<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.4 20241031//EN"
        "https://jats.nlm.nih.gov/publishing/1.4/JATS-journalpublishing1-4.dtd">
<article  article-type="research-article"        dtd-version="1.4">
            <front>

                <journal-meta>
                                                                <journal-id>meujfe</journal-id>
            <journal-title-group>
                                                                                    <journal-title>Mersin Üniversitesi Eğitim Fakültesi Dergisi</journal-title>
            </journal-title-group>
                                        <issn pub-type="epub">1306-7850</issn>
                                                                                            <publisher>
                    <publisher-name>Mersin University</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.17860/mersinefd.1644006</article-id>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Mathematics Education</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>Matematik Eğitimi</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                        <article-title>Ortaokul Beşinci Sınıf Öğrencilerinin Ölçümsel ve Yığın Tahmin Becerilerinin Belirlenmesi ve Geliştirilmesine Yönelik Müdahale Çalışması</article-title>
                                                                                                                                                                                                <trans-title-group xml:lang="en">
                                    <trans-title>Intervention Study for the Determination and Development of Measurement and Quantity Estimation Skills of Secondary School Fifth Grade Students</trans-title>
                                </trans-title-group>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0002-7011-9870</contrib-id>
                                                                <name>
                                    <surname>Şahin</surname>
                                    <given-names>Handenur</given-names>
                                </name>
                                                                    <aff>Sakarya Üniversitesi</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0001-5119-2813</contrib-id>
                                                                <name>
                                    <surname>Ergene</surname>
                                    <given-names>Özkan</given-names>
                                </name>
                                                                    <aff>SAKARYA ÜNİVERSİTESİ, EĞİTİM FAKÜLTESİ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20260428">
                    <day>04</day>
                    <month>28</month>
                    <year>2026</year>
                </pub-date>
                                        <volume>22</volume>
                                        <issue>1</issue>
                                        <fpage>1</fpage>
                                        <lpage>21</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20250220">
                        <day>02</day>
                        <month>20</month>
                        <year>2025</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20260202">
                        <day>02</day>
                        <month>02</month>
                        <year>2026</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 2005, Mersin University Journal of the Faculty of  Education</copyright-statement>
                    <copyright-year>2005</copyright-year>
                    <copyright-holder>Mersin University Journal of the Faculty of  Education</copyright-holder>
                </permissions>
            
                                                                                                <abstract><p>Gündelik yaşamda ve matematik derslerinde tahmin bir beceri olarak tanımlanmaktadır. Bu araştırmada, ortaokul beşinci sınıf öğrencilerinin ölçümsel ve yığın tahmin becerilerinin belirlenmesi ve bu becerilerin geliştirilmesine yönelik müdahale çalışması yapılması amaçlanmıştır. Araştırmanın katılımcılarını kolay ulaşılabilir örnekleme yöntemiyle belirlenmiş 40 ortaokul beşinci sınıf öğrencisi oluşturmaktadır. Nitel araştırma yöntemi ile yürütülen araştırmanın verileri tahmin testleri, etkinliklere verilen öğrenci cevapları ve yarı yapılandırılmış görüşmelerle toplanmıştır. Araştırmanın verileri içerik ve betimsel analiz yöntemleri ile analiz edilmiştir. Araştırma bulguları, müdahale çalışması sonrası öğrencilerin tahmin performanslarında anlamlı bir artış olduğunu ortaya koymuştur. Bununla birlikte araştırmada, öğrencilerin ölçümsel ve yığın tahmin performanslarının müdahale çalışmasının etkisiyle arttığı tespit edilmiştir. Öğrenciler müdahale çalışmasından önce çoğunlukla rastgele ve gözünde canlandırma tahmin etme stratejilerini kullanırken müdahale çalışmasının etkisiyle parçalama, karşılaştırma gibi farklı tahmin etme stratejilerini kullandıkları belirlenmiştir. Ayrıca görüşmelerde, öğrenciler tahmin testlerindeki soru çözümlerinde strateji değişimlerinin sebebinin müdahale çalışması olduğunu ifade etmişlerdir. Bu doğrultuda, tahmin becerilerinin gelişimini desteklemek için öğretim süreçlerine daha fazla tahmin etkinliği entegre edilmesi ve öğrencilere farklı tahmin stratejilerini kullanma fırsatı sunan öğretim ortamlarının oluşturulması önerilmektedir.</p></abstract>
                                                                                                                                    <trans-abstract xml:lang="en">
                            <p>Estimation is recognized as a key skill in both everyday life and mathematics lessons. This study aimed to determine the measurement and quantity estimation skills of fifth-grade students and to conduct an intervention study to improve these skills. The participants of the study consisted of 40 fifth-grade secondary school students selected using the easily accessible sampling method. The data for this qualitative research were collected through estimation tests, student responses to activities, and semi-structured interviews. The data were analyzed using content and descriptive analysis methods. The findings revealed a significant improvement in students&#039; estimation performance after the intervention study. Moreover, the study determined that students&#039; measurement and quantity estimation performances increased due to the intervention. Before the intervention, students mostly relied on random guessing and mental imagery strategies, whereas after the intervention, they adopted more structured strategies such as fragmentation and comparison. Additionally, students stated in the interviews that the intervention study played a key role in the changes they made in their estimation strategies between the pre-test and post-test. In this context, it is recommended that more estimation activities be integrated into instructional processes and that teaching materials be developed to allow students to practice different estimation strategies.</p></trans-abstract>
                                                            
            
                                                            <kwd-group>
                                                    <kwd>Ölçümsel tahmin</kwd>
                                                    <kwd>  tahmin etme stratejileri</kwd>
                                                    <kwd>  yığın tahmin</kwd>
                                            </kwd-group>
                                                        
                                                                            <kwd-group xml:lang="en">
                                                    <kwd>Estimation strategies</kwd>
                                                    <kwd>  measurement estimation</kwd>
                                                    <kwd>  quantity estimation</kwd>
                                            </kwd-group>
                                                                                                            </article-meta>
    </front>
    <back>
                            <ref-list>
                                    <ref id="ref1">
                        <label>1</label>
                        <mixed-citation publication-type="journal">Albarracín, L., &amp; Gorgorió, N. (2019). Using Large Number Estimation Problems İn Primary Education Classrooms To İntroduce Mathematical Modelling. International Journal of Innovation in Science and Mathematics Education, 27(2), 45–57. https://doi.org/10.30722/IJISME.27.02.004</mixed-citation>
                    </ref>
                                    <ref id="ref2">
                        <label>2</label>
                        <mixed-citation publication-type="journal">Andrews, P., Xenofontos, C., &amp; Sayers, J. (2022). Estimation İn The Primary Mathematics Curricula Of The United Kingdom: Ambivalent Expectations Of An Essential Competence. International Journal of Mathematical Education in Science and Technology, 53(8), 2199–2225. https://doi.org/10.1080/0020739X.2020.1868591</mixed-citation>
                    </ref>
                                    <ref id="ref3">
                        <label>3</label>
                        <mixed-citation publication-type="journal">Ardiale, E., &amp; Lemaire, P. (2013). Effects Of Execution Duration on within-İtem Strategy Switching in young and Older Adults. Journal of Cognitive Psychology, 25(4), 464–472. https://doi.org/10.1080/20445911.2013.789854</mixed-citation>
                    </ref>
                                    <ref id="ref4">
                        <label>4</label>
                        <mixed-citation publication-type="journal">Artut, P. D., &amp; Aslan, E. (2014). İlköğretim Matematik Dersi Öğretim Programında Yer Alan Tahmin Becerisinin Öğretmen Görüşleri Doğrultusunda Değerlendirilmesi. Çukurova Üniversitesi Sosyal Bilimler Enstitüsü Dergisi, 23(1), 239–250.</mixed-citation>
                    </ref>
                                    <ref id="ref5">
                        <label>5</label>
                        <mixed-citation publication-type="journal">Aytekin, C. &amp; Toluk Uçar, Z. (2014). Ortaokul Öğrencilerinin Kesirlerde Tahmin Becerilerinin İncelenmesi. İlköğretim Online, 13(2), 546–563.</mixed-citation>
                    </ref>
                                    <ref id="ref6">
                        <label>6</label>
                        <mixed-citation publication-type="journal">Ayyıldız, N. (2014). İlkokul öğrencilerinin sayı doğrusunda tahmin becerilerinin çeşitli değişkenler açısından karşılaştırılması (Tez No. 366565) [Yüksek lisans tezi, Ankara Üniversitesi, Ankara]. Yükseköğretim Kurulu Tez Merkezi.</mixed-citation>
                    </ref>
                                    <ref id="ref7">
                        <label>7</label>
                        <mixed-citation publication-type="journal">Ayvalı, İ. (2013). Gerçekçi matematik eğitimi yaklaşımıyla yapılan öğretimin hesapsal tahmin başarısına ve strateji kullanımına etkisi (Tez No. 349971) [Yüksek lisans tezi, Marmara Üniversitesi, İstanbul]. Yükseköğretim Kurulu Tez Merkezi.</mixed-citation>
                    </ref>
                                    <ref id="ref8">
                        <label>8</label>
                        <mixed-citation publication-type="journal">Baroody, A. J.,&amp; Gatzke, M. R. (1991). The Estimation of Set Size by Potentially Gifted Kindergarten-Age Children. Journal for Research in Mathematics Education, 22(1), 59–68. https://doi.org/10.5951/jresematheduc.22.1.0059</mixed-citation>
                    </ref>
                                    <ref id="ref9">
                        <label>9</label>
                        <mixed-citation publication-type="journal">Bartelet, D., Vaessen, A., Blomert, L., &amp; Ansari, D. (2014). What Basic Number Processing Measures in Kindergarten Explain Unique Variability in First-Grade Arithmetic Proficiency?. Journal of experimental child psychology, 117, 12–28.</mixed-citation>
                    </ref>
                                    <ref id="ref10">
                        <label>10</label>
                        <mixed-citation publication-type="journal">Barth,H., Starr, A.,&amp;Sullivan, J. (2009). Children’smappings Of Large Numberwords to Numerosities. Cognitive Development, 24(3), 248–264. https://doi.org/10.1016/j.cogdev.2009.04.001</mixed-citation>
                    </ref>
                                    <ref id="ref11">
                        <label>11</label>
                        <mixed-citation publication-type="journal">Boz-yaman, B., &amp; Bulut, S. (2017). Middle School Mathematics Teachers’ Opinions on Estimation. Necatibey Faculty of Education Electronic Journal of Science and Mathematics Education, 11(1), 48–80. https://doi.org/10.17522/balikesirnef.354985</mixed-citation>
                    </ref>
                                    <ref id="ref12">
                        <label>12</label>
                        <mixed-citation publication-type="journal">Bright, G. W. (1985). Estimation as part of learning to measure. In D. Nelson (Ed.), Measurement in school mathematics: 1976 yearbook of the National Council of Teachers of Mathematics (pp. 87–104). The Council.</mixed-citation>
                    </ref>
                                    <ref id="ref13">
                        <label>13</label>
                        <mixed-citation publication-type="journal">Bright, G. W. (1976). Estimation as Part of Learning to Measure. In D. Nelson &amp; R. E. Reys (Eds.), National Council of Teachers of Mathematics Yearbook (pp. 87–104). Reston, VA: NCTM.</mixed-citation>
                    </ref>
                                    <ref id="ref14">
                        <label>14</label>
                        <mixed-citation publication-type="journal">Brumm L &amp; Rathgeb-Schnierer E. (2023). The Relationship Between Accuracy in Numerosity Estimation, Math Achievement, And Math İnterest in Primary School Students. Front. Psychol. https://doi.org/10.3389/fpsyg.2023.1146458</mixed-citation>
                    </ref>
                                    <ref id="ref15">
                        <label>15</label>
                        <mixed-citation publication-type="journal">Budak, E. B., &amp; Şengül, S. (2021). Senaryolaştırılmış Kavram Karikatürlerinin 5. Ve 6. Sınıf Öğrencilerinin Ölçüsel Tahmin Becerilerine Ve Strateji Tercihlerine Etkisinin İncelenmesi. Asya Studies, 5(17), 49–75. https://doi.org/10.31455/asya.890670</mixed-citation>
                    </ref>
                                    <ref id="ref16">
                        <label>16</label>
                        <mixed-citation publication-type="journal">Bulut, A. S., &amp; Şener, Z. T. (2017). İlkokul öğrencilerinin alan ölçme konusundaki tahmin performanslarının belirlenmesi. In International Congress on Politic, Economic and Social Studies 3 (pp. 12–19). Ankara Yıldırım Beyazıt Üniversitesi.</mixed-citation>
                    </ref>
                                    <ref id="ref17">
                        <label>17</label>
                        <mixed-citation publication-type="journal">Bulut, S., Yavuz, F. D., &amp; Yaman, B. (2017). Tahmin Becerilerinin 1948’den 2015’e 1-5. Sınıflar Matematik Dersi Öğretim Programlarındaki Yeri. Ahi Evran Üniversitesi Kırşehir Eğitim Fakültesi Dergisi, 18(1), 19–39.</mixed-citation>
                    </ref>
                                    <ref id="ref18">
                        <label>18</label>
                        <mixed-citation publication-type="journal">Castillo, I., Lévy-Leduc, C., &amp; Matias, C. (2006). Exact Adaptive Estimation of the Shape of A Periodic Function with Unknown Period Corrupted by White Noise. Mathematical methods of statistics, 15(2), 146–175.</mixed-citation>
                    </ref>
                                    <ref id="ref19">
                        <label>19</label>
                        <mixed-citation publication-type="journal">Creswell, J. W., Hanson, W. E., Clark Plano, V. L., &amp; Morales, A. (2007). Qualitative research designs: Selection and implementation. The counseling psychologist, 35(2), 236–264.</mixed-citation>
                    </ref>
                                    <ref id="ref20">
                        <label>20</label>
                        <mixed-citation publication-type="journal">Crites, T. (1992). Skilled and Less Skilled Estimators’ Strategies for Estimating Discrete Quantities. The Elementary School Journal, 92(5), 601–619. https://doi.org/10.1086/461709</mixed-citation>
                    </ref>
                                    <ref id="ref21">
                        <label>21</label>
                        <mixed-citation publication-type="journal">Çilingir, D. &amp; Türnüklü, E. B. (2009). Estimation Ability and Strategies of the 6-8 the Grades Elementary School Students. Elementary Education Online, 8(3), 637–650.</mixed-citation>
                    </ref>
                                    <ref id="ref22">
                        <label>22</label>
                        <mixed-citation publication-type="journal">Desli,D., &amp; Giakoumi, M. (2017). Children’s Length Estimation Performance and Strategies in Standard and Non-Standard Units Of Measurement. International Journal for Research in Mathematics Education, 7(3), 61–84. http://sbem.iuri0094.hospedagemdesites.ws/revista/index.php/ripem/</mixed-citation>
                    </ref>
                                    <ref id="ref23">
                        <label>23</label>
                        <mixed-citation publication-type="journal">Er, Z. (2022). 7. sınıf öğrencilerinin ölçüsel tahmin becerilerinin geliştirilmesinde Fermi problemlerine dayalı öğretim uygulanması: Eylem araştırması (Tez No. 728500) [Doktora tezi, Ankara Üniversitesi, Ankara]. Yükseköğretim Kurulu Tez Merkezi.</mixed-citation>
                    </ref>
                                    <ref id="ref24">
                        <label>24</label>
                        <mixed-citation publication-type="journal">Forrester, M. A., &amp; Pike, C. D. (1998). Learning to Estimate in the Mathematics Classroom:A Conversation-Analytic Approach. Journal for Research in Mathematics Education, 29(3), 334–356. https://doi.org/10.2307/749793
Forrester, Michael A.(1990). Exploring estimation in young children. Educational Psychology, 4(10).</mixed-citation>
                    </ref>
                                    <ref id="ref25">
                        <label>25</label>
                        <mixed-citation publication-type="journal">Gooya, Z., Khosroshahi, L. G., &amp; Teppo, A. R. (2011). Iranian Students’ Measurement Estimation Performance İnvolving Linear and Area Attributes of Real-World Objects. ZDM, 43(5), 709–722. https://doi.org/ 10.1007/s11858-011-0338-1</mixed-citation>
                    </ref>
                                    <ref id="ref26">
                        <label>26</label>
                        <mixed-citation publication-type="journal">Hanson, S.A., &amp; Hogan P.T., (2000). Computational Estimation Skill of College Students. Journal for Research in Mathematics Education, 31(4), 483.</mixed-citation>
                    </ref>
                                    <ref id="ref27">
                        <label>27</label>
                        <mixed-citation publication-type="journal">Hildreth, D. J. (1983). The Use of Strategies in Estimating Measurements. The Arithmetic Teacher, 30(5), 50–54.
Hogan, Thomas P. &amp; Brezinski, Kristen L. (2003). Quantitative Estimation: One, two, or three abilities?. Mathematical Thinking and Learning, 5(4), 259–280.</mixed-citation>
                    </ref>
                                    <ref id="ref28">
                        <label>28</label>
                        <mixed-citation publication-type="journal">Huang, H. M. E. (2014). Investigating Children&#039;s Ability to Solve Measurement Estimation Problems. North American Chapter of the International Group for the Psychology of Mathematics Education.</mixed-citation>
                    </ref>
                                    <ref id="ref29">
                        <label>29</label>
                        <mixed-citation publication-type="journal">Jones, M. G., &amp; Taylor, A. R. (2009). Developing A Sense Of Scale: Looking Backward. Journal of Research in Science Teaching: The Official Journal of the National Association for Research in Science Teaching, 46(4), 460–475.</mixed-citation>
                    </ref>
                                    <ref id="ref30">
                        <label>30</label>
                        <mixed-citation publication-type="journal">Jones, M. G., Gardner, G. E., Taylor, A. R., Forrester, J. H., &amp; Andre, T. (2012). Students&#039; Accuracy of Measurement Estimation: Context, Units, and Logical Thinking. School Science and Mathematics, 112(3), 171–178. https://doi.org/10.1111/j.1949-8594.2011.00130.x</mixed-citation>
                    </ref>
                                    <ref id="ref31">
                        <label>31</label>
                        <mixed-citation publication-type="journal">Joram, E. (2003). Benchmarks as Tools for Developing Measurement Sense. In D. H. Clements &amp; G. Bright (Eds.), Learning and teaching measurement: 2003 yearbook (pp. 57–67). Reston, VA: National Council of Teachers of Mathematics.</mixed-citation>
                    </ref>
                                    <ref id="ref32">
                        <label>32</label>
                        <mixed-citation publication-type="journal">Joram, E., Gabriele, A. J., Bertheau, M., Gelman, R. &amp; Subrahmanyam, K. (2005). Children&#039;s Use of the Refrence Point Strategy for Measurement Estimation. Journal  for Research in Mathematics Education, 36 (1), 4–23.</mixed-citation>
                    </ref>
                                    <ref id="ref33">
                        <label>33</label>
                        <mixed-citation publication-type="journal">Kılıç, Ç., &amp; Olkun, S. (2013). İlköğretim Öğrencilerinin Gerçek Yaşam Durumlarındaki Ölçüsel Tahmin Performansları Ve Kullandıkları Stratejiler. İlköğretim Online, 12(1), 295–307.</mixed-citation>
                    </ref>
                                    <ref id="ref34">
                        <label>34</label>
                        <mixed-citation publication-type="journal">Kösece, P., &amp; Doğanay, A. (2021). Gerçekçi Matematik Eğitimi Yoluyla Tahmin Becerisinin Geliştirilmesine Yönelik Bir Eylem Araştırması. Turkish Studies-Educational Sciences, 16(2). http://dx.doi.org/10.47423/TurkishStudies.49135</mixed-citation>
                    </ref>
                                    <ref id="ref35">
                        <label>35</label>
                        <mixed-citation publication-type="journal">Kramer, P., Bressan, P., &amp; Grassi, M. (2018). The SNARC Effect is Associated with Worse Mathematical İntelligence and Poorer Time Estimation. Royal Society Open Science, 5(8), 172362–172362. https://doi.org/10.1098/rsos.172362</mixed-citation>
                    </ref>
                                    <ref id="ref36">
                        <label>36</label>
                        <mixed-citation publication-type="journal">Lang, F. K. (1999). What is A “Good Guess” Anyway? Teaching Quantity and Measurement Estimation. Young Children, 54(4), 78–81.</mixed-citation>
                    </ref>
                                    <ref id="ref37">
                        <label>37</label>
                        <mixed-citation publication-type="journal">Levin, J.A. (1981). Estimation Techniques for Arithmetic: Everyday Math and Mathematics Instruction. Education al Studies in Mathematics 12, 421–434. https://doi.org/10.1007/BF00308140</mixed-citation>
                    </ref>
                                    <ref id="ref38">
                        <label>38</label>
                        <mixed-citation publication-type="journal">Levine, D. R. (1982). Strategy Use and Estimation Ability of College Students. Journal for Research in Mathematics Education, 13(5), 350–359. doi:10.5951/jresematheduc.13.5.</mixed-citation>
                    </ref>
                                    <ref id="ref39">
                        <label>39</label>
                        <mixed-citation publication-type="journal">Lipovec, A., &amp; Ferme, J. (2017). The Use of the Reference Point Strategy for Measurement Estimation. Equity and diversity in elementary mathematics education, 311–318.</mixed-citation>
                    </ref>
                                    <ref id="ref40">
                        <label>40</label>
                        <mixed-citation publication-type="journal">Merriam, S. B. (2013). Nitel araştırma desen ve uygulama için bir rehber (3. bs.). (S.Turan, Çev.). Nobel Akademik Yayıncılık.</mixed-citation>
                    </ref>
                                    <ref id="ref41">
                        <label>41</label>
                        <mixed-citation publication-type="journal">Micklo, S. J. (1999). Estimation; Its More than A Guess. Childhood Education, 5(3), 142–145</mixed-citation>
                    </ref>
                                    <ref id="ref42">
                        <label>42</label>
                        <mixed-citation publication-type="journal">Milli Eğitim Bakanlığı (2024). Ortaokul matematik dersi öğretim programı Türkiye yüzyılı maarif modeli. https://tymm.meb.gov.tr/upload/program/2024programmat5678Onayli.pdf</mixed-citation>
                    </ref>
                                    <ref id="ref43">
                        <label>43</label>
                        <mixed-citation publication-type="journal">NCTM (2000). Principles and Standards for School Mathematics. Reston, Va: NCTM Publications.</mixed-citation>
                    </ref>
                                    <ref id="ref44">
                        <label>44</label>
                        <mixed-citation publication-type="journal">O’Daffer P. (1979). A Case and Techniques for Estimation: Estimation Experiences in Elementary School Mathematics-Essential, Not Extra! Arith Teach 26, 46–51</mixed-citation>
                    </ref>
                                    <ref id="ref45">
                        <label>45</label>
                        <mixed-citation publication-type="journal">Patton, M. Q. (1997). Utilization-Focused Evaluation. In International handbook of educational evaluation (pp. 223-242). Dordrecht: Springer Netherlands.</mixed-citation>
                    </ref>
                                    <ref id="ref46">
                        <label>46</label>
                        <mixed-citation publication-type="journal">Pizarro, N.; Gorgorió, N. &amp; Albarracín, L. (2015). Primary teachers&#039; Approach to Measurement Estimation Activities. https://www.researchgate.net/publication/272019867</mixed-citation>
                    </ref>
                                    <ref id="ref47">
                        <label>47</label>
                        <mixed-citation publication-type="journal">Reys, B. J. (1986). Teaching Computational Estimation: Concepts and Strategies. In H. L.Schoen ve M. J. Zweng (Eds.), Estimation and mental computation: 1986 yearbook (pp. 31–45). Reston, VA: National Council of Teachers of Mathematics.</mixed-citation>
                    </ref>
                                    <ref id="ref48">
                        <label>48</label>
                        <mixed-citation publication-type="journal">Roebyanto, G. (2018). Enhancing the calculating estimation skill of the students of grade vi in the primary school. In 1st International Conference on Early Childhood and Primary Education (ECPE 2018) (pp. 47–52). Atlantis Press.</mixed-citation>
                    </ref>
                                    <ref id="ref49">
                        <label>49</label>
                        <mixed-citation publication-type="journal">Sasanguie,D., Göbel, S.,Moll, K., Smets, K.,&amp;Reynvoet, B. (2013). Approximatenumber Sense, Symbolic Number Processing, or Number–Spacemappings:What Underliesmathematics Achievement? Journal of Experimental Child Psychology, 114(3), 418–431. https://doi.org/10.1016/j.jecp.2012.10.012</mixed-citation>
                    </ref>
                                    <ref id="ref50">
                        <label>50</label>
                        <mixed-citation publication-type="journal">Satan, N., &amp; Yetkin, İ. (2022). An analysis of the middle school students’ performance in the measurement estimation. Dokuz Eylül Üniversitesi Buca Eğitim Fakültesi Dergisi, 53, 700–724. https://doi.org/10.53444/deubefd.1038366</mixed-citation>
                    </ref>
                                    <ref id="ref51">
                        <label>51</label>
                        <mixed-citation publication-type="journal">Sayers, J., Petersson, R., Rosenqvist, E., &amp; Andrews, P. (2020). Estimation: An inadequately operationalised national curriculum competence. In R. Marks (Ed.), Proceedings of the British Society for Research into Learning Mathematics (1st ed., Vol. 40, Article 14). https://bsrlm.org.uk/wp-content/uploads/2020/05/BSRLM-CP-40-1-14.pdf</mixed-citation>
                    </ref>
                                    <ref id="ref52">
                        <label>52</label>
                        <mixed-citation publication-type="journal">Segovia, I. &amp; Castro, E. (2009). Computational and Measurement Estimation; Curriculum Foundations and Research Carried Out at the University of Granada. Electronic Journal of Research in and Educational Psychology, 17(7), 499–536.</mixed-citation>
                    </ref>
                                    <ref id="ref53">
                        <label>53</label>
                        <mixed-citation publication-type="journal">Siegel, A. W.; Goldsmith, L. T. &amp; Madson, C. R. (1982), Skill in Estimation Problems of Extent and Numerosity. Journal for Research in Mathematics Education, 0(13), 211–232.</mixed-citation>
                    </ref>
                                    <ref id="ref54">
                        <label>54</label>
                        <mixed-citation publication-type="journal">Siegler, R. S.&amp; Booth, J. L. (2005). Development of Numerical Estimation A Review. Edited Jamie I.D. Campbell. Handbook of Mathematical Cognition.</mixed-citation>
                    </ref>
                                    <ref id="ref55">
                        <label>55</label>
                        <mixed-citation publication-type="journal">Smets, K., Sasanguie, D., Szücs, D., &amp; Reynvoet, B. (2015). The Effect of Different Methods to Construct Non-Symbolic Stimuli in Numerosity Estimation and Comparison. Journal of Cognitive Psychology, 27(3), 310–325. https://doi.org/10.1080/20445911.2014.996568</mixed-citation>
                    </ref>
                                    <ref id="ref56">
                        <label>56</label>
                        <mixed-citation publication-type="journal">Sowder, J. ( 1992). Estimation and number sense. In D, A, Grouws (Ed.), Handbook of Research on Mathematics teaching and Learning, (ss. 371–389), New York: Macmillan.</mixed-citation>
                    </ref>
                                    <ref id="ref57">
                        <label>57</label>
                        <mixed-citation publication-type="journal">Taylor, P. M.; Simms, K., Kim, O. &amp; Reys, R. E. (2001). Do Your Students Measure Up? Teaching Children Mathematics, 7(4), 282–287.</mixed-citation>
                    </ref>
                                    <ref id="ref58">
                        <label>58</label>
                        <mixed-citation publication-type="journal">Tekinkır, D. (2008). İlköğretim 8. sınıf öğrencilerinin matematik alanındaki tahmin stratejilerini belirleme ve tahmin becerisi ile matematik başarısı arasındaki ilişki (Tez No. 215761) [Yüksek lisans tezi, Dokuz Eylül Üniversitesi, İzmir]. Yükseköğretim Kurulu Tez Merkezi.</mixed-citation>
                    </ref>
                                    <ref id="ref59">
                        <label>59</label>
                        <mixed-citation publication-type="journal">Thompson, A. G. (1979). Estimating and approximating. In Sowder, J. (1992), Estimation and Number Sense. In D.A. Grouws (Ed.), Handbook of research in mathematics teaching and learning (pp.371–389). New York: Macmillan.</mixed-citation>
                    </ref>
                                    <ref id="ref60">
                        <label>60</label>
                        <mixed-citation publication-type="journal">Türk Dil Kurumu, (2024). Güncel Türkçe sözlük. 27 Kasım 2024 tarihinde http://www.tdk.gov.tr/ adresinden edinilmiştir.</mixed-citation>
                    </ref>
                                    <ref id="ref61">
                        <label>61</label>
                        <mixed-citation publication-type="journal">Umay, A. (2003). Matematiksel Muhakeme Yeteneği. Hacettepe Üniversitesi Eğitim Fakültesi Dergisi, 24(24).</mixed-citation>
                    </ref>
                                    <ref id="ref62">
                        <label>62</label>
                        <mixed-citation publication-type="journal">Van De Walle, J. A., Karp, K. S., &amp; Bay-Williams, J. M. (2016). İlkokul ve ortaokul matematiği: Gelişimsel yaklaşımla öğretim. (S. Durmuş, Çev.). Nobel Yayıncılık.</mixed-citation>
                    </ref>
                                    <ref id="ref63">
                        <label>63</label>
                        <mixed-citation publication-type="journal">Van Garderen, D., &amp; Montague, M. (2003). Visual‐Spatial Representation, Mathematical Problem Solving, and Students of Varying Abilities. Learning Disabilities Research &amp; Practice, 18(4), 246–254.</mixed-citation>
                    </ref>
                                    <ref id="ref64">
                        <label>64</label>
                        <mixed-citation publication-type="journal">Yin, R. K. (1994). Discovering The Future of The Case Study. Method in Evaluation Research. Evaluation practice, 15(3), 283–290</mixed-citation>
                    </ref>
                            </ref-list>
                    </back>
    </article>
