3iHitch,G. J. The role of short-term working memory in mental arithmetic[J] .Cognitive Psychology, 1978,10:302-323.
4Siegler, R.S., Shrager, J.Strategy choices in addition and subtraction:How do children know what to do? In: C. Sophian.The origins of cognitive skills[J].Hillsdale,NJ.Erlbaum, 1984:229 -293.
5Ashcraff MH.Cognitive arithmetic:a review of data and theory[J].Cognition, 1992,44:75.
6Anderson,J.R.,Bothell,D.,Byrne,M. D.,Douglass,S.,Lebiere, C,&Qin,Y.L.An Integrated theory of the mind[J].Psychological Review,2004,111 (4): 1036-1060.
7Gluck, K. A. An ACT-R/PM model of algebra symbolization. In N. Taatgen & J. Aasman(Eds.) [J].Proceedings of the Third International Conference on Cognitive Modeling, 2000:134-141.