Submitted on: 11 August 2005.
Revised on: 25 September 2005.
Accepted on: 06 November 2005.
___________________BRITISH JOURNAL OF EDUCATIONAL TECHNOLOGY
Submitted on: 22 September 2013.
Revised on: 18 December 2013.
Accepted on: 31 January 2014.
___________________BRITISH JOURNAL OF EDUCATIONAL TECHNOLOGY
http://reply.papertrans.cn/1/43/4206/4206-13.png
http://reply.papertrans.cn/1/43/4206/4206-14.png
Submitted on: 21 January 2017.
Revised on: 06 March 2017.
Accepted on: 21 April 2017.
___________________BRITISH JOURNAL OF EDUCATIONAL TECHNOLOGY
Submitted on: 16 April 2005.
Revised on: 07 August 2005.
Accepted on: 25 September 2005.
___________________BRITISH JOURNAL OF EDUCATIONAL TECHNOLOGY
Submitted on: 01 January 2015.
Revised on: 11 March 2015.
Accepted on: 30 April 2015.
___________________BRITISH JOURNAL OF EDUCATIONAL TECHNOLOGY
Submitted on: 30 April 2006.
Revised on: 18 June 2006.
Accepted on: 13 August 2006.
___________________BRITISH JOURNAL OF EDUCATIONAL TECHNOLOGY
http://reply.papertrans.cn/1/43/4206/4206-19.png
http://reply.papertrans.cn/1/43/4206/4206-20.png