NUMBER CONCEPTS OF PRESCHOOL-CHILDREN

[1] THE DEVELOPMENT OF COUNTING STRATEGIES FOR SINGLE-DIGIT ADDITION [J]. JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION, 1987, 18 (02) : 141 - 157

[2] BAROODY AJ, 1983, CHILD STUDY J, V13, P95

[3] Hughes M., 1986, CHILDREN NUMBER DIFF

[4] STARKEY PA, 1982, ADDITION SUBTRACTION, P28

[5] LEARNING MATHEMATICS [J]. BRITISH JOURNAL OF DEVELOPMENTAL PSYCHOLOGY, 1987, 5 : 155 - 167

[1] THE DEVELOPMENT OF COUNTING STRATEGIES FOR SINGLE-DIGIT ADDITION [J]. JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION, 1987, 18 (02) : 141 - 157

[2] BAROODY AJ, 1983, CHILD STUDY J, V13, P95

[3] Hughes M., 1986, CHILDREN NUMBER DIFF

[4] STARKEY PA, 1982, ADDITION SUBTRACTION, P28

[5] LEARNING MATHEMATICS [J]. BRITISH JOURNAL OF DEVELOPMENTAL PSYCHOLOGY, 1987, 5 : 155 - 167