บรรณานุกรม

1.http://www.thaigoodview.com/node/20418

2.http://www.karn.tv/index.php?option=com_content&view=article&id=1435

3.http://web.ku.ac.th/schoolnet/snet2/

4.http://kbusociety.eduzones.com/th/wpcontent/uploads/2011/01/1+1.jpg

5.http://kbusociety.eduzones.com/th/wpcontent/uploads/2010/06/05250_002.jpg

6.http://kanchit004.files.wordpress.com/2012/02/maths.png

7.http://kanchit004.files.wordpress.com/2012/06/teacher.jpg

8.http://kanchit004.files.wordpress.com/2010/04/3238578-thm.gif

9.http://www.sounddogs.com/previews/3894/mp3/799763_SOUNDDOGS__ma.mp3

10.http://www.krupongsak.net/