1. Adu, KO., Mathwasa, J&aDU & EO. 2020. Textbook Utilisation in Teaching Mathematics in Selected Mathematics in Selected Primary School Primary Schools in East London Education. Journal of Social Sciences and Humanities 17(2): 156–170.
2. Alkhateeb, M. 2018. Multiple Representations in 8th Grade Mathematics Textbook and the Extent to which Teachers Implement Them. International Electronic Journal of Mathematics Education 14(1): 137–145. doi:10.12973/iejme/3982
3. Alsawaie, O. N. 2012. Number Sense-Based Strategies Used By High-Achieving Sixth Grade Students Who Experienced Reform Textbooks. International Journal of Science and Mathematics Education 10(5): 1071–1097.
4. Asyrani Abdul Samat & Roslinda Rosli. 2020. Exploring Teachers’ Perceptions of Primary School Mathematics Textbook. International Journal of Academic Research in Progressive Education and Development 9(1286–300).
5. Atasoy, E. & Baki, A. 2020. Investigation of students’ cognitive learning in mathematics lessons supported with writing activities. Turkish Journal of Computer and Mathematics Education, hlm. Vol. 11. doi:10.16949/turkbilmat.703648
6. Azevedo, F. S. & Mann, M. J. 2019. The Mathematics in the Social Studies Textbook: A Critical Content Analysis and Implications for Students’ Reasoning. Creative Education 10(01): 1–25.
7. Behnke, Y. 2018. Textbook Effects and Efficacy. The Palgrave Handbook of Textbook Studies 383–398. doi:10.1057/978-1-137-53142-1
8. Bingolbali, E. 2020. An analysis of questions with multiple solution methods and multiple outcomes in mathematics textbooks. International Journal of Mathematical Education in Science and Technology 51(5): 669–687. doi:10.1080/0020739X.2019.1606949
9. Brookhart, S. M. 2018. Appropriate Criteria: Key to Effective Rubrics. Frontiers in Education 3(April). doi:10.3389/feduc.2018.00022
10. Cherry, K. 2019. Jean Piaget: Life and Theory of Cognitive Development. https://www.verywellmind.com/jean-piaget-biography-1896-1980-2795549 [19 December 2019].
11. Chunxia Qi, Zhang, X. & Huang, D. 2014. Research On Textbooks Used In China For Teaching Geometric Transformations In Secondary School: From The Perspective Of The Teachers’ Role. International Conference on Mathematics Textbook Research and Development 2014 (ICMT-2014) 29-31 July 2014, University of Southampton, UK, hlm. 91–103.
12. Dahlan, J. A. & Juandi, D. 2011. Analisis Representasi Matematik Siswa Sekolah Dasar Dalam Penyelesaian Masalah Matematika Kontekstual. Jurnal Pengajaran Matematika dan Ilmu Pengetahuan Alam 16(1): 128. doi:10.18269/jpmipa.v16i1.273
13. Divrik, R., Mentiş Taş, A. & Pilten, P. 2020. Teachers’ Views on the Problem-Solving & Problem-Posing Tasks in Primary School Mathematics Textbooks. Journal of Curriculum and Teaching 9(1): 73. doi:10.5430/jct.v9n1p73
14. Erbaş, A. K., Alacaci, C. & Bulut, M. 2012. A comparison of mathematics textbooks from Turkey, Singapore, and the United States of America. Educational Sciences: Theory and Practice 12(3): 2324–2330.
15. Fan, L., Zhu, Y. & Miao, Z. 2013. Textbook research in mathematics education: Development status and directions. ZDM - International Journal on Mathematics Education 45(5): 633–646.
16. Glasnovic Gracin, D. 2018. Requirements in mathematics textbooks: a five-dimensional analysis of textbook exercises and examples. International Journal of Mathematical Education in Science and Technology 49(7): 1003–1024.
17. Ismajli, H. & Neziri, M. 2019. Analyzing languages and communication textbooks in the context of achieving competence: Student as a critical thinker. International Journal of Instruction 12(4): 251–266. doi:10.29333/iji.2019.12416a
18. Kementerian Pelajaran Malaysia. 2012. Dasar Pendidikan Kebangsaan, hlm. Edisi Ke-3.
19. Kementerian Pelajaran Malaysia. 2013. Malaysia Education Blueprint 2013 - 2025. Education, hlm. Vol. 27, 1–268.
20. Kuldas, S., Sinnakaudan, S., Hashim, S. & Ghazali, M. 2017. Calling for the development of children’s number sense in primary schools in Malaysia. Education 3-13 45(5): 586–598.
21. McLeod, S. 2018. Jean Piaget’s Theory of Cognitive Development. Simply Psychology (1936): 1–9. Retrieved from https://www.simplypsychology.org/simplypsychology.org-Jean-Piaget.pdf
22. Nagnedrarao, B. 2017. Mathematics Teachers ’ Perception Using Textbook To Promote 29(4): 965–970.
23. Noraini Idris. 2013. Penyelidikan Dalam Pendidikan by Noraini Idris, hlm. Kedua.
24. Pohl, M. & Schacht, F. 2019. How Do Students Use Digital Textbooks? Proceedings of the Third International Conference on Mathematics Textbook Research and Development (pp. 39–44). Paderborn: Universitätsbibliothek Paderborn, hlm. 39–44.
25. Randahl, M. 2016. The mathematics textbook at tertiary level as curriculum material – exploring the teacher’s decision-making process. International Journal of Mathematical Education in Science and Technology 47(6): 897–916. doi:10.1080/0020739X.2015.1133853
26. Rezat, S. 2013. The textbook-in-use: Students’ utilization schemes of mathematics textbooks related to self-regulated practicing. ZDM - Mathematics Education 45(5): 659–670.
27. Rezat, S., Fan, L., Hattermann, M., Schumacher, J. & Wuschke, H. 2019. 50 Years of realistic mathematics education ideas and their implementation in textbooks- leaarning facilitators for addition and subtraction. Proceedings of the Third International Conference on Mathematics Textbook Research and Development., hlm. 341–347. doi:10.17619/UNIPB/1-768
28. Schubring, G. & Fan, L. 2018. Recent advances in mathematics textbook research and development: an overview. ZDM - Mathematics Education 50(5): 765–771.
29. Shield, M. & Dole, S. 2013. Assessing the potential of mathematics textbooks to promote deep learning 183–199.
30. Sievert, H., van den Ham, A. K., Niedermeyer, I. & Heinze, A. 2019. Effects of mathematics textbooks on the development of primary school children’s adaptive expertise in arithmetic. Learning and Individual Differences 74(January): 101716. doi:10.1016/j.lindif.2019.02.006
31. Singh, P., Yusoff, N. M. & Hoon, T. S. 2020. Content analysis of primary school mathematics textbooks and its relationship with pupils achievement. Asian Journal of University Education 16(2): 15–25. doi:10.24191/AJUE.V16I2.10286
32. Slavin, R. E., Lake, C. & Groff, C. 2009. Effective programs in middle and high school mathematics: A best-evidence synthesis. Review of Educational Research 79(2): 839–911. doi:10.3102/0034654308330968
33. Sumarmo, U., Suharyati, S. & Maya, R. 2019. the Role of Model-Eliciting Activities on Student’S Mathematical Reasoning and Self Regulated Learning. Edusentris 5(2): 61. doi:10.17509/edusentris.v5i2.294
34. Sun, X. H. 2019. Bridging whole numbers and fractions: problem variations in Chinese mathematics textbook examples. ZDM - Mathematics Education 51(1): 109–123. doi:10.1007/s11858-018-01013-9
35. Tan, K. J., Ismail, Z. & Abidin, M. 2018. A comparative analysis on cognitive domain for the Malaysian primary four textbook series. Eurasia Journal of Mathematics, Science and Technology Education 14(4): 1273–1286.
36. Thompson, D. R. & Senk, S. L. 2014. Lessons Learned From Three Decades Of Textbook Research. International Conference on Mathematics Textbook Research and Development 2014 (ICMT-2014) 29-31 July 2014, University of Southampton, UK, hlm. 49–56.
37. van den Ham, A. K. & Heinze, A. 2018. Does the textbook matter? Longitudinal effects of textbook choice on primary school students’ achievement in mathematics. Studies in Educational Evaluation 59(July): 133–140. doi:10.1016/j.stueduc.2018.07.005
38. Wiliam, D. 2013. Assessment : The Bridge between. Voices from the Middle 21(2): 40.
39. Zhang, F. & Zhu, X. 2014. Mathematics Textbook Research And Development For The Promotion Of Independent Learning And Inquiry Learning. International Conference on Mathematics Textbook Research and Development 2014 (ICMT-2014) 29-31 July 2014, University of Southampton, UK, hlm. 511–516.
40. Zhu, Y. & Fan, L. 2006. Focus on the representation of problem types in intended curriculum: A comparison of selected mathematics textbooks from Mainland China and the United States. International Journal of Science and Mathematics Education 4(4): 609–626.