1. The relationships among the development of counting, number conservation and basic arithmetic abilities;Baroody,1979
2. Are discovering commutativity and more economical addition strategies related?;Barrody;Problem Solving,1982
3. The development of children's informal addition;Baroody,1983
4. Baroody, A. J., & Gannon, K. E. (in press). The development of the commutativity principle and economical addition strategies in young children. Cognition and Instruction.
5. Identity and equivalence conservation at two age levels;Elkind;Developmental Psychology,1972