7Cunningham, D J. (1992) Assessing Constructions and Constructing Assessments: ADialogue. In. T M Duffy &D H Jonassen(Eds. ), Constructivism and the Technology of Instruction: A Conversation (pp. 35 -44), Lawrence Erlbaum Associates, Inc.
8Driver, R( 1995 ). Constructivist Approaches to Science Teaching. InL P Steffe and J Gale( Eds), constroctivism in Education. Hillsdale, NJ:Lawence Edbaum. pp. 385-400.
9Solomon, J . Social influenceson the construction of pupils' understanding of science. Studies in Science Education. 1987,14, 63 - 82.
10Collette,A T , & Chiappetta, E C. (1994). Science instruction in the middle and science school (3nd, pp. 27 -47 ). Columbas U. S. A. : Merrill.
