1. ARZI, H. (1985). The long-term kinetics of conceptual development: the case of +=− and contextual differentiation.Research in Science Education, 15, 112–121.
2. COSGROVE, M. & OSBORNE, R. (1983).Electric Current — Developing the Concept: Teacher's Guide to Electric Circuits, Science Education Research Unit, University of Waikato-Hamilton Teachers College, Hamilton, New Zealand.
3. COSGROVE, M. & OSBORNE, R. (1985). A teaching sequence on electric current. Chapter 10 in R. Osborne & P. Freyberg (eds.).Learning in Science: The Implications of Children's Science, Auckland, Heinemann, 112–123.
4. DRIVER, R. & ERICKSON, G. (1983). Theories-in-action: some theoretical and empirical issues in the study of students' conceptual frameworks in science,Studies in Science Education, 10, 37–60.
5. Working Paper;C.F. Gauld,1985