1. Saxe, G. 1979. Numerals as body parts: A developmental analysis of numeration among a village population in Papua, New Guinea. Paper presented at the meeting of the Society for Research in Child Development. 1979, San Francisco.
2. Posner, J. and Ginsburg, H. 1978. Mathematical competence in two West African societies. Paper presented at the meeting of the American Anthropological Association. 1978, Los Angeles.
3. Ginsburg, H. 1979. Mathematical thinking in innercity black preschool children. Paper presented at the meeting of the Society for Research in Child Development. 1979, San Francisco.
4. Numerical Reasoning in Young Children: The Ordering Principle