunlar, öğrenciden kaynaklanan sorunlar ve kullanılan kaynaklardan oluşan sorunlar. Katılımcılar materyal eksikliği (özellikle teknolojik materyaller), ders kitabı yetersizligi, görselleştirme yetenegi eksikliği, fiziksel mekânların yetersizliği ve zaman yetersizliği sebebiyle öğretim sırasında zorlandıklarını ifade etmişlerdir. Araştırmanın bulgularına göre en çok sorun yaşanan konu dönme konusudur. Bu sorunun sebebinin sınıflardaki teknoloji eksikliği olduğunu ifade etmişlerdir. Ögretmenler dönüşüm geometrisinin uygulanması ile ilgili uygun eğitim ve destegi almadıkları için kendilerini dönüşüm geometrisini vi uygulama konusunda yeterli hissetmemişlerdir. Katılımcılar Bakanlığın desteğinin arttırılmasını, geometri materyallerinin yeterli sayıda olmasını, okullardaki fiziksel şartların iyileştirilmesini ve dönüşüm geometrisi ders saati sayısının arttırılmasını önermişlerdir. Anahtar Kelimeler: Ortaokul Matematik Öğretmenlerinin Sorunları, Dönüşüm Geometrisi, Öğretmen Çözümleri vii To My Family viii ACKNOWLEDGMENTS I would like to take this opportunity to thank several people who have provided their help and encouragement throughout this study. First, I want to thank my thesis supervisors Assoc. Prof. Dr. Erdinç ÇAKIROĞLU and Prof. Dr. Safure BULUT for their wisdom, guidance, and belief in me. They always challenged me to do my best, and encouraged me in every step of my thesis. Thanks for their great efforts. I am also thankful to Seher AVCU and Marriam KASSIMALİ for their help, support, encouragement, suggestions and comments. Without your close friendship, inspiration, help, suggestions and support, this thesis would not have been written. Thanks for being such good friend. I am forever grateful to my mother, Sabiha İLASLAN, my father, İsrafil İLASLAN and my brothers Recep İLASLAN and İsmail İLASLAN for their support throughout my life. I would also like to express my sincere gratitude to the teachers who participated to the study. Thank you all very much. ix TABLE OF CONTENTS PLAGIARISM..............................................................................................................iii ABSTRACT.................................................................................................................iv ÖZ.................................................................................................................................vi DEDICATION............................................................................................................viii ACKNOWLEDGMENTS............................................................................................ix TABLE OF CONTENTS...............................................................................................x LIST OF TABLES.....................................................................................................xiii LIST OF ABBREVIATIONS.....................................................................................xiv CHAPTER 1. INTRODUCTION.................................................................................................1 1.1 Research Questions......................................................................................3 1.2 Significance of the Study.............................................................................3 1.3 My Motivation for the Study.......................................................................5 1.4 The definitions of Important Terms.............................................................5 2. LITERATURE REVIEW....................................................................................7 2.1 Geometry Education....................................................................................7 2.2 Transformational Geometry.........................................................................9 2.3 Transformational Geometry in the Turkish Middle School Curriculum...11 2.4 Importance of Teacher Knowledge………………....................................14 2.5. Research Studies Related to Transformational Geometry........................15 2.6. Research Studies Related to the 2005 Curriculum in Turkey……….......20 2.7. Research Studies Related to Mathematics Teachers’ Knowledge and Their Qualifications……………………………….…..……………………..22 x