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References

  • Karplus, R. (1977). Science teaching and the development of reasoning. Journal of Research in Science Teaching, 14, 169175.
  • Robinson, F., Ross, J., & White, F. (1985). Curriculum development for effective instruction. Toronto: OISE Press.
  • Ross, J. (1988). Controlling variables: A meta-analysis of training studies. Review of Education Research, 58, 405437.
  • Toh, K., & Woolnough, B. (1993). Middle school students' achievement in laboratory investigations: Explicit versus tacit knowledge. Journal of Research in Science Teaching, 30, 445457.