1. Warnick, B. R., & Silverman, S. K. (2011). A framework for professional ethics courses in teacher education. Journal of Teacher Education, 62(3), 273–285. https://doi.org/10.1177/0022487110398002
2. Kant, I. (1964). Groundwork of the metaphysic of morals. New York, NY: Harper & Row.
3. Musgrave, P. W. (1978). The moral curriculum: A sociological analysis. London, UK: Methuen.
4. Cowell, B. (1995). Developing a basis for moral thinking. International Review of Education, 41(1–2), 33–45.
5. Veugelers, W., & Vedder, P. (2003). Values in teaching. Teachers and Teaching: Theory and Practice, 9(4), 377–389. https://doi.org/10.1080/1354060032000097262
6. Freire, P. (1972). Pedagogy of the oppressed. Harmondsworth, UK: Penguin Books.
7. Jones, T., & Cuthrell, K. (2011). YouTube: Educational potentials and pitfalls. Computers in the Schools, 28(1), 75–85. https://doi.org/10.1080/07380569.2011.553149
8. Biesta, G. J. J., & Miedema, S. (2002). Instruction or pedagogy? The need for a transformative conception of education. Teaching and Teacher Education, 18(2), 173– 181. https://doi.org/10.1016/S0742-051X(01)00062-2
9. Author, O., & Lewis, T. E. (2012). Teaching with Pensive Images: Rethinking Curiosity in Paulo Freire’s Pedagogy of the. The Journal of Aesthetic Education Journal of Aesthetic Education, 46(1), 27–45. https://doi.org/10.5406/jaesteduc.46.1.0027
10. Giannakaki, M. S. S., & Batziakas, G. (2016). ‘This is a beautiful school.’ ‘This school is useless!!’ Explaining disengagement in a Greek vocational school through the examination of teacher ideologies. Research in Post-Compulsory Education, 21(4), 409–433. https://doi.org/10.1080/13596748.2016.1226585
11. Schleicher, A. (2012). Preparing teachers and developing school leaders for the 21st century: Lessons from around the world. OECD Education and Skills (Vol. 2012). https://doi.org/10.1787/9789264174559-en
12. Doerksen, R. (2016). Looking inward to 21 century pedagogy. McGill Journal of Education, 51(3), 1197. https://doi.org/10.7202/1039636ar
13. Smallhorn, M. (2017). The flipped classroom: A learning model to increase student engagement not academic achievement. Student Success, 8(2), 43–53.
14. Canţer, M. (2012). E-heutagogy for lifelong e-learning. Procedia Technology, 1, 129– 131. https://doi.org/10.1016/j.protcy.2012.02.025
15. Hargrove, R. A., & Nietfeld, J. L. (2015). The impact of metacognitive instruction on creative problem solving. Journal of Experimental Education, 83(3), 291–318.
16. Gibbs, J. C. (2010). Moral development & reality : beyond the theories of Kohlberg and Hoffman. Penguin academics. https://doi.org/10.4135/9781452233604
17. Rest, J., Narvaez, D., Bebeau, M. J., & Thoma, S. J. (1999). Postconventional Moral Thinking: A Neo-Kohlbergian Approach. Educational Psychology Review, 11(4), 291–324.
18. Colby, A., & Kohlberg, L. (2011). The Measurement of Moral Judgment. The measurement of moral judgment: Volume 1. Cambridge: Cambridge University Press. https://doi.org/10.1001/jama.1988.03410130176050
19. Kohlberg, L., Levine, C., & Hewer, A. (1983). Moral stages: A current formulation and a response to critics. Contributions to Human Development, 10, 174.
20. Abdul Rahman Md Aroff & Chang Lee Hoon. (1994). Pendidikan Moral. Selangor: Longman Malaysia.
21. Wilson, J. (1972). Practical methods of moral education. London, UK: Heinenmann.
22. Hine, G. (2013). The importance of action research in teacher education programs. Issues in Educational Research, 23(2), 151–163.
23. Oja Lisa, S. N. S. (1989). Collaborative action research: A developmental approach. Social research and educational studies series; 007. London, UK: Falmer Press.