1. Shaw, S., Grimes, D., Bulman, J.: Educating slow learners: Are charter schools the last, best hope for their educational success? The Charter Schools Resource Journal 1(1) (2005)
2. Yusha’u, M.A.: Teaching slow learners in Mathematics: Yugal Remediation as alternative method. SER 13(2), 108–123 (2012)
3. Postnote. Teaching Children To Read. Parliamentary Office of Science and Technology, Number 345 (2009)
4. Sinar. 48,520 Murid Sekolah Rendah, Menengah Bermasalah Dalam Pembelajaran (2012)
5. Mayer, R.: Multimedia Learning, 2nd edn. Cambridge University Press, United States (2009)