Al-Rabaani, A. (2014). The acquisition of science process skills by Omani's pre-service social studies' teachers. European Journal of Educational Studies, 6(1), 13-19. Retrieved from https://www.researchgate.net/publication/343224121_THE_ACQUISITION_OF_SCIENCE_PROCESS_SKILLS_BY_OMANI%27S_PRE-SERVICE_SOCIAL_STUDIES%27_TEACHERS

Al-Qahtani, S. A. (1995). Teaching thinking skills in the social studies curriculum of Saudi Arabian secondary schools. International Journal of Educational Development, 15(2), 155-163. https://doi.org/10.1016/0738-0593(94)E0014-F

Ary, D., Jacobs, L. C., Irvine, C. K. S., & Walker, D. A. (2013). Introduction to research in education (9th edition). Wadsworth, Cangage Learning.

Ata, B. (2009). Sosyal bilgiler öğretim programı [Social studies curriculum]. In C. Öztürk (Ed.), Sosyal bilgiler öğretimi: Demokratik vatandaşlık eğitimi [Social studies teaching: Education for democratic citizenship] (pp. 33-47). Ankara: Pegem.

Aydemir, M. (2017). Examination of middle school social sciences textbooks in terms of skills included in the middle school social sciences course curriculum. International Journal of Contemporary Educational Studies, 3(2), 1-17. Retrieved from https://dergipark.org.tr/tr/pub/intjces/issue/33427/372456

Aydemir, M., & Adamaz, K. (2017). An analysis of achievements and activities included in the secondary school social sciences curriculum from the perspective of common and course-specific skills. International Journal of Field Education, 3(2), 37-59. https://doi.org/10.32570/ijofe.342445

Aydın, M., & Çelik, T. (2013). The prospective teachers' opinions relating reflective thinking skills.  Pamukkale University Journal of Education, 34(34), 169-131. https://doi.org/10.9779/PUJE611

Aydın, A., Sarıer, Y., & Uysal, Ş. (2014). Evaluation of students' academic achievement in terms of PISA Results. Elementary Education Online, 13(3), 1065-1074. Retrieved from https://ilkogretim-online.org/fulltext/218-1596953927.pdf?1618700581

Beyer, B. K. (2008). How to teach thinking skills in social studies and history. The Social Studies, 99(5), 196-201. https://doi.org/10.3200/TSSS.99.5.196-201

Binkley, M., Erstad, O., Herman, J., Raizen, S., Ripley, M., Miller-Ricci, M., & Rumble, M. (2012). Defining twenty-first century skills. In P. Griffin, B., & McGaw, E. Care (Eds.), Assessment and teaching of 21st century skills (pp. 17-66). Netherlands: Springer. Retrieved from https://link.springer.com/chapter/10.1007/978-94-007-2324-5_2

British Council [BC]. (2016). Unlocking a World of potential: Core skills for learning, work and society. London: British Council. Retrieved from https://connecting-classrooms.britishcouncil.org/sites/default/files/core_skills_brochure._version_3._web.pdf

Brugar, K. A., & Whitlock, A. M. (2018). Social studies skills or something else? An analysis of how the "essential social studies skills and strategies" reflects social studies instruction. The Clearing House: A Journal of Educational Strategies, 91(3), 111-117, https://doi.org/10.1080/00098655.2017.1418129

Bulut, B., & Taşkıran, C. (2014). Examining the achievements in the sixth grade social studies program in terms of mental skills. The International Journal of Turkish Education Sciences, 2(2), 1-13.

Çelik, O. (2014). Identification of the level of enterprising, knowledge and ability of the students studying primary school teaching and social studies teaching at faculty of education. (Unpublished Master's Thesis). Adnan Menderes University, Aydın. Retrieved from https://tez.yok.gov.tr/UlusalTezMerkezi/  Access Date: 08/09/2021

Çelikkaya, T. (2011). Transmission level of skills in the social studies curriculum: Teachers' opinions. Kastamonu Education Journal, 19(3), 969-990. Retrieved from https://dergipark.org.tr/tr/pub/kefdergi/issue/49049/625738 Access Date: 03.05.2022

Çelikkaya, T., Yıldırım, T., & Kürümlüoğlu, M. (2019). Ability hierarchies, reasons and recommendations of students and social studies teachers regarding ability in social studies curriculum. MANAS Journal of Social Studies, 8(1), 111-132. https://doi.org/10.33206/mjss.482103

Europen Union [EU] (2006). Key competences for lifelong learning. Official Journal of the European Union, L 394. The European Parliament and the Council of the European Union. Retrieved from https://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2006:394:0010:0018:en:PDF  Access Date: 03.05.2022

Evans, M. B., & Clark, S. K. (2015). Finding a place for CCSS literacy skills in the middle school social studies curriculum. The Clearing House: A Journal of Educational Strategies, Issues and Ideas, 88(1), 1-8. https://doi.org/10.1080/00098655.2014.959460

Farisi, M. I. (2016). Developing the 21st-century social studies skills through technology integration. Turkish Online Journal of Distance Education, 17(1), 16-30. https://doi.org/10.17718/tojde.47374

Fischer, C., Bol, L., & Pribesh, S. (2011). An investigation of higher-order thinking skills in smaller learning community social studies classrooms. American Secondary Education, 39(2), 5-26. Retrieved from https://www.jstor.org/stable/23100399?seq=1  Access Date: 03.05.2022

Frey, C. B., & Osborne, M. A. (2013). The future of employment: how susceptible are jobs to computerisation? Retrieved from http://www.oxfordmartin.ox.ac.uk/downloads/academic/The_Future_of_Employment.pdf  Access Date: 03.05.2022

Gelen, İ. (2002). The evaluation of fourth grade elementary school teachers' competences about teaching thinking skills in social studies course. Journal of Çukurova University Institute of Social Sciences, 10(10), 100-119. Retrieved from https://dergipark.org.tr/tr/pub/cusosbil/issue/4365/59709  Access Date: 03.05.2022

Gelen, İ. (2011). Determination of the level of acquisition of some common skills concerning thinking in the curriculum of social studies. Ondokuz Mayıs University Journal of Faculty of Education, 30(1), 83-106. Retrieved from https://dergipark.org.tr/tr/pub/omuefd/issue/20250/214854  Access Date: 03.05.2022

Gut, D. M. (2011). Integrating 21st century skills into the curriculum. In G. Wan & D.M. Gut (Eds.), Bringing schools into the 21st century (pp. 137-157). Springer, Dordrecht.

Hayırsever, F., & Kısakürek, M. A. (2014). Evaluation of social studies textbook in terms of the aimed skills to be acquired by students according to the primary school curriculum. International Journal of Curriculum and Instructional Studies, 4(8), 23-42. Retrieved from http://ijocis.com/index.php/ijocis/article/view/19/17  Access Date: 03.04.2022

Higher Education Council [HEC], (2007). Eğitim fakültesi öğretmen yetiştirme lisans programları [Faculty of Education teacher training undergraduate programs] Retrieved from https://www.yok.gov.tr/Documents/Yayinlar/Yayinlarimiz/egitim-fakultesi-ogretmen-yetistirme-lisans-programlari.pdf

Higher Education Council [HEC], (2018). Sosyal bilgiler öğretmenliği lisans programı [Social studies teaching undergraduate program] Retrieved from https://www.yok.gov.tr/kurumsal/idari-birimler/egitim-ogretim-dairesi/yeniogretmen-yetistirme-lisans-programlari Access Date: 03.04.2022

Gökkurt, B., & Soylu, Y. (2013). Levels of students' use of semantic knowledge in problem solving process. Kastamonu Educational Journal, 21(2), 469-488. Retrieved from https://search.trdizin.gov.tr/yayin/detay/147827  Access Date: 03.04.2022

Güler, H. K. (2013). Analysis of Turkish students' difficulties encountered in PISA. Journal of Uludag University Faculty of Education, 26(2), 501-522. Retrieved from https://dergipark.org.tr/tr/pub/uefad/issue/16698/173591 Access Date: 03.04.2022

Jacobson, R. (1998). Teachers improving learning using metacognition with self-monitoring learning strategies. Education, 118(4), 579-591. Retrieved from https://eds.p.ebscohost.com/eds/pdfviewer/pdfviewer?vid=0&sid=33e14cff-5556-42a8-a15e-90c1d1497a63%40redis Access Date: 03.04.2022

Kan, A. Ü. (2006). An evaluation of students' opinions on the effects of fifth grade social studies and Turkish language curriculum in gaining basic skills offered in the new primary school curriculum (Case of Diyarbakır city). (Unpublished Master's Thesis). Fırat University, Elazığ. Retrieved from https://tez.yok.gov.tr/UlusalTezMerkezi/ Access Date: 06/09/2021

Karademir, E., Sarikahya, E., & Altunsoy, K. (2017). The perceptions of the science teachers toward to the concept of skill: A phenomenological study. Eskişehir Osmangazi University Journal of Social Sciences, 18(1), 53-71. https://doi.org/10.17494/ogusbd.330740 Access Date: 03.04.2022

Karnes, M., Collins, D., Maheady, L., Harper, G. F., & Mallette, B. (1997). Using cooperative learning strategies to improve literacy skills in social studies. Reading & Writing Quarterly: Overcoming Learning Difficulties, 13(1), 37-51. https://doi.org/10.1080/1057356970130104

Merriam, S. B., & Tisdell, E. J. (2016). Qualitative research: A guide to design and implementation (4th Edition). San Francisco: Jossey-Bass.

Miles, M. B., & Huberman, A. M. (1994). Qualitative data analysis. London: Sage Publication.

Ministry of National Education. (2005). İlköğretim sosyal bilgiler dersi 4-5. sınıflar öğretim programı ve kılavuzu [Elementary school social studies lesson 4-5th classes curriculum and guide]. Ankara: Ministry of National Education.

Ministry of National Education [MoNE], (2018). Sosyal bilgiler dersi öğretim programı (İlkokul ve ortaokul 4, 5, 6 ve 7. sınıflar). [Social studies curriculum (Primary and secondary school 4th, 5th, 6th and 7th grades)]. Ankara. Retrieved from https://mufredat.meb.gov.tr/ProgramDetay.aspx?PID=354 Access Date: 03.04.2022

Mutluer, C. (2013). The views of social studies teachers about the skills contained in social studies (The example of İzmir Menemen). Turkish Studies, 8(7), 355-362. http://dx.doi.org/10.7827/TurkishStudies.5236

Organisation for Economic Co-operation and Development, [OECD]. (2005). The definition and selection of key competencies. Paris: OECD. Retrieved from http://www.deseco.admin.ch/bfs/deseco/en/index/02.html Access Date: 03.04.2022

Organisation for Economic Co-operation and Development, [OECD]. (2018). The future of education and skills: Education 2030. Retrieved from https://www.oecd.org/education/2030/E2030%20Position%20Paper%20(05.04.2018).pdf Access Date: 03.04.2022

Öztürk, M., & Mutlu, N. (2017). How do we teach the skills and values in social sciences and history courses? Sakarya University Journal of Education, 7(3), 552-563. https://doi.org/10.19126/suje.328256

Öztürk T., & Öğreten A. (2017). Teachers' opinions about the sufficiency of social studies textbooks to gain skills of the 2005-year's social studies curriculum. Anadolu Journal of Educational Sciences International, 7(2), 234-259. https://doi.org/10.18039/ajesi.333727

Partnership for 21st Century Skills, [P21], (2009). P21 Framework definitions. Retrieved from https://files.eric.ed.gov/fulltext/ED519462.pdf Access Date: 03.04.2022

Paquette, K. R., & Kaufman, C. C. (2008). Merging civic and literacy skills. The Social Studies, 99(4), 187-192. https://doi.org/10.3200/TSSS.99.4.187-192

Patton, M. Q. (2014). Nitel araştırma ve değerlendirme yöntemleri [Qualitative research and evaluation methods]. M. Bütün ve S.B. Demir (Çev. Eds.). Ankara: Pegem.

Sahin, C. (2010). An evaluation of teachers' perceptions of teaching social skills to fifth grade students within the scope of social studies lessons. International Journal of Progressive Education, 6(1), 28-46. Retrieved from https://ijpe.inased.org/makale_indir/2560 Access Date: 03.04.2022

Turkish Language Association [TLA], (2021). Beceri [Skill]. Retrieved from https://sozluk.gov.tr/ Access Date: 03.04.2022

VanSickle, R. L., & Hoge, J. D. (1991). Higher cognitive thinking skills in social studies: concepts and critiques. Theory & Research in Social Education, 19(2), 152-172. https://doi.org/10.1080/00933104.1991.10505634

World Economic Forum, [WEF] (2016). The future of jobs: employment, skills and workforce strategy for the fourth industrial revolution. Geneva, Switzerland. Retrieved from https://www.voced.edu.au/content/ngv:71706# Access Date: 03.04.2022

World Health Organization [WHO], (2020). Life skills education school handbook: prevention of noncommunicable diseases: approaches for schools. Retrieved from https://apps.who.int/iris/handle/10665/331947  Access Date: 03.04.2022

Yılar, M. B. (2020). Sosyal bilgilerde iş birliği becerisi [Collaboration skills in social studies]. In T. Çelikkaya & H. Yakar (Eds.), Konu ve beceri temelli sosyal bilgiler öğretimi-II [In Subject and skill-based social studies teaching-II], (pp. 301-345), Ankara: Pegem.

Yılar, M. B., & Tomal, N. (2018).F Sosyal bilgiler dersi ve yenilenen ders öğretim programı [Social studies course and renewed curriculum]. In A. Uzunöz & V. Aktepe (Eds.), Özel öğretim yöntemleri-cilt-2 [In Special teaching methods-vol.-2]. (pp. 1-42). Ankara: Pegem.

Yıldırım, A., & Şimşek, H. (2016). Sosyal bilimlerde nitel araştırma yöntemleri [Qualitative research methods in the social sciences]. Ankara: Seçkin.