4Piaget J.The principles of genetic epistemology.London:Routledge & Kegan Paul Ltd.,1972
5Anderson J R.Acquisition of cognitive skill.Psychological Review,1982,89(4):369 ～406.
6Briars D,Siegler R S.A featural analysis of preschoolers'counting knowledge.Developmental Psychology,1984,20(4):607 ～618
7Frye D,Braisby N,Love J,Maroudas,C,Nicholls J.Young children's understanding of counting and cardinality.Child Development,1989,60(6):1158～1171
8Hiebert J,Wearne D.Instruction,understanding and skill in multidigit addition and instruction.Cognition and Instruction,1996,14(3):251 ～283
9Siegler R S,Stern E.Conscious and unconscious strategy discoveries:A microgenetic analysis.Journal of Experimental Psychology:General,1998,127(4):377 ～397
10Karmiloff-Smith A.Micro- and macro-developmental changes in language acquisition and other representational systems.Cognitive Science,1979,3(2):91 ～118
