References

• Bobis, J., Mulligan, J., and Lowrie, T. (2008). Ch 9: Promoting Number Sense: Beyond Computation. In J. Bobis, J. Mulligan and T. Lowrie (Eds), Mathematics for children : challenging children to think mathematically (p. 215-242). Frenchs Forest, NSW: Pearson Education Australia.

• Bobis, Janette. (1996). Ch 1 : Visualisation and the Development of Number Sense with Kindergarten Children. In Mulligan, Joanne and Mitchelmore, Michael (Eds), Children's number learning (p. 17-33). Adelaide, SA: Australian Association of Mathematics Teachers. http://www.designedinstruction.com/prekorner/early-childhood-counting.html.

• Clements, D. & Sarama, J. (2000). The earliest geometry. Teaching children mathematics, 7(October), p. 82-86.
• Gelman, R. and Gallistel, C. (1992). Preverbal and verbal counting and computation.Cognition, 44(1), p. 43-74.