References   Ashlock, R.B. (1976) Error Patterns in Computation: A Semi Programmed Approach , Bell and Howell Co., Ohio.   Gardiner, T. (1996) Mathematical Challenge , Cambridge University Press, Cambridge.   Hope, J.A., Leutzinger, l., Reys, B.J. and Reys, R.E. (1988) Mental Math in the Primary Grades , Dale Seymour Publication, Palo Alto.   Hope, J.A., Reys, B.J. and Reys, R.E. (1988) Mental Math in Junior High , Dale Seymour Publication, Palo Alto.   Hope, J.A., Reys, B.J. and Reys, R.E. (1987) Mental Math in the Middle Grades , Dale Seymour Publication, Palo Alto.   Labinowicz, E. (1985) Learning From Children: New Beginnings For Teaching Numerical Thinking , Addison-Wesley Publishing Company, California.   Mulligan, J. and Mitchelmore, M. ed.s (1996) Children's Number Learning , The Australian Association of Mathematics teachers Inc., Adelaide.   Schoen, H.L. and Zweng, M.J. ed.s (1986) Estimation and Mental Computation , National Council of Teachers of Mathematics, Virginia.   Willis, S. ed. (1990) Being Numerate: What counts? , ACER, Melbourne.   Back to Main Menu