3Morrell.P.D.& Ledennan.N.G.1998.Students'attitudes toward school and classroom science:Are theydifferent phenomena? School Science and Mathematics.1998.98 (2):76-83.
4Stuesy.C.Path Analysis:A Model for the Development of Scientific Reasoninghg Abilities in Adolescents.Journal of Researeh in Science Teaching 1984,26(1):41-53
5Klahr,D.,& Dunbar,K,Dual search since during scientific reasoning.Cognitive Science.1988,12:1-48.
6Klahr,D.Exploring science:.The cognition and development of discovery processes.Cambridge:MA:MIT Press,2000.
7Keys,C.W.The Development of Scientific Reasoning Skills in Coniunotion with Collaborative Writing Assignments:An lnterprtive Study of Six Ninth-Grade Students Journal of Research in Science Teaching 1994.31(9):1003-1022.
8Schauble.L.,Glaser.R.Duschl.R.A.,& Schtdze,S.Students' understanding of the objectives and procedures of expermentafion in the science classroom.Journal of the Learning Sciences.1995.4:131-166.
9Siowiaczek.L.M..Klayman,J.,Sherman,S.J..Skov.R.B.information selection and use in hupothesis testing:What is a good question,and what is a good answer? Memory and Cognition,1992.20(4):392-405.
10Hatano,G..& Inagaki,K.Young children's naive theory of bioiogy.Cognition.1994,56:171-188.
