Australian Curriculum, Assessment and Reporting Authority (ACARA). (2010).
Mathematics: Number and algebra. Retrieved from http://www.australiancurriculum.edu.au/Mathematics/RationaleBooker, G., Bond, D., Sparrow, L., & Swan, P. (2010).
Teaching primary mathematics (4th ed.). Frenchs Forest, New South Wales : Pearson Australia.Siemon, D., Beswick, K., Brady, K., Clark, J., Faragher, R., & Warren., E. (2011).
Teaching mathematics: foundations to middle years. VIC: Oxford University Press.