Submitted on: 23 September 2002.
Revised on: 19 December 2002.
Accepted on: 13 February 2003.
___________________Journal of Science Teacher Education
Submitted on: 28 March 2012.
Revised on: 24 April 2012.
Accepted on: 25 May 2012.
___________________Journal of Science Teacher Education
Submitted on: 29 March 2011.
Revised on: 30 April 2011.
Accepted on: 08 June 2011.
___________________Journal of Science Teacher Education
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Submitted on: 01 April 2006.
Revised on: 30 April 2006.
Accepted on: 19 June 2006.
___________________Journal of Science Teacher Education
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Submitted on: 02 February 2004.
Revised on: 29 March 2004.
Accepted on: 22 May 2004.
___________________Journal of Science Teacher Education
Submitted on: 15 September 2016.
Revised on: 28 November 2016.
Accepted on: 14 January 2017.
___________________Journal of Science Teacher Education
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