http://gwydir.demon.co.uk/jo/elect/index.htm
http://www.engineeringinteract.org/resources/siliconspies/flash/concepts/electricity.htm
http://www.bbc.co.uk/schools/scienceclips/ages/10_11/changing_circuits_fs.shtml
http://www.andythelwell.com/blobz/
http://www.engineeringinteract.org/resources/siliconspies/siliconspieslink.htm
http://familyfun.go.com/parenting/learn/activities/feature/famf119weirdsci/famf119weirdsci6.html
15 November 2008
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