Submitted on: 31 August 2002.
Revised on: 09 October 2002.
Accepted on: 27 October 2002.
___________________Journal of Computers in Education
Submitted on: 03 August 2010.
Revised on: 15 September 2010.
Accepted on: 24 October 2010.
___________________Journal of Computers in Education
Submitted on: 02 July 2004.
Revised on: 20 August 2004.
Accepted on: 18 September 2004.
___________________Journal of Computers in Education
Submitted on: 20 August 1998.
Revised on: 03 November 1998.
Accepted on: 23 November 1998.
___________________Journal of Computers in Education
Submitted on: 14 October 2015.
Revised on: 12 December 2015.
Accepted on: 17 January 2016.
___________________Journal of Computers in Education
http://reply.papertrans.cn/2/162/16103/16103-26.png
Submitted on: 02 July 2009.
Revised on: 12 August 2009.
Accepted on: 20 September 2009.
___________________Journal of Computers in Education
Submitted on: 12 July 2000.
Revised on: 08 November 2000.
Accepted on: 05 December 2000.
___________________Journal of Computers in Education
Submitted on: 18 January 1998.
Revised on: 10 May 1998.
Accepted on: 08 June 1998.
___________________Journal of Computers in Education
Submitted on: 07 February 2006.
Revised on: 05 March 2006.
Accepted on: 19 March 2006.
___________________Journal of Computers in Education