1. Piaget and beyond: Toward a developmentally based theory and technology of instruction;Case,1978
2. The process of stage transition: A neo-Piagetian view;Case,1984
3. Intellectual development;Case,1985
4. The development of children's understanding of proportions;Chapman;Child Development,1975
5. Understanding and solving probability problems: A developmental study;Dean;Journal of Experimental Child Psychology,1986