Biggs, N. (2016). Quite right: The story of mathematics, measurement, and money. Oxford University Press.
Boaler, J. (2015). Mathematical mindsets: Unleashing students' potential through creative math, inspiring messages and innovative teaching. John Wiley & Sons.
Chin, K. E. (2013). Making sense of mathematics: supportive and problematic conceptions with special reference to trigonometry (Unpublished doctoral thesis). Retrieved from http://wrap.warwick.ac.uk/58403/
Chin, K. E., Jiew, F. F., & Taliban, E. (2019). Conceptions in making sense of multiplication. EURASIA Journal of Mathematics, Science and Technology Education, 15(12). https://doi.org/10.29333/ejmste/105480
Chinn, S., & Ashcroft, R. E. (2017). Mathematics for dyslexics and Dyscalculics: A teaching handbook. John Wiley & Sons.
Clarke, V., & Braun, V. (2013). Teaching thematic analysis: Overcoming challenges and developing strategies for effective learning. The Psychologists, 62 (2), 120–123. http://eprints.uwe.ac.uk/21155/3/Teaching%20thematic%20analysis%20Research%20Repository%20version.pdf
Clements, D. H., & Sarama, J. (2014). Learning and teaching early math: The learning trajectories approach. Routledge.
Cotton, T. (2021). Understanding and teaching primary mathematics (4th ed.). Routledge.
Knaus, M., & Featherstone, S. (2015). Maths is all around you. Bloomsbury Publishing.
Kennison, S. M. (2018). Psychology of language: Theory and applications. Bloomsbury Publishing. Lucangeli, D. (2020). Understanding dyscalculia: A guide to symptoms, management and treatment. Routledge.
Merriam, S. B., & Tisdell, E. J. (2016). Qualitative research: A guide to design and implementation (4th ed.). Jossey-Bass.
Minetola, J. R., Ziegenfuss, R. G., & Chrisman, J. K. (2013). Teaching young children mathematics.
MOE (2020). Lanjutan Tempoh Penutupan Institusi Pendidikan Di Seluruh Negeri Sabah. https://www.moe.gov.my/muat-turun/kenyataan-media/km2020/3798-km-lanjutan-tutup-ip-sabah/file
MOH (2020). SOP AM PKPD NEGERI SABAH. http://covid-19.moh.gov.my/faqsop/sop-perintah-kawalan-pergerakan-pkp/02SOP_AM_PKPD_NEGERI_SABAH_kemaskini_16112020.pdf
National Council of Teachers of Mathematics (2009). Focus in High School Mathematics: Reasoning and Sense Making. Retrieved from https://www.nctm.org/Standards-and-Positions/Focus-in-High-School-Mathematics/
O’Leary, Z. (2014). The essential guide to doing your research project (2nd ed.). SAGE Publications
Piaget, J. (1952). The origin of intelligence in the child. Routledge. https://doi.org/10.1037/11494-000
Pólya, G. (1945). How to solve it: A new aspect of mathematical method.
Reys, R., Lindquist, M., Lambdin, D. V., Smith, N. L., Rogers, A., Cooke, A., Bennett, S., Ewing, B., & West, J. (2019). Helping children learn mathematics (3rd ed.). John Wiley & Sons.
Rivera, F. (2013). Teaching and Learning Patterns in School Mathematics Psychological and Pedagogical Considerations. Springer Netherlands.
Skemp, R. R. (2002). Mathematics in the primary school. Psychology Press.
Sousa, D. A. (2014). How the brain learns mathematics (2nd ed.). Corwin Press.
Tall, D. (2013). How humans learn to think mathematically: Exploring the three worlds of mathematics. Cambridge University Press.
Taylor, H., & Harris, A. (2014). Learning and teaching mathematics 0-8. Sage Publications. Thiel, O., Severina, E., & Perry, B. (2020). Mathematics in Early Childhood:Research, Reflexive Practice and Innovative Pedagogy. Routledge.
Thurston, W. P. (1990). Mathematical Education, Notices of the American Mathematical Society, 37, 7, 844‐850.
Tucker, K. (2010). Mathematics through play in the early years. SAGE.
Yin, R. K. (2018). Case study research: design and methods (6th ed.). Sage Publication