5Sutherland,D . &Dennick, R. (2002). Exploring Culture, Lan- guage and the Perception of the Nature of Science. International Journal of Science Education. 24(1) , pp. 1-25.
6Turmo. A. (2004). Scientific Literacy and Socio-Economic Back- ground Among 15-year-olds--a Nordic Perspective. Scandinavian Journal o~ Education Seandinavian Journal of Edueation Re- search,48(3) ,287-305.
82007 Scottish Survey of Achievement (SSA) -Science, Science Literacy and Core Skills-Head line Report, scottish survey o{ a- chievement--2007 science, science literacy and core skills - sup- porting evidence, http://www, scotland, gov. uk/Publications/ 2008/06/04092011/0,09-10-28.
9Ilker Kalender a& Giray Berberoglu a,An Assessment of Factors Related to Science Achievement of Turkish Students, Internation- al Journal of Science Education, 2009(31) :1379 - 1394.
10Hanushek, Eric A. (1986), 'The Economics of Schooling: Pro- duction and Efficiency in Public School', Journal of Economic Literature, 24(3), pp. 1141-1177.